1 # This file is in the public domain, so clarified as of
2 # 2009-05-17 by Arthur David Olson.
4 # This file is by no means authoritative; if you think you know better,
5 # go ahead and edit the file (and please send any changes to
6 # tz@iana.org for general use in the future). For more, please see
7 # the file CONTRIBUTING in the tz distribution.
9 # From Paul Eggert (2014-10-31):
11 # Unless otherwise specified, the source for data through 1990 is:
12 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
13 # San Diego: ACS Publications, Inc. (2003).
14 # Unfortunately this book contains many errors and cites no sources.
16 # Gwillim Law writes that a good source
17 # for recent time zone data is the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990. Except where otherwise noted,
21 # IATA SSIM is the source for entries after 1990.
23 # A reliable and entertaining source about time zones is
24 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
26 # Except where otherwise noted, Shanks & Pottenger is the source for
27 # entries through 1991, and IATA SSIM is the source for entries afterwards.
29 # Other sources occasionally used include:
31 # Edward W. Whitman, World Time Differences,
32 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
33 # which I found in the UCLA library.
35 # William Willett, The Waste of Daylight, 19th edition
36 # <http://cs.ucla.edu/~eggert/The-Waste-of-Daylight-19th.pdf>
39 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
40 # <http://www.jstor.org/stable/1774359>. He writes:
41 # "It is requested that corrections and additions to these tables
42 # may be sent to Mr. John Milne, Royal Geographical Society,
43 # Savile Row, London." Nowadays please email them to tz@iana.org.
45 # Byalokoz EL. New Counting of Time in Russia since July 1, 1919.
46 # This Russian-language source was consulted by Vladimir Karpinsky; see
47 # http://mm.icann.org/pipermail/tz/2014-August/021320.html
48 # The full Russian citation is:
49 # Бялокоз, Евгений Людвигович. Новый счет времени в течении суток
50 # введенный декретом Совета народных комиссаров для всей России с 1-го
51 # июля 1919 г. / Изд. 2-е Междуведомственной комиссии. - Петроград:
52 # Десятая гос. тип., 1919.
53 # http://resolver.gpntb.ru/purl?docushare/dsweb/Get/Resource-2011/Byalokoz__E.L.__Novyy__schet__vremeni__v__techenie__sutok__izd__2(1).pdf
55 # Brazil's Divisão Serviço da Hora (DSHO),
56 # History of Summer Time
57 # <http://pcdsh01.on.br/HISTHV.htm>
58 # (1998-09-21, in Portuguese)
61 # I invented the abbreviations marked '*' in the following table;
62 # the rest are from earlier versions of this file, or from other sources.
63 # Corrections are welcome!
66 # -4:00 AST ADT Atlantic
67 # -3:00 WGT WGST Western Greenland*
68 # -1:00 EGT EGST Eastern Greenland*
69 # 0:00 GMT BST BDST Greenwich, British Summer
70 # 0:00 GMT IST Greenwich, Irish Summer
71 # 0:00 WET WEST WEMT Western Europe
72 # 0:19:32.13 AMT NST Amsterdam, Netherlands Summer (1835-1937)*
73 # 0:20 NET NEST Netherlands (1937-1940)*
74 # 1:00 BST British Standard (1968-1971)
75 # 1:00 CET CEST CEMT Central Europe
76 # 1:00:14 SET Swedish (1879-1899)*
77 # 2:00 EET EEST Eastern Europe
78 # 3:00 FET Further-eastern Europe (2011-2014)*
79 # 3:00 MSK MSD MSM* Minsk, Moscow
81 # From Peter Ilieve (1994-12-04),
82 # The original six [EU members]: Belgium, France, (West) Germany, Italy,
83 # Luxembourg, the Netherlands.
84 # Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
85 # Plus, from 1 Jan 81: Greece.
86 # Plus, from 1 Jan 86: Spain, Portugal.
87 # Plus, from 1 Jan 95: Austria, Finland, Sweden. (Norway negotiated terms for
88 # entry but in a referendum on 28 Nov 94 the people voted No by 52.2% to 47.8%
89 # on a turnout of 88.6%. This was almost the same result as Norway's previous
90 # referendum in 1972, they are the only country to have said No twice.
91 # Referendums in the other three countries voted Yes.)
93 # Estonia ... uses EU dates but not at 01:00 GMT, they use midnight GMT.
94 # I don't think they know yet what they will do from 1996 onwards.
96 # There shouldn't be any [current members who are not using EU rules].
97 # A Directive has the force of law, member states are obliged to enact
98 # national law to implement it. The only contentious issue was the
99 # different end date for the UK and Ireland, and this was always allowed
103 ###############################################################################
105 # Britain (United Kingdom) and Ireland (Eire)
107 # From Peter Ilieve (1994-07-06):
109 # On 17 Jan 1994 the Independent, a UK quality newspaper, had a piece about
110 # historical vistas along the Thames in west London. There was a photo
111 # and a sketch map showing some of the sightlines involved. One paragraph
114 # 'An old stone obelisk marking a forgotten terrestrial meridian stands
115 # beside the river at Kew. In the 18th century, before time and longitude
116 # was standardised by the Royal Observatory in Greenwich, scholars observed
117 # this stone and the movement of stars from Kew Observatory nearby. They
118 # made their calculations and set the time for the Horse Guards and Parliament,
119 # but now the stone is obscured by scrubwood and can only be seen by walking
120 # along the towpath within a few yards of it.'
122 # I have a one inch to one mile map of London and my estimate of the stone's
123 # position is 51 degrees 28' 30" N, 0 degrees 18' 45" W. The longitude should
124 # be within about +-2". The Ordnance Survey grid reference is TQ172761.
126 # [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]
128 # From Paul Eggert (1993-11-18):
130 # Howse writes that Britain was the first country to use standard time.
131 # The railways cared most about the inconsistencies of local mean time,
132 # and it was they who forced a uniform time on the country.
133 # The original idea was credited to Dr. William Hyde Wollaston (1766-1828)
134 # and was popularized by Abraham Follett Osler (1808-1903).
135 # The first railway to adopt London time was the Great Western Railway
136 # in November 1840; other railways followed suit, and by 1847 most
137 # (though not all) railways used London time. On 1847-09-22 the
138 # Railway Clearing House, an industry standards body, recommended that GMT be
139 # adopted at all stations as soon as the General Post Office permitted it.
140 # The transition occurred on 12-01 for the L&NW, the Caledonian,
141 # and presumably other railways; the January 1848 Bradshaw's lists many
142 # railways as using GMT. By 1855 the vast majority of public
143 # clocks in Britain were set to GMT (though some, like the great clock
144 # on Tom Tower at Christ Church, Oxford, were fitted with two minute hands,
145 # one for local time and one for GMT). The last major holdout was the legal
146 # system, which stubbornly stuck to local time for many years, leading
147 # to oddities like polls opening at 08:13 and closing at 16:13.
148 # The legal system finally switched to GMT when the Statutes (Definition
149 # of Time) Act took effect; it received the Royal Assent on 1880-08-02.
151 # In the tables below, we condense this complicated story into a single
152 # transition date for London, namely 1847-12-01. We don't know as much
153 # about Dublin, so we use 1880-08-02, the legal transition time.
155 # From Paul Eggert (2014-07-19):
156 # The ancients had no need for daylight saving, as they kept time
157 # informally or via hours whose length depended on the time of year.
158 # Daylight saving time in its modern sense was invented by the
159 # New Zealand entomologist George Vernon Hudson (1867-1946),
160 # whose day job as a postal clerk led him to value
161 # after-hours daylight in which to pursue his research.
162 # In 1895 he presented a paper to the Wellington Philosophical Society
163 # that proposed a two-hour daylight-saving shift. See:
164 # Hudson GV. On seasonal time-adjustment in countries south of lat. 30 deg.
165 # Transactions and Proceedings of the New Zealand Institute. 1895;28:734
166 # http://rsnz.natlib.govt.nz/volume/rsnz_28/rsnz_28_00_006110.html
167 # Although some interest was expressed in New Zealand, his proposal
168 # did not find its way into law and eventually it was almost forgotten.
170 # In England, DST was independently reinvented by William Willett (1857-1915),
171 # a London builder and member of the Royal Astronomical Society
172 # who circulated a pamphlet "The Waste of Daylight" (1907)
173 # that proposed advancing clocks 20 minutes on each of four Sundays in April,
174 # and retarding them by the same amount on four Sundays in September.
175 # A bill was drafted in 1909 and introduced in Parliament several times,
176 # but it met with ridicule and opposition, especially from farming interests.
177 # Later editions of the pamphlet proposed one-hour summer time, and
178 # it was eventually adopted as a wartime measure in 1916.
179 # See: Summer Time Arrives Early, The Times (2000-05-18).
180 # A monument to Willett was unveiled on 1927-05-21, in an open space in
181 # a 45-acre wood near Chislehurst, Kent that was purchased by popular
182 # subscription and open to the public. On the south face of the monolith,
183 # designed by G. W. Miller, is the William Willett Memorial Sundial,
184 # which is permanently set to Summer Time.
186 # From Winston Churchill (1934-04-28):
187 # It is one of the paradoxes of history that we should owe the boon of
188 # summer time, which gives every year to the people of this country
189 # between 160 and 170 hours more daylight leisure, to a war which
190 # plunged Europe into darkness for four years, and shook the
191 # foundations of civilization throughout the world.
192 # -- "A Silent Toast to William Willett", Pictorial Weekly;
193 # republished in Finest Hour (Spring 2002) 1(114):26
194 # http://www.winstonchurchill.org/images/finesthour/Vol.01%20No.114.pdf
196 # From Paul Eggert (2015-08-08):
197 # The OED Supplement says that the English originally said "Daylight Saving"
198 # when they were debating the adoption of DST in 1908; but by 1916 this
199 # term appears only in quotes taken from DST's opponents, whereas the
200 # proponents (who eventually won the argument) are quoted as using "Summer".
201 # The term "Summer Time" was introduced by Herbert Samuel, Home Secretary; see:
202 # Viscount Samuel. Leisure in a Democracy. Cambridge University Press
203 # ISBN 978-1-107-49471-8 (1949, reissued 2015), p 8.
205 # From Arthur David Olson (1989-01-19):
206 # A source at the British Information Office in New York avers that it's
207 # known as "British" Summer Time in all parts of the United Kingdom.
209 # Date: 4 Jan 89 08:57:25 GMT (Wed)
210 # From: Jonathan Leffler
211 # [British Summer Time] is fixed annually by Act of Parliament.
212 # If you can predict what Parliament will do, you should be in
213 # politics making a fortune, not computing.
215 # From Chris Carrier (1996-06-14):
216 # I remember reading in various wartime issues of the London Times the
217 # acronym BDST for British Double Summer Time. Look for the published
218 # time of sunrise and sunset in The Times, when BDST was in effect, and
219 # if you find a zone reference it will say, "All times B.D.S.T."
221 # From Joseph S. Myers (1999-09-02):
222 # ... some military cables (WO 219/4100 - this is a copy from the
223 # main SHAEF archives held in the US National Archives, SHAEF/5252/8/516)
224 # agree that the usage is BDST (this appears in a message dated 17 Feb 1945).
226 # From Joseph S. Myers (2000-10-03):
227 # On 18th April 1941, Sir Stephen Tallents of the BBC wrote to Sir
228 # Alexander Maxwell of the Home Office asking whether there was any
229 # official designation; the reply of the 21st was that there wasn't
230 # but he couldn't think of anything better than the "Double British
231 # Summer Time" that the BBC had been using informally.
232 # http://www.polyomino.org.uk/british-time/bbc-19410418.png
233 # http://www.polyomino.org.uk/british-time/ho-19410421.png
235 # From Sir Alexander Maxwell in the above-mentioned letter (1941-04-21):
236 # [N]o official designation has as far as I know been adopted for the time
237 # which is to be introduced in May....
238 # I cannot think of anything better than "Double British Summer Time"
239 # which could not be said to run counter to any official description.
241 # From Paul Eggert (2000-10-02):
242 # Howse writes (p 157) 'DBST' too, but 'BDST' seems to have been common
243 # and follows the more usual convention of putting the location name first,
246 # Peter Ilieve (1998-04-19) described at length
247 # the history of summer time legislation in the United Kingdom.
248 # Since 1998 Joseph S. Myers has been updating
249 # and extending this list, which can be found in
250 # http://www.polyomino.org.uk/british-time/
252 # From Joseph S. Myers (1998-01-06):
254 # The legal time in the UK outside of summer time is definitely GMT, not UTC;
255 # see Lord Tanlaw's speech
256 # http://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0
257 # (Lords Hansard 11 June 1997 columns 964 to 976).
259 # From Paul Eggert (2006-03-22):
261 # For lack of other data, follow Shanks & Pottenger for Eire in 1940-1948.
263 # Given Ilieve and Myers's data, the following claims by Shanks & Pottenger
265 # * Wales did not switch from GMT to daylight saving time until
266 # 1921 Apr 3, when they began to conform with the rest of Great Britain.
267 # Actually, Wales was identical after 1880.
268 # * Eire had two transitions on 1916 Oct 1.
269 # It actually just had one transition.
270 # * Northern Ireland used single daylight saving time throughout WW II.
271 # Actually, it conformed to Britain.
272 # * GB-Eire changed standard time to 1 hour ahead of GMT on 1968-02-18.
273 # Actually, that date saw the usual switch to summer time.
274 # Standard time was not changed until 1968-10-27 (the clocks didn't change).
276 # Here is another incorrect claim by Shanks & Pottenger:
277 # * Jersey, Guernsey, and the Isle of Man did not switch from GMT
278 # to daylight saving time until 1921 Apr 3, when they began to
279 # conform with Great Britain.
280 # S.R.&O. 1916, No. 382 and HO 45/10811/312364 (quoted above) say otherwise.
282 # The following claim by Shanks & Pottenger is possible though doubtful;
283 # we'll ignore it for now.
284 # * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00.
287 # Whitman says Dublin Mean Time was -0:25:21, which is more precise than
288 # Shanks & Pottenger.
289 # Perhaps this was Dunsink Observatory Time, as Dunsink Observatory
290 # (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was
291 # to London. For example:
293 # "Timeball on the ballast office is down. Dunsink time."
294 # -- James Joyce, Ulysses
296 # "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time
297 # was among various actions undertaken by the 'English' government that
298 # would 'put the whole country into the SF (Sinn Féin) camp'. She claimed
299 # Irish 'public feeling (was) outraged by forcing of English time on us'."
300 # -- Parsons M. Dublin lost its time zone - and 25 minutes - after 1916 Rising.
301 # Irish Times 2014-10-27.
302 # http://www.irishtimes.com/news/politics/dublin-lost-its-time-zone-and-25-minutes-after-1916-rising-1.1977411
304 # From Joseph S. Myers (2005-01-26):
305 # Irish laws are available online at <http://www.irishstatutebook.ie>.
306 # These include various relating to legal time, for example:
308 # ZZA13Y1923.html ZZA12Y1924.html ZZA8Y1925.html ZZSIV20PG1267.html
310 # ZZSI71Y1947.html ZZSI128Y1948.html ZZSI23Y1949.html ZZSI41Y1950.html
311 # ZZSI27Y1951.html ZZSI73Y1952.html
313 # ZZSI11Y1961.html ZZSI232Y1961.html ZZSI182Y1962.html
314 # ZZSI167Y1963.html ZZSI257Y1964.html ZZSI198Y1967.html
315 # ZZA23Y1968.html ZZA17Y1971.html
317 # ZZSI67Y1981.html ZZSI212Y1982.html ZZSI45Y1986.html
318 # ZZSI264Y1988.html ZZSI52Y1990.html ZZSI371Y1992.html
319 # ZZSI395Y1994.html ZZSI484Y1997.html ZZSI506Y2001.html
321 # [These are all relative to the root, e.g., the first is
322 # <http://www.irishstatutebook.ie/ZZA13Y1923.html>.]
324 # (These are those I found, but there could be more. In any case these
325 # should allow various updates to the comments in the europe file to cover
326 # the laws applicable in Ireland.)
328 # (Note that the time in the Republic of Ireland since 1968 has been defined
329 # in terms of standard time being GMT+1 with a period of winter time when it
330 # is GMT, rather than standard time being GMT with a period of summer time
333 # From Paul Eggert (1999-03-28):
334 # Clive Feather (<news:859845706.26043.0@office.demon.net>, 1997-03-31)
335 # reports that Folkestone (Cheriton) Shuttle Terminal uses Concession Time
336 # (CT), equivalent to French civil time.
337 # Julian Hill (<news:36118128.5A14@virgin.net>, 1998-09-30) reports that
338 # trains between Dollands Moor (the freight facility next door)
339 # and Frethun run in CT.
340 # My admittedly uninformed guess is that the terminal has two authorities,
341 # the French concession operators and the British civil authorities,
342 # and that the time depends on who you're talking to.
343 # If, say, the British police were called to the station for some reason,
344 # I would expect the official police report to use GMT/BST and not CET/CEST.
345 # This is a borderline case, but for now let's stick to GMT/BST.
347 # From an anonymous contributor (1996-06-02):
348 # The law governing time in Ireland is under Statutory Instrument SI 395/94,
349 # which gives force to European Union 7th Council Directive No. 94/21/EC.
350 # Under this directive, the Minister for Justice in Ireland makes appropriate
351 # regulations. I spoke this morning with the Secretary of the Department of
352 # Justice (tel +353 1 678 9711) who confirmed to me that the correct name is
353 # "Irish Summer Time", abbreviated to "IST".
355 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
356 # Summer Time Act, 1916
357 Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST
358 Rule GB-Eire 1916 only - Oct 1 2:00s 0 GMT
359 # S.R.&O. 1917, No. 358
360 Rule GB-Eire 1917 only - Apr 8 2:00s 1:00 BST
361 Rule GB-Eire 1917 only - Sep 17 2:00s 0 GMT
362 # S.R.&O. 1918, No. 274
363 Rule GB-Eire 1918 only - Mar 24 2:00s 1:00 BST
364 Rule GB-Eire 1918 only - Sep 30 2:00s 0 GMT
365 # S.R.&O. 1919, No. 297
366 Rule GB-Eire 1919 only - Mar 30 2:00s 1:00 BST
367 Rule GB-Eire 1919 only - Sep 29 2:00s 0 GMT
368 # S.R.&O. 1920, No. 458
369 Rule GB-Eire 1920 only - Mar 28 2:00s 1:00 BST
370 # S.R.&O. 1920, No. 1844
371 Rule GB-Eire 1920 only - Oct 25 2:00s 0 GMT
372 # S.R.&O. 1921, No. 363
373 Rule GB-Eire 1921 only - Apr 3 2:00s 1:00 BST
374 Rule GB-Eire 1921 only - Oct 3 2:00s 0 GMT
375 # S.R.&O. 1922, No. 264
376 Rule GB-Eire 1922 only - Mar 26 2:00s 1:00 BST
377 Rule GB-Eire 1922 only - Oct 8 2:00s 0 GMT
378 # The Summer Time Act, 1922
379 Rule GB-Eire 1923 only - Apr Sun>=16 2:00s 1:00 BST
380 Rule GB-Eire 1923 1924 - Sep Sun>=16 2:00s 0 GMT
381 Rule GB-Eire 1924 only - Apr Sun>=9 2:00s 1:00 BST
382 Rule GB-Eire 1925 1926 - Apr Sun>=16 2:00s 1:00 BST
383 # The Summer Time Act, 1925
384 Rule GB-Eire 1925 1938 - Oct Sun>=2 2:00s 0 GMT
385 Rule GB-Eire 1927 only - Apr Sun>=9 2:00s 1:00 BST
386 Rule GB-Eire 1928 1929 - Apr Sun>=16 2:00s 1:00 BST
387 Rule GB-Eire 1930 only - Apr Sun>=9 2:00s 1:00 BST
388 Rule GB-Eire 1931 1932 - Apr Sun>=16 2:00s 1:00 BST
389 Rule GB-Eire 1933 only - Apr Sun>=9 2:00s 1:00 BST
390 Rule GB-Eire 1934 only - Apr Sun>=16 2:00s 1:00 BST
391 Rule GB-Eire 1935 only - Apr Sun>=9 2:00s 1:00 BST
392 Rule GB-Eire 1936 1937 - Apr Sun>=16 2:00s 1:00 BST
393 Rule GB-Eire 1938 only - Apr Sun>=9 2:00s 1:00 BST
394 Rule GB-Eire 1939 only - Apr Sun>=16 2:00s 1:00 BST
395 # S.R.&O. 1939, No. 1379
396 Rule GB-Eire 1939 only - Nov Sun>=16 2:00s 0 GMT
397 # S.R.&O. 1940, No. 172 and No. 1883
398 Rule GB-Eire 1940 only - Feb Sun>=23 2:00s 1:00 BST
399 # S.R.&O. 1941, No. 476
400 Rule GB-Eire 1941 only - May Sun>=2 1:00s 2:00 BDST
401 Rule GB-Eire 1941 1943 - Aug Sun>=9 1:00s 1:00 BST
402 # S.R.&O. 1942, No. 506
403 Rule GB-Eire 1942 1944 - Apr Sun>=2 1:00s 2:00 BDST
404 # S.R.&O. 1944, No. 932
405 Rule GB-Eire 1944 only - Sep Sun>=16 1:00s 1:00 BST
406 # S.R.&O. 1945, No. 312
407 Rule GB-Eire 1945 only - Apr Mon>=2 1:00s 2:00 BDST
408 Rule GB-Eire 1945 only - Jul Sun>=9 1:00s 1:00 BST
409 # S.R.&O. 1945, No. 1208
410 Rule GB-Eire 1945 1946 - Oct Sun>=2 2:00s 0 GMT
411 Rule GB-Eire 1946 only - Apr Sun>=9 2:00s 1:00 BST
412 # The Summer Time Act, 1947
413 Rule GB-Eire 1947 only - Mar 16 2:00s 1:00 BST
414 Rule GB-Eire 1947 only - Apr 13 1:00s 2:00 BDST
415 Rule GB-Eire 1947 only - Aug 10 1:00s 1:00 BST
416 Rule GB-Eire 1947 only - Nov 2 2:00s 0 GMT
417 # Summer Time Order, 1948 (S.I. 1948/495)
418 Rule GB-Eire 1948 only - Mar 14 2:00s 1:00 BST
419 Rule GB-Eire 1948 only - Oct 31 2:00s 0 GMT
420 # Summer Time Order, 1949 (S.I. 1949/373)
421 Rule GB-Eire 1949 only - Apr 3 2:00s 1:00 BST
422 Rule GB-Eire 1949 only - Oct 30 2:00s 0 GMT
423 # Summer Time Order, 1950 (S.I. 1950/518)
424 # Summer Time Order, 1951 (S.I. 1951/430)
425 # Summer Time Order, 1952 (S.I. 1952/451)
426 Rule GB-Eire 1950 1952 - Apr Sun>=14 2:00s 1:00 BST
427 Rule GB-Eire 1950 1952 - Oct Sun>=21 2:00s 0 GMT
428 # revert to the rules of the Summer Time Act, 1925
429 Rule GB-Eire 1953 only - Apr Sun>=16 2:00s 1:00 BST
430 Rule GB-Eire 1953 1960 - Oct Sun>=2 2:00s 0 GMT
431 Rule GB-Eire 1954 only - Apr Sun>=9 2:00s 1:00 BST
432 Rule GB-Eire 1955 1956 - Apr Sun>=16 2:00s 1:00 BST
433 Rule GB-Eire 1957 only - Apr Sun>=9 2:00s 1:00 BST
434 Rule GB-Eire 1958 1959 - Apr Sun>=16 2:00s 1:00 BST
435 Rule GB-Eire 1960 only - Apr Sun>=9 2:00s 1:00 BST
436 # Summer Time Order, 1961 (S.I. 1961/71)
437 # Summer Time (1962) Order, 1961 (S.I. 1961/2465)
438 # Summer Time Order, 1963 (S.I. 1963/81)
439 Rule GB-Eire 1961 1963 - Mar lastSun 2:00s 1:00 BST
440 Rule GB-Eire 1961 1968 - Oct Sun>=23 2:00s 0 GMT
441 # Summer Time (1964) Order, 1963 (S.I. 1963/2101)
442 # Summer Time Order, 1964 (S.I. 1964/1201)
443 # Summer Time Order, 1967 (S.I. 1967/1148)
444 Rule GB-Eire 1964 1967 - Mar Sun>=19 2:00s 1:00 BST
445 # Summer Time Order, 1968 (S.I. 1968/117)
446 Rule GB-Eire 1968 only - Feb 18 2:00s 1:00 BST
447 # The British Standard Time Act, 1968
449 # The Summer Time Act, 1972
450 Rule GB-Eire 1972 1980 - Mar Sun>=16 2:00s 1:00 BST
451 Rule GB-Eire 1972 1980 - Oct Sun>=23 2:00s 0 GMT
452 # Summer Time Order, 1980 (S.I. 1980/1089)
453 # Summer Time Order, 1982 (S.I. 1982/1673)
454 # Summer Time Order, 1986 (S.I. 1986/223)
455 # Summer Time Order, 1988 (S.I. 1988/931)
456 Rule GB-Eire 1981 1995 - Mar lastSun 1:00u 1:00 BST
457 Rule GB-Eire 1981 1989 - Oct Sun>=23 1:00u 0 GMT
458 # Summer Time Order, 1989 (S.I. 1989/985)
459 # Summer Time Order, 1992 (S.I. 1992/1729)
460 # Summer Time Order 1994 (S.I. 1994/2798)
461 Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT
462 # Summer Time Order 1997 (S.I. 1997/2982)
463 # See EU for rules starting in 1996.
465 # Use Europe/London for Jersey, Guernsey, and the Isle of Man.
467 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
468 Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s
469 0:00 GB-Eire %s 1968 Oct 27
470 1:00 - BST 1971 Oct 31 2:00u
473 Link Europe/London Europe/Jersey
474 Link Europe/London Europe/Guernsey
475 Link Europe/London Europe/Isle_of_Man
477 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
478 Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
479 -0:25:21 - DMT 1916 May 21 2:00
480 -0:25:21 1:00 IST 1916 Oct 1 2:00s
481 0:00 GB-Eire %s 1921 Dec 6 # independence
482 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00
483 0:00 1:00 IST 1946 Oct 6 2:00
484 0:00 - GMT 1947 Mar 16 2:00
485 0:00 1:00 IST 1947 Nov 2 2:00
486 0:00 - GMT 1948 Apr 18 2:00
487 0:00 GB-Eire GMT/IST 1968 Oct 27
488 1:00 - IST 1971 Oct 31 2:00u
489 0:00 GB-Eire GMT/IST 1996
492 ###############################################################################
496 # EU rules are for the European Union, previously known as the EC, EEC,
497 # Common Market, etc.
499 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
500 Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
501 Rule EU 1977 only - Sep lastSun 1:00u 0 -
502 Rule EU 1978 only - Oct 1 1:00u 0 -
503 Rule EU 1979 1995 - Sep lastSun 1:00u 0 -
504 Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
505 Rule EU 1996 max - Oct lastSun 1:00u 0 -
506 # The most recent directive covers the years starting in 2002. See:
507 # Directive 2000/84/EC of the European Parliament and of the Council
508 # of 19 January 2001 on summer-time arrangements.
509 # http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0084:EN:NOT
511 # W-Eur differs from EU only in that W-Eur uses standard time.
512 Rule W-Eur 1977 1980 - Apr Sun>=1 1:00s 1:00 S
513 Rule W-Eur 1977 only - Sep lastSun 1:00s 0 -
514 Rule W-Eur 1978 only - Oct 1 1:00s 0 -
515 Rule W-Eur 1979 1995 - Sep lastSun 1:00s 0 -
516 Rule W-Eur 1981 max - Mar lastSun 1:00s 1:00 S
517 Rule W-Eur 1996 max - Oct lastSun 1:00s 0 -
519 # Older C-Eur rules are for convenience in the tables.
520 # From 1977 on, C-Eur differs from EU only in that C-Eur uses standard time.
521 Rule C-Eur 1916 only - Apr 30 23:00 1:00 S
522 Rule C-Eur 1916 only - Oct 1 1:00 0 -
523 Rule C-Eur 1917 1918 - Apr Mon>=15 2:00s 1:00 S
524 Rule C-Eur 1917 1918 - Sep Mon>=15 2:00s 0 -
525 Rule C-Eur 1940 only - Apr 1 2:00s 1:00 S
526 Rule C-Eur 1942 only - Nov 2 2:00s 0 -
527 Rule C-Eur 1943 only - Mar 29 2:00s 1:00 S
528 Rule C-Eur 1943 only - Oct 4 2:00s 0 -
529 Rule C-Eur 1944 1945 - Apr Mon>=1 2:00s 1:00 S
530 # Whitman gives 1944 Oct 7; go with Shanks & Pottenger.
531 Rule C-Eur 1944 only - Oct 2 2:00s 0 -
532 # From Jesper Nørgaard Welen (2008-07-13):
534 # I found what is probably a typo of 2:00 which should perhaps be 2:00s
535 # in the C-Eur rule from tz database version 2008d (this part was
536 # corrected in version 2008d). The circumstantial evidence is simply the
537 # tz database itself, as seen below:
539 # Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
540 # 0:00 France WE%sT 1945 Sep 16 3:00
542 # Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
543 # 0:00 France WE%sT 1945 Sep 16 3:00
545 # Zone Europe/Belgrade 1:22:00 - LMT 1884
546 # 1:00 1:00 CEST 1945 Sep 16 2:00s
548 # Rule France 1945 only - Sep 16 3:00 0 -
549 # Rule Belgium 1945 only - Sep 16 2:00s 0 -
550 # Rule Neth 1945 only - Sep 16 2:00s 0 -
552 # The rule line to be changed is:
554 # Rule C-Eur 1945 only - Sep 16 2:00 0 -
556 # It seems that Paris, Monaco, Rule France, Rule Belgium all agree on
557 # 2:00 standard time, e.g. 3:00 local time. However there are no
558 # countries that use C-Eur rules in September 1945, so the only items
559 # affected are apparently these fictitious zones that translate acronyms
562 # Zone CET 1:00 C-Eur CE%sT
563 # Zone MET 1:00 C-Eur ME%sT
565 # It this is right then the corrected version would look like:
567 # Rule C-Eur 1945 only - Sep 16 2:00s 0 -
569 # A small step for mankind though 8-)
570 Rule C-Eur 1945 only - Sep 16 2:00s 0 -
571 Rule C-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 S
572 Rule C-Eur 1977 only - Sep lastSun 2:00s 0 -
573 Rule C-Eur 1978 only - Oct 1 2:00s 0 -
574 Rule C-Eur 1979 1995 - Sep lastSun 2:00s 0 -
575 Rule C-Eur 1981 max - Mar lastSun 2:00s 1:00 S
576 Rule C-Eur 1996 max - Oct lastSun 2:00s 0 -
578 # E-Eur differs from EU only in that E-Eur switches at midnight local time.
579 Rule E-Eur 1977 1980 - Apr Sun>=1 0:00 1:00 S
580 Rule E-Eur 1977 only - Sep lastSun 0:00 0 -
581 Rule E-Eur 1978 only - Oct 1 0:00 0 -
582 Rule E-Eur 1979 1995 - Sep lastSun 0:00 0 -
583 Rule E-Eur 1981 max - Mar lastSun 0:00 1:00 S
584 Rule E-Eur 1996 max - Oct lastSun 0:00 0 -
586 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
587 Rule Russia 1917 only - Jul 1 23:00 1:00 MST # Moscow Summer Time
588 Rule Russia 1917 only - Dec 28 0:00 0 MMT # Moscow Mean Time
589 Rule Russia 1918 only - May 31 22:00 2:00 MDST # Moscow Double Summer Time
590 Rule Russia 1918 only - Sep 16 1:00 1:00 MST
591 Rule Russia 1919 only - May 31 23:00 2:00 MDST
592 Rule Russia 1919 only - Jul 1 2:00 1:00 MSD
593 Rule Russia 1919 only - Aug 16 0:00 0 MSK
594 Rule Russia 1921 only - Feb 14 23:00 1:00 MSD
595 Rule Russia 1921 only - Mar 20 23:00 2:00 MSM # Midsummer
596 Rule Russia 1921 only - Sep 1 0:00 1:00 MSD
597 Rule Russia 1921 only - Oct 1 0:00 0 -
598 # Act No. 925 of the Council of Ministers of the USSR (1980-10-24):
599 Rule Russia 1981 1984 - Apr 1 0:00 1:00 S
600 Rule Russia 1981 1983 - Oct 1 0:00 0 -
601 # Act No. 967 of the Council of Ministers of the USSR (1984-09-13), repeated in
602 # Act No. 227 of the Council of Ministers of the USSR (1989-03-14):
603 Rule Russia 1984 1991 - Sep lastSun 2:00s 0 -
604 Rule Russia 1985 1991 - Mar lastSun 2:00s 1:00 S
606 Rule Russia 1992 only - Mar lastSat 23:00 1:00 S
607 Rule Russia 1992 only - Sep lastSat 23:00 0 -
608 Rule Russia 1993 2010 - Mar lastSun 2:00s 1:00 S
609 Rule Russia 1993 1995 - Sep lastSun 2:00s 0 -
610 Rule Russia 1996 2010 - Oct lastSun 2:00s 0 -
611 # As described below, Russia's 2014 change affects Zone data, not Rule data.
613 # From Alexander Krivenyshev (2011-06-14):
614 # According to Kremlin press service, Russian President Dmitry Medvedev
615 # signed a federal law "On calculation of time" on June 9, 2011.
616 # According to the law Russia is abolishing daylight saving time.
618 # Medvedev signed a law "On the Calculation of Time" (in russian):
619 # http://bmockbe.ru/events/?ID=7583
621 # Medvedev signed a law on the calculation of the time (in russian):
622 # http://www.regnum.ru/news/polit/1413906.html
624 # From Arthur David Olson (2011-06-15):
625 # Take "abolishing daylight saving time" to mean that time is now considered
628 # These are for backward compatibility with older versions.
630 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
631 Zone WET 0:00 EU WE%sT
632 Zone CET 1:00 C-Eur CE%sT
633 Zone MET 1:00 C-Eur ME%sT
634 Zone EET 2:00 EU EE%sT
636 # Previous editions of this database used abbreviations like MET DST
637 # for Central European Summer Time, but this didn't agree with common usage.
639 # From Markus Kuhn (1996-07-12):
640 # The official German names ... are
642 # Mitteleuropäische Zeit (MEZ) = UTC+01:00
643 # Mitteleuropäische Sommerzeit (MESZ) = UTC+02:00
645 # as defined in the German Time Act (Gesetz über die Zeitbestimmung (ZeitG),
646 # 1978-07-25, Bundesgesetzblatt, Jahrgang 1978, Teil I, S. 1110-1111)....
647 # I wrote ... to the German Federal Physical-Technical Institution
649 # Physikalisch-Technische Bundesanstalt (PTB)
650 # Laboratorium 4.41 "Zeiteinheit"
652 # D-38023 Braunschweig
653 # phone: +49 531 592-0
655 # ... I received today an answer letter from Dr. Peter Hetzel, head of the PTB
656 # department for time and frequency transmission. He explained that the
657 # PTB translates MEZ and MESZ into English as
659 # Central European Time (CET) = UTC+01:00
660 # Central European Summer Time (CEST) = UTC+02:00
664 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
665 Rule Albania 1940 only - Jun 16 0:00 1:00 S
666 Rule Albania 1942 only - Nov 2 3:00 0 -
667 Rule Albania 1943 only - Mar 29 2:00 1:00 S
668 Rule Albania 1943 only - Apr 10 3:00 0 -
669 Rule Albania 1974 only - May 4 0:00 1:00 S
670 Rule Albania 1974 only - Oct 2 0:00 0 -
671 Rule Albania 1975 only - May 1 0:00 1:00 S
672 Rule Albania 1975 only - Oct 2 0:00 0 -
673 Rule Albania 1976 only - May 2 0:00 1:00 S
674 Rule Albania 1976 only - Oct 3 0:00 0 -
675 Rule Albania 1977 only - May 8 0:00 1:00 S
676 Rule Albania 1977 only - Oct 2 0:00 0 -
677 Rule Albania 1978 only - May 6 0:00 1:00 S
678 Rule Albania 1978 only - Oct 1 0:00 0 -
679 Rule Albania 1979 only - May 5 0:00 1:00 S
680 Rule Albania 1979 only - Sep 30 0:00 0 -
681 Rule Albania 1980 only - May 3 0:00 1:00 S
682 Rule Albania 1980 only - Oct 4 0:00 0 -
683 Rule Albania 1981 only - Apr 26 0:00 1:00 S
684 Rule Albania 1981 only - Sep 27 0:00 0 -
685 Rule Albania 1982 only - May 2 0:00 1:00 S
686 Rule Albania 1982 only - Oct 3 0:00 0 -
687 Rule Albania 1983 only - Apr 18 0:00 1:00 S
688 Rule Albania 1983 only - Oct 1 0:00 0 -
689 Rule Albania 1984 only - Apr 1 0:00 1:00 S
690 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
691 Zone Europe/Tirane 1:19:20 - LMT 1914
692 1:00 - CET 1940 Jun 16
693 1:00 Albania CE%sT 1984 Jul
697 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
698 Zone Europe/Andorra 0:06:04 - LMT 1901
699 0:00 - WET 1946 Sep 30
700 1:00 - CET 1985 Mar 31 2:00
705 # Milne says Vienna time was 1:05:21.
707 # From Paul Eggert (2006-03-22): Shanks & Pottenger give 1918-06-16 and
708 # 1945-11-18, but the Austrian Federal Office of Metrology and
709 # Surveying (BEV) gives 1918-09-16 and for Vienna gives the "alleged"
710 # date of 1945-04-12 with no time. For the 1980-04-06 transition
711 # Shanks & Pottenger give 02:00, the BEV 00:00. Go with the BEV,
712 # and guess 02:00 for 1945-04-12.
714 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
715 Rule Austria 1920 only - Apr 5 2:00s 1:00 S
716 Rule Austria 1920 only - Sep 13 2:00s 0 -
717 Rule Austria 1946 only - Apr 14 2:00s 1:00 S
718 Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 -
719 Rule Austria 1947 only - Apr 6 2:00s 1:00 S
720 Rule Austria 1948 only - Apr 18 2:00s 1:00 S
721 Rule Austria 1980 only - Apr 6 0:00 1:00 S
722 Rule Austria 1980 only - Sep 28 0:00 0 -
723 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
724 Zone Europe/Vienna 1:05:21 - LMT 1893 Apr
725 1:00 C-Eur CE%sT 1920
726 1:00 Austria CE%sT 1940 Apr 1 2:00s
727 1:00 C-Eur CE%sT 1945 Apr 2 2:00s
728 1:00 1:00 CEST 1945 Apr 12 2:00s
730 1:00 Austria CE%sT 1981
734 # From Yauhen Kharuzhy (2011-09-16):
735 # By latest Belarus government act Europe/Minsk timezone was changed to
736 # GMT+3 without DST (was GMT+2 with DST).
738 # Sources (Russian language):
739 # http://www.belta.by/ru/all_news/society/V-Belarusi-otmenjaetsja-perexod-na-sezonnoe-vremja_i_572952.html
740 # http://naviny.by/rubrics/society/2011/09/16/ic_articles_116_175144/
741 # http://news.tut.by/society/250578.html
743 # From Alexander Bokovoy (2014-10-09):
744 # Belarussian government decided against changing to winter time....
745 # http://eng.belta.by/all_news/society/Belarus-decides-against-adjusting-time-in-Russias-wake_i_76335.html
746 # From Paul Eggert (2014-10-08):
747 # Hence Belarus can share time zone abbreviations with Moscow again.
749 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
750 Zone Europe/Minsk 1:50:16 - LMT 1880
751 1:50 - MMT 1924 May 2 # Minsk Mean Time
752 2:00 - EET 1930 Jun 21
753 3:00 - MSK 1941 Jun 28
754 1:00 C-Eur CE%sT 1944 Jul 3
755 3:00 Russia MSK/MSD 1990
756 3:00 - MSK 1991 Mar 31 2:00s
757 2:00 1:00 EEST 1991 Sep 29 2:00s
758 2:00 - EET 1992 Mar 29 0:00s
759 2:00 1:00 EEST 1992 Sep 27 0:00s
760 2:00 Russia EE%sT 2011 Mar 27 2:00s
761 3:00 - FET 2014 Oct 26 1:00s
766 # From Paul Eggert (1997-07-02):
767 # Entries from 1918 through 1991 are taken from:
768 # Annuaire de L'Observatoire Royal de Belgique,
769 # Avenue Circulaire, 3, B-1180 BRUXELLES, CLVIIe année, 1991
770 # (Imprimerie HAYEZ, s.p.r.l., Rue Fin, 4, 1080 BRUXELLES, MCMXC),
772 # LMT before 1892 was 0:17:30, according to the official journal of Belgium:
773 # Moniteur Belge, Samedi 30 Avril 1892, N.121.
774 # Thanks to Pascal Delmoitie for these references.
775 # The 1918 rules are listed for completeness; they apply to unoccupied Belgium.
776 # Assume Brussels switched to WET in 1918 when the armistice took effect.
778 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
779 Rule Belgium 1918 only - Mar 9 0:00s 1:00 S
780 Rule Belgium 1918 1919 - Oct Sat>=1 23:00s 0 -
781 Rule Belgium 1919 only - Mar 1 23:00s 1:00 S
782 Rule Belgium 1920 only - Feb 14 23:00s 1:00 S
783 Rule Belgium 1920 only - Oct 23 23:00s 0 -
784 Rule Belgium 1921 only - Mar 14 23:00s 1:00 S
785 Rule Belgium 1921 only - Oct 25 23:00s 0 -
786 Rule Belgium 1922 only - Mar 25 23:00s 1:00 S
787 Rule Belgium 1922 1927 - Oct Sat>=1 23:00s 0 -
788 Rule Belgium 1923 only - Apr 21 23:00s 1:00 S
789 Rule Belgium 1924 only - Mar 29 23:00s 1:00 S
790 Rule Belgium 1925 only - Apr 4 23:00s 1:00 S
791 # DSH writes that a royal decree of 1926-02-22 specified the Sun following 3rd
792 # Sat in Apr (except if it's Easter, in which case it's one Sunday earlier),
793 # to Sun following 1st Sat in Oct, and that a royal decree of 1928-09-15
794 # changed the transition times to 02:00 GMT.
795 Rule Belgium 1926 only - Apr 17 23:00s 1:00 S
796 Rule Belgium 1927 only - Apr 9 23:00s 1:00 S
797 Rule Belgium 1928 only - Apr 14 23:00s 1:00 S
798 Rule Belgium 1928 1938 - Oct Sun>=2 2:00s 0 -
799 Rule Belgium 1929 only - Apr 21 2:00s 1:00 S
800 Rule Belgium 1930 only - Apr 13 2:00s 1:00 S
801 Rule Belgium 1931 only - Apr 19 2:00s 1:00 S
802 Rule Belgium 1932 only - Apr 3 2:00s 1:00 S
803 Rule Belgium 1933 only - Mar 26 2:00s 1:00 S
804 Rule Belgium 1934 only - Apr 8 2:00s 1:00 S
805 Rule Belgium 1935 only - Mar 31 2:00s 1:00 S
806 Rule Belgium 1936 only - Apr 19 2:00s 1:00 S
807 Rule Belgium 1937 only - Apr 4 2:00s 1:00 S
808 Rule Belgium 1938 only - Mar 27 2:00s 1:00 S
809 Rule Belgium 1939 only - Apr 16 2:00s 1:00 S
810 Rule Belgium 1939 only - Nov 19 2:00s 0 -
811 Rule Belgium 1940 only - Feb 25 2:00s 1:00 S
812 Rule Belgium 1944 only - Sep 17 2:00s 0 -
813 Rule Belgium 1945 only - Apr 2 2:00s 1:00 S
814 Rule Belgium 1945 only - Sep 16 2:00s 0 -
815 Rule Belgium 1946 only - May 19 2:00s 1:00 S
816 Rule Belgium 1946 only - Oct 7 2:00s 0 -
817 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
818 Zone Europe/Brussels 0:17:30 - LMT 1880
819 0:17:30 - BMT 1892 May 1 12:00 # Brussels MT
820 0:00 - WET 1914 Nov 8
821 1:00 - CET 1916 May 1 0:00
822 1:00 C-Eur CE%sT 1918 Nov 11 11:00u
823 0:00 Belgium WE%sT 1940 May 20 2:00s
824 1:00 C-Eur CE%sT 1944 Sep 3
825 1:00 Belgium CE%sT 1977
828 # Bosnia and Herzegovina
829 # See Europe/Belgrade.
833 # From Plamen Simenov via Steffen Thorsen (1999-09-09):
834 # A document of Government of Bulgaria (No. 94/1997) says:
835 # EET -> EETDST is in 03:00 Local time in last Sunday of March ...
836 # EETDST -> EET is in 04:00 Local time in last Sunday of October
838 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
839 Rule Bulg 1979 only - Mar 31 23:00 1:00 S
840 Rule Bulg 1979 only - Oct 1 1:00 0 -
841 Rule Bulg 1980 1982 - Apr Sat>=1 23:00 1:00 S
842 Rule Bulg 1980 only - Sep 29 1:00 0 -
843 Rule Bulg 1981 only - Sep 27 2:00 0 -
844 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
845 Zone Europe/Sofia 1:33:16 - LMT 1880
846 1:56:56 - IMT 1894 Nov 30 # Istanbul MT?
847 2:00 - EET 1942 Nov 2 3:00
848 1:00 C-Eur CE%sT 1945
849 1:00 - CET 1945 Apr 2 3:00
850 2:00 - EET 1979 Mar 31 23:00
851 2:00 Bulg EE%sT 1982 Sep 26 3:00
852 2:00 C-Eur EE%sT 1991
853 2:00 E-Eur EE%sT 1997
857 # See Europe/Belgrade.
860 # Please see the 'asia' file for Asia/Nicosia.
863 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
864 Rule Czech 1945 only - Apr 8 2:00s 1:00 S
865 Rule Czech 1945 only - Nov 18 2:00s 0 -
866 Rule Czech 1946 only - May 6 2:00s 1:00 S
867 Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
868 Rule Czech 1947 only - Apr 20 2:00s 1:00 S
869 Rule Czech 1948 only - Apr 18 2:00s 1:00 S
870 Rule Czech 1949 only - Apr 9 2:00s 1:00 S
871 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
872 Zone Europe/Prague 0:57:44 - LMT 1850
873 0:57:44 - PMT 1891 Oct # Prague Mean Time
874 1:00 C-Eur CE%sT 1944 Sep 17 2:00s
875 1:00 Czech CE%sT 1979
877 # Use Europe/Prague also for Slovakia.
879 # Denmark, Faroe Islands, and Greenland
881 # From Jesper Nørgaard Welen (2005-04-26):
882 # http://www.hum.aau.dk/~poe/tid/tine/DanskTid.htm says that the law
883 # [introducing standard time] was in effect from 1894-01-01....
884 # The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL
885 # confirms this, and states that the law was put forth 1893-03-29.
887 # The EU treaty with effect from 1973:
888 # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL
890 # This provoked a new law from 1974 to make possible summer time changes
891 # in subsequent decrees with the law
892 # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19740022330-REGL
894 # It seems however that no decree was set forward until 1980. I have
895 # not found any decree, but in another related law, the effecting DST
896 # changes are stated explicitly to be from 1980-04-06 at 02:00 to
897 # 1980-09-28 at 02:00. If this is true, this differs slightly from
898 # the EU rule in that DST runs to 02:00, not 03:00. We don't know
899 # when Denmark began using the EU rule correctly, but we have only
900 # confirmation of the 1980-time, so I presume it was correct in 1981:
901 # The law is about the management of the extra hour, concerning
902 # working hours reported and effect on obligatory-rest rules (which
903 # was suspended on that night):
904 # http://www.retsinfo.dk/_GETDOCI_/ACCN/C19801120554-REGL
906 # From Jesper Nørgaard Welen (2005-06-11):
907 # The Herning Folkeblad (1980-09-26) reported that the night between
908 # Saturday and Sunday the clock is set back from three to two.
910 # From Paul Eggert (2005-06-11):
911 # Hence the "02:00" of the 1980 law refers to standard time, not
912 # wall-clock time, and so the EU rules were in effect in 1980.
914 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
915 Rule Denmark 1916 only - May 14 23:00 1:00 S
916 Rule Denmark 1916 only - Sep 30 23:00 0 -
917 Rule Denmark 1940 only - May 15 0:00 1:00 S
918 Rule Denmark 1945 only - Apr 2 2:00s 1:00 S
919 Rule Denmark 1945 only - Aug 15 2:00s 0 -
920 Rule Denmark 1946 only - May 1 2:00s 1:00 S
921 Rule Denmark 1946 only - Sep 1 2:00s 0 -
922 Rule Denmark 1947 only - May 4 2:00s 1:00 S
923 Rule Denmark 1947 only - Aug 10 2:00s 0 -
924 Rule Denmark 1948 only - May 9 2:00s 1:00 S
925 Rule Denmark 1948 only - Aug 8 2:00s 0 -
927 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
928 Zone Europe/Copenhagen 0:50:20 - LMT 1890
929 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT
930 1:00 Denmark CE%sT 1942 Nov 2 2:00s
931 1:00 C-Eur CE%sT 1945 Apr 2 2:00
932 1:00 Denmark CE%sT 1980
934 Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn
938 # From Paul Eggert (2004-10-31):
939 # During World War II, Germany maintained secret manned weather stations in
940 # East Greenland and Franz Josef Land, but we don't know their time zones.
941 # My source for this is Wilhelm Dege's book mentioned under Svalbard.
943 # From Paul Eggert (2006-03-22):
944 # Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
945 # and left the EU on 1985-02-01. It therefore should have been using EU
946 # rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthåb
947 # used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
948 # rules since at least 1991. Assume EU rules since 1980.
950 # From Gwillim Law (2001-06-06), citing
951 # <http://www.statkart.no/efs/efshefter/2001/efs5-2001.pdf> (2001-03-15),
952 # and with translations corrected by Steffen Thorsen:
954 # Greenland has four local times, and the relation to UTC
955 # is according to the following time line:
957 # The military zone near Thule UTC-4
958 # Standard Greenland time UTC-3
962 # In the military area near Thule and in Danmarkshavn DST will not be
965 # From Rives McDow (2001-11-01):
967 # I correspond regularly with the Dansk Polarcenter, and wrote them at
968 # the time to clarify the situation in Thule. Unfortunately, I have
969 # not heard back from them regarding my recent letter. [But I have
970 # info from earlier correspondence.]
972 # According to the center, a very small local time zone around Thule
973 # Air Base keeps the time according to UTC-4, implementing daylight
974 # savings using North America rules, changing the time at 02:00 local time....
976 # The east coast of Greenland north of the community of Scoresbysund
977 # uses UTC in the same way as in Iceland, year round, with no dst.
978 # There are just a few stations on this coast, including the
979 # Danmarkshavn ICAO weather station mentioned in your September 29th
980 # email. The other stations are two sledge patrol stations in
981 # Mestersvig and Daneborg, the air force base at Station Nord, and the
982 # DPC research station at Zackenberg.
984 # Scoresbysund and two small villages nearby keep time UTC-1 and use
985 # the same daylight savings time period as in West Greenland (Godthåb).
987 # The rest of Greenland, including Godthåb (this area, although it
988 # includes central Greenland, is known as west Greenland), keeps time
989 # UTC-3, with daylight savings methods according to European rules.
991 # It is common procedure to use UTC 0 in the wilderness of East and
992 # North Greenland, because it is mainly Icelandic aircraft operators
993 # maintaining traffic in these areas. However, the official status of
994 # this area is that it sticks with Godthåb time. This area might be
995 # considered a dual time zone in some respects because of this.
997 # From Rives McDow (2001-11-19):
998 # I heard back from someone stationed at Thule; the time change took place
1001 # From Paul Eggert (2006-03-22):
1002 # From 1997 on the CIA map shows Danmarkshavn on GMT;
1003 # the 1995 map as like Godthåb.
1004 # For lack of better info, assume they were like Godthåb before 1996.
1005 # startkart.no says Thule does not observe DST, but this is clearly an error,
1006 # so go with Shanks & Pottenger for Thule transitions until this year.
1007 # For 2007 on assume Thule will stay in sync with US DST rules.
1009 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1010 Rule Thule 1991 1992 - Mar lastSun 2:00 1:00 D
1011 Rule Thule 1991 1992 - Sep lastSun 2:00 0 S
1012 Rule Thule 1993 2006 - Apr Sun>=1 2:00 1:00 D
1013 Rule Thule 1993 2006 - Oct lastSun 2:00 0 S
1014 Rule Thule 2007 max - Mar Sun>=8 2:00 1:00 D
1015 Rule Thule 2007 max - Nov Sun>=1 2:00 0 S
1017 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1018 Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28
1019 -3:00 - WGT 1980 Apr 6 2:00
1022 Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit
1023 -2:00 - CGT 1980 Apr 6 2:00
1024 -2:00 C-Eur CG%sT 1981 Mar 29
1026 Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk
1027 -3:00 - WGT 1980 Apr 6 2:00
1029 Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base
1033 # From Peter Ilieve (1994-10-15):
1034 # A relative in Tallinn confirms the accuracy of the data for 1989 onwards
1035 # [through 1994] and gives the legal authority for it,
1036 # a regulation of the Government of Estonia, No. 111 of 1989....
1038 # From Peter Ilieve (1996-10-28):
1039 # [IATA SSIM (1992/1996) claims that the Baltic republics switch at 01:00s,
1040 # but a relative confirms that Estonia still switches at 02:00s, writing:]
1041 # "I do not [know] exactly but there are some little different
1042 # (confusing) rules for International Air and Railway Transport Schedules
1043 # conversion in Sunday connected with end of summer time in Estonia....
1044 # A discussion is running about the summer time efficiency and effect on
1045 # human physiology. It seems that Estonia maybe will not change to
1046 # summer time next spring."
1048 # From Peter Ilieve (1998-11-04), heavily edited:
1049 # The 1998-09-22 Estonian time law
1050 # http://trip.rk.ee/cgi-bin/thw?${BASE}=akt&${OOHTML}=rtd&TA=1998&TO=1&AN=1390
1051 # refers to the Eighth Directive and cites the association agreement between
1052 # the EU and Estonia, ratified by the Estonian law (RT II 1995, 22-27, 120).
1054 # I also asked [my relative] whether they use any standard abbreviation
1055 # for their standard and summer times. He says no, they use "suveaeg"
1056 # (summer time) and "talveaeg" (winter time).
1058 # From The Baltic Times <http://www.baltictimes.com/> (1999-09-09)
1059 # via Steffen Thorsen:
1060 # This year will mark the last time Estonia shifts to summer time,
1061 # a council of the ruling coalition announced Sept. 6....
1062 # But what this could mean for Estonia's chances of joining the European
1063 # Union are still unclear. In 1994, the EU declared summer time compulsory
1064 # for all member states until 2001. Brussels has yet to decide what to do
1067 # From Mart Oruaas (2000-01-29):
1068 # Regulation No. 301 (1999-10-12) obsoletes previous regulation
1069 # No. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all
1070 # the year round. The regulation is effective 1999-11-01.
1072 # From Toomas Soome (2002-02-21):
1073 # The Estonian government has changed once again timezone politics.
1074 # Now we are using again EU rules.
1076 # From Urmet Jänes (2002-03-28):
1077 # The legislative reference is Government decree No. 84 on 2002-02-21.
1079 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1080 Zone Europe/Tallinn 1:39:00 - LMT 1880
1081 1:39:00 - TMT 1918 Feb # Tallinn Mean Time
1082 1:00 C-Eur CE%sT 1919 Jul
1083 1:39:00 - TMT 1921 May
1084 2:00 - EET 1940 Aug 6
1085 3:00 - MSK 1941 Sep 15
1086 1:00 C-Eur CE%sT 1944 Sep 22
1087 3:00 Russia MSK/MSD 1989 Mar 26 2:00s
1088 2:00 1:00 EEST 1989 Sep 24 2:00s
1089 2:00 C-Eur EE%sT 1998 Sep 22
1090 2:00 EU EE%sT 1999 Oct 31 4:00
1091 2:00 - EET 2002 Feb 21
1096 # From Hannu Strang (1994-09-25 06:03:37 UTC):
1097 # Well, here in Helsinki we're just changing from summer time to regular one,
1098 # and it's supposed to change at 4am...
1100 # From Janne Snabb (2010-07-15):
1102 # I noticed that the Finland data is not accurate for years 1981 and 1982.
1103 # During these two first trial years the DST adjustment was made one hour
1104 # earlier than in forthcoming years. Starting 1983 the adjustment was made
1105 # according to the central European standards.
1107 # This is documented in Heikki Oja: Aikakirja 2007, published by The Almanac
1108 # Office of University of Helsinki, ISBN 952-10-3221-9, available online (in
1110 # http://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf
1112 # Page 105 (56 in PDF version) has a handy table of all past daylight savings
1113 # transitions. It is easy enough to interpret without Finnish skills.
1115 # This is also confirmed by Finnish Broadcasting Company's archive at:
1116 # http://www.yle.fi/elavaarkisto/?s=s&g=1&ag=5&t=&a=3401
1118 # The news clip from 1981 says that "the time between 2 and 3 o'clock does not
1121 # From Konstantin Hyppönen (2014-06-13):
1122 # [Heikki Oja's book Aikakirja 2013]
1123 # http://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf
1124 # pages 104-105, including a scan from a newspaper published on Apr 2 1942
1125 # say that ... [o]n Apr 2 1942, 24 o'clock (which means Apr 3 1942,
1126 # 00:00), clocks were moved one hour forward. The newspaper
1127 # mentions "on the night from Thursday to Friday"....
1128 # On Oct 4 1942, clocks were moved at 1:00 one hour backwards.
1130 # From Paul Eggert (2014-06-14):
1131 # Go with Oja over Shanks.
1133 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1134 Rule Finland 1942 only - Apr 2 24:00 1:00 S
1135 Rule Finland 1942 only - Oct 4 1:00 0 -
1136 Rule Finland 1981 1982 - Mar lastSun 2:00 1:00 S
1137 Rule Finland 1981 1982 - Sep lastSun 3:00 0 -
1139 # Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document);
1142 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1143 Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31
1144 1:39:49 - HMT 1921 May # Helsinki Mean Time
1145 2:00 Finland EE%sT 1983
1149 Link Europe/Helsinki Europe/Mariehamn
1154 # From Ciro Discepolo (2000-12-20):
1156 # Henri Le Corre, Régimes horaires pour le monde entier, Éditions
1157 # Traditionnelles - Paris 2 books, 1993
1159 # Gabriel, Traité de l'heure dans le monde, Guy Trédaniel,
1162 # Françoise Gauquelin, Problèmes de l'heure résolus en astrologie,
1163 # Guy Trédaniel, Paris 1987
1167 # Shank & Pottenger seem to use '24:00' ambiguously; resolve it with Whitman.
1168 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1169 Rule France 1916 only - Jun 14 23:00s 1:00 S
1170 Rule France 1916 1919 - Oct Sun>=1 23:00s 0 -
1171 Rule France 1917 only - Mar 24 23:00s 1:00 S
1172 Rule France 1918 only - Mar 9 23:00s 1:00 S
1173 Rule France 1919 only - Mar 1 23:00s 1:00 S
1174 Rule France 1920 only - Feb 14 23:00s 1:00 S
1175 Rule France 1920 only - Oct 23 23:00s 0 -
1176 Rule France 1921 only - Mar 14 23:00s 1:00 S
1177 Rule France 1921 only - Oct 25 23:00s 0 -
1178 Rule France 1922 only - Mar 25 23:00s 1:00 S
1179 # DSH writes that a law of 1923-05-24 specified 3rd Sat in Apr at 23:00 to 1st
1180 # Sat in Oct at 24:00; and that in 1930, because of Easter, the transitions
1181 # were Apr 12 and Oct 5. Go with Shanks & Pottenger.
1182 Rule France 1922 1938 - Oct Sat>=1 23:00s 0 -
1183 Rule France 1923 only - May 26 23:00s 1:00 S
1184 Rule France 1924 only - Mar 29 23:00s 1:00 S
1185 Rule France 1925 only - Apr 4 23:00s 1:00 S
1186 Rule France 1926 only - Apr 17 23:00s 1:00 S
1187 Rule France 1927 only - Apr 9 23:00s 1:00 S
1188 Rule France 1928 only - Apr 14 23:00s 1:00 S
1189 Rule France 1929 only - Apr 20 23:00s 1:00 S
1190 Rule France 1930 only - Apr 12 23:00s 1:00 S
1191 Rule France 1931 only - Apr 18 23:00s 1:00 S
1192 Rule France 1932 only - Apr 2 23:00s 1:00 S
1193 Rule France 1933 only - Mar 25 23:00s 1:00 S
1194 Rule France 1934 only - Apr 7 23:00s 1:00 S
1195 Rule France 1935 only - Mar 30 23:00s 1:00 S
1196 Rule France 1936 only - Apr 18 23:00s 1:00 S
1197 Rule France 1937 only - Apr 3 23:00s 1:00 S
1198 Rule France 1938 only - Mar 26 23:00s 1:00 S
1199 Rule France 1939 only - Apr 15 23:00s 1:00 S
1200 Rule France 1939 only - Nov 18 23:00s 0 -
1201 Rule France 1940 only - Feb 25 2:00 1:00 S
1202 # The French rules for 1941-1944 were not used in Paris, but Shanks & Pottenger
1203 # write that they were used in Monaco and in many French locations.
1204 # Le Corre writes that the upper limit of the free zone was Arnéguy, Orthez,
1205 # Mont-de-Marsan, Bazas, Langon, Lamothe-Montravel, Marœuil, La
1206 # Rochefoucauld, Champagne-Mouton, La Roche-Posay, La Haye-Descartes,
1207 # Loches, Montrichard, Vierzon, Bourges, Moulins, Digoin,
1208 # Paray-le-Monial, Montceau-les-Mines, Chalon-sur-Saône, Arbois,
1209 # Dole, Morez, St-Claude, and Collonges (Haute-Savoie).
1210 Rule France 1941 only - May 5 0:00 2:00 M # Midsummer
1211 # Shanks & Pottenger say this transition occurred at Oct 6 1:00,
1212 # but go with Denis Excoffier (1997-12-12),
1213 # who quotes the Ephémérides astronomiques for 1998 from Bureau des Longitudes
1214 # as saying 5/10/41 22hUT.
1215 Rule France 1941 only - Oct 6 0:00 1:00 S
1216 Rule France 1942 only - Mar 9 0:00 2:00 M
1217 Rule France 1942 only - Nov 2 3:00 1:00 S
1218 Rule France 1943 only - Mar 29 2:00 2:00 M
1219 Rule France 1943 only - Oct 4 3:00 1:00 S
1220 Rule France 1944 only - Apr 3 2:00 2:00 M
1221 Rule France 1944 only - Oct 8 1:00 1:00 S
1222 Rule France 1945 only - Apr 2 2:00 2:00 M
1223 Rule France 1945 only - Sep 16 3:00 0 -
1224 # Shanks & Pottenger give Mar 28 2:00 and Sep 26 3:00;
1225 # go with Excoffier's 28/3/76 0hUT and 25/9/76 23hUT.
1226 Rule France 1976 only - Mar 28 1:00 1:00 S
1227 Rule France 1976 only - Sep 26 1:00 0 -
1228 # Shanks & Pottenger give 0:09:20 for Paris Mean Time, and Whitman 0:09:05,
1229 # but Howse quotes the actual French legislation as saying 0:09:21.
1230 # Go with Howse. Howse writes that the time in France was officially based
1231 # on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
1232 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1233 Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
1234 0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT
1235 # Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre.
1236 0:00 France WE%sT 1940 Jun 14 23:00
1237 # Le Corre says Paris stuck with occupied-France time after the liberation;
1238 # go with Shanks & Pottenger.
1239 1:00 C-Eur CE%sT 1944 Aug 25
1240 0:00 France WE%sT 1945 Sep 16 3:00
1241 1:00 France CE%sT 1977
1246 # From Markus Kuhn (1998-09-29):
1247 # The German time zone web site by the Physikalisch-Technische
1248 # Bundesanstalt contains DST information back to 1916.
1249 # [See tz-link.htm for the URL.]
1251 # From Jörg Schilling (2002-10-23):
1252 # In 1945, Berlin was switched to Moscow Summer time (GMT+4) by
1253 # http://www.dhm.de/lemo/html/biografien/BersarinNikolai/
1254 # General [Nikolai] Bersarin.
1256 # From Paul Eggert (2003-03-08):
1257 # http://www.parlament-berlin.de/pds-fraktion.nsf/727459127c8b66ee8525662300459099/defc77cb784f180ac1256c2b0030274b/$FILE/bersarint.pdf
1258 # says that Bersarin issued an order to use Moscow time on May 20.
1259 # However, Moscow did not observe daylight saving in 1945, so
1260 # this was equivalent to CEMT (GMT+3), not GMT+4.
1263 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1264 Rule Germany 1946 only - Apr 14 2:00s 1:00 S
1265 Rule Germany 1946 only - Oct 7 2:00s 0 -
1266 Rule Germany 1947 1949 - Oct Sun>=1 2:00s 0 -
1267 # http://www.ptb.de/de/org/4/44/441/salt.htm says the following transition
1268 # occurred at 3:00 MEZ, not the 2:00 MEZ given in Shanks & Pottenger.
1270 Rule Germany 1947 only - Apr 6 3:00s 1:00 S
1271 Rule Germany 1947 only - May 11 2:00s 2:00 M
1272 Rule Germany 1947 only - Jun 29 3:00 1:00 S
1273 Rule Germany 1948 only - Apr 18 2:00s 1:00 S
1274 Rule Germany 1949 only - Apr 10 2:00s 1:00 S
1276 Rule SovietZone 1945 only - May 24 2:00 2:00 M # Midsummer
1277 Rule SovietZone 1945 only - Sep 24 3:00 1:00 S
1278 Rule SovietZone 1945 only - Nov 18 2:00s 0 -
1280 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1281 Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
1282 1:00 C-Eur CE%sT 1945 May 24 2:00
1283 1:00 SovietZone CE%sT 1946
1284 1:00 Germany CE%sT 1980
1287 # From Tobias Conradi (2011-09-12):
1288 # Büsingen <http://www.buesingen.de>, surrounded by the Swiss canton
1289 # Schaffhausen, did not start observing DST in 1980 as the rest of DE
1290 # (West Germany at that time) and DD (East Germany at that time) did.
1291 # DD merged into DE, the area is currently covered by code DE in ISO 3166-1,
1292 # which in turn is covered by the zone Europe/Berlin.
1294 # Source for the time in Büsingen 1980:
1295 # http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3
1297 # From Arthur David Olson (2012-03-03):
1298 # Büsingen and Zurich have shared clocks since 1970.
1300 Link Europe/Zurich Europe/Busingen
1303 # Please see the "asia" file for Asia/Tbilisi.
1304 # Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni)
1305 # is in Europe. Our reference location Tbilisi is in the Asian part.
1308 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1309 Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s
1310 0:00 GB-Eire %s 1957 Apr 14 2:00
1315 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1316 # Whitman gives 1932 Jul 5 - Nov 1; go with Shanks & Pottenger.
1317 Rule Greece 1932 only - Jul 7 0:00 1:00 S
1318 Rule Greece 1932 only - Sep 1 0:00 0 -
1319 # Whitman gives 1941 Apr 25 - ?; go with Shanks & Pottenger.
1320 Rule Greece 1941 only - Apr 7 0:00 1:00 S
1321 # Whitman gives 1942 Feb 2 - ?; go with Shanks & Pottenger.
1322 Rule Greece 1942 only - Nov 2 3:00 0 -
1323 Rule Greece 1943 only - Mar 30 0:00 1:00 S
1324 Rule Greece 1943 only - Oct 4 0:00 0 -
1325 # Whitman gives 1944 Oct 3 - Oct 31; go with Shanks & Pottenger.
1326 Rule Greece 1952 only - Jul 1 0:00 1:00 S
1327 Rule Greece 1952 only - Nov 2 0:00 0 -
1328 Rule Greece 1975 only - Apr 12 0:00s 1:00 S
1329 Rule Greece 1975 only - Nov 26 0:00s 0 -
1330 Rule Greece 1976 only - Apr 11 2:00s 1:00 S
1331 Rule Greece 1976 only - Oct 10 2:00s 0 -
1332 Rule Greece 1977 1978 - Apr Sun>=1 2:00s 1:00 S
1333 Rule Greece 1977 only - Sep 26 2:00s 0 -
1334 Rule Greece 1978 only - Sep 24 4:00 0 -
1335 Rule Greece 1979 only - Apr 1 9:00 1:00 S
1336 Rule Greece 1979 only - Sep 29 2:00 0 -
1337 Rule Greece 1980 only - Apr 1 0:00 1:00 S
1338 Rule Greece 1980 only - Sep 28 0:00 0 -
1339 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1340 Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
1341 1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT
1342 2:00 Greece EE%sT 1941 Apr 30
1343 1:00 Greece CE%sT 1944 Apr 4
1344 2:00 Greece EE%sT 1981
1345 # Shanks & Pottenger say it switched to C-Eur in 1981;
1346 # go with EU instead, since Greece joined it on Jan 1.
1350 # From Paul Eggert (2014-07-15):
1351 # Dates for 1916-1945 are taken from:
1352 # Oross A. Jelen a múlt jövője: a nyári időszámítás Magyarországon 1916-1945.
1353 # National Archives of Hungary (2012-10-29).
1354 # http://mnl.gov.hu/a_het_dokumentuma/a_nyari_idoszamitas_magyarorszagon_19161945.html
1355 # This source does not always give times, which are taken from Shanks
1356 # & Pottenger (which disagree about the dates).
1357 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1358 Rule Hungary 1918 only - Apr 1 3:00 1:00 S
1359 Rule Hungary 1918 only - Sep 16 3:00 0 -
1360 Rule Hungary 1919 only - Apr 15 3:00 1:00 S
1361 Rule Hungary 1919 only - Nov 24 3:00 0 -
1362 Rule Hungary 1945 only - May 1 23:00 1:00 S
1363 Rule Hungary 1945 only - Nov 1 0:00 0 -
1364 Rule Hungary 1946 only - Mar 31 2:00s 1:00 S
1365 Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 -
1366 Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 S
1367 Rule Hungary 1950 only - Apr 17 2:00s 1:00 S
1368 Rule Hungary 1950 only - Oct 23 2:00s 0 -
1369 Rule Hungary 1954 1955 - May 23 0:00 1:00 S
1370 Rule Hungary 1954 1955 - Oct 3 0:00 0 -
1371 Rule Hungary 1956 only - Jun Sun>=1 0:00 1:00 S
1372 Rule Hungary 1956 only - Sep lastSun 0:00 0 -
1373 Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 S
1374 Rule Hungary 1957 only - Sep lastSun 3:00 0 -
1375 Rule Hungary 1980 only - Apr 6 1:00 1:00 S
1376 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1377 Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1378 1:00 C-Eur CE%sT 1918
1379 1:00 Hungary CE%sT 1941 Apr 8
1380 1:00 C-Eur CE%sT 1945
1381 1:00 Hungary CE%sT 1980 Sep 28 2:00s
1386 # From Adam David (1993-11-06):
1387 # The name of the timezone in Iceland for system / mail / news purposes is GMT.
1390 # This material is paraphrased from the 1988 edition of the University of
1393 # From January 1st, 1908 the whole of Iceland was standardised at 1 hour
1394 # behind GMT. Previously, local mean solar time was used in different parts
1395 # of Iceland, the almanak had been based on Reykjavik mean solar time which
1396 # was 1 hour and 28 minutes behind GMT.
1398 # "first day of winter" referred to [below] means the first day of the 26 weeks
1399 # of winter, according to the old icelandic calendar that dates back to the
1400 # time the norsemen first settled Iceland. The first day of winter is always
1401 # Saturday, but is not dependent on the Julian or Gregorian calendars.
1404 # I have a reference from the Oxford Icelandic-English dictionary for the
1405 # beginning of winter, which ties it to the ecclesiastical calendar (and thus
1406 # to the julian/gregorian calendar) over the period in question.
1407 # the winter begins on the Saturday next before St. Luke's day
1408 # (old style), or on St. Luke's day, if a Saturday.
1409 # St. Luke's day ought to be traceable from ecclesiastical sources. "old style"
1410 # might be a reference to the Julian calendar as opposed to Gregorian, or it
1411 # might mean something else (???).
1413 # From Paul Eggert (2014-11-22):
1414 # The information below is taken from the 1988 Almanak; see
1415 # http://www.almanak.hi.is/klukkan.html
1417 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1418 Rule Iceland 1917 1919 - Feb 19 23:00 1:00 S
1419 Rule Iceland 1917 only - Oct 21 1:00 0 -
1420 Rule Iceland 1918 1919 - Nov 16 1:00 0 -
1421 Rule Iceland 1921 only - Mar 19 23:00 1:00 S
1422 Rule Iceland 1921 only - Jun 23 1:00 0 -
1423 Rule Iceland 1939 only - Apr 29 23:00 1:00 S
1424 Rule Iceland 1939 only - Oct 29 2:00 0 -
1425 Rule Iceland 1940 only - Feb 25 2:00 1:00 S
1426 Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 -
1427 Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 S
1428 # 1943-1946 - first Sunday in March until first Sunday in winter
1429 Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 S
1430 Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 -
1431 # 1947-1967 - first Sunday in April until first Sunday in winter
1432 Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 S
1433 # 1949 and 1967 Oct transitions delayed by 1 week
1434 Rule Iceland 1949 only - Oct 30 1:00s 0 -
1435 Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 -
1436 Rule Iceland 1967 only - Oct 29 1:00s 0 -
1437 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1438 Zone Atlantic/Reykjavik -1:28 - LMT 1908
1439 -1:00 Iceland IS%sT 1968 Apr 7 1:00s
1444 # From Paul Eggert (2001-03-06):
1445 # Sicily and Sardinia each had their own time zones from 1866 to 1893,
1446 # called Palermo Time (+00:53:28) and Cagliari Time (+00:36:32).
1447 # During World War II, German-controlled Italy used German time.
1448 # But these events all occurred before the 1970 cutoff,
1449 # so record only the time in Rome.
1451 # From Paul Eggert (2006-03-22):
1452 # For Italian DST we have three sources: Shanks & Pottenger, Whitman, and
1454 # Day-light Saving Time in Italy (2006-02-03)
1455 # http://toi.iriti.cnr.it/uk/ienitlt.html
1456 # ('FP' below), taken from an Italian National Electrotechnical Institute
1457 # publication. When the three sources disagree, guess who's right, as follows:
1459 # year FP Shanks&P. (S) Whitman (W) Go with:
1460 # 1916 06-03 06-03 24:00 06-03 00:00 FP & W
1461 # 09-30 09-30 24:00 09-30 01:00 FP; guess 24:00s
1462 # 1917 04-01 03-31 24:00 03-31 00:00 FP & S
1463 # 09-30 09-29 24:00 09-30 01:00 FP & W
1464 # 1918 03-09 03-09 24:00 03-09 00:00 FP & S
1465 # 10-06 10-05 24:00 10-06 01:00 FP & W
1466 # 1919 03-01 03-01 24:00 03-01 00:00 FP & S
1467 # 10-04 10-04 24:00 10-04 01:00 FP; guess 24:00s
1468 # 1920 03-20 03-20 24:00 03-20 00:00 FP & S
1469 # 09-18 09-18 24:00 10-01 01:00 FP; guess 24:00s
1470 # 1944 04-02 04-03 02:00 S (see C-Eur)
1471 # 09-16 10-02 03:00 FP; guess 24:00s
1472 # 1945 09-14 09-16 24:00 FP; guess 24:00s
1473 # 1970 05-21 05-31 00:00 S
1474 # 09-20 09-27 00:00 S
1476 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1477 Rule Italy 1916 only - Jun 3 0:00s 1:00 S
1478 Rule Italy 1916 only - Oct 1 0:00s 0 -
1479 Rule Italy 1917 only - Apr 1 0:00s 1:00 S
1480 Rule Italy 1917 only - Sep 30 0:00s 0 -
1481 Rule Italy 1918 only - Mar 10 0:00s 1:00 S
1482 Rule Italy 1918 1919 - Oct Sun>=1 0:00s 0 -
1483 Rule Italy 1919 only - Mar 2 0:00s 1:00 S
1484 Rule Italy 1920 only - Mar 21 0:00s 1:00 S
1485 Rule Italy 1920 only - Sep 19 0:00s 0 -
1486 Rule Italy 1940 only - Jun 15 0:00s 1:00 S
1487 Rule Italy 1944 only - Sep 17 0:00s 0 -
1488 Rule Italy 1945 only - Apr 2 2:00 1:00 S
1489 Rule Italy 1945 only - Sep 15 0:00s 0 -
1490 Rule Italy 1946 only - Mar 17 2:00s 1:00 S
1491 Rule Italy 1946 only - Oct 6 2:00s 0 -
1492 Rule Italy 1947 only - Mar 16 0:00s 1:00 S
1493 Rule Italy 1947 only - Oct 5 0:00s 0 -
1494 Rule Italy 1948 only - Feb 29 2:00s 1:00 S
1495 Rule Italy 1948 only - Oct 3 2:00s 0 -
1496 Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 S
1497 Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 -
1498 Rule Italy 1969 only - Jun 1 0:00 1:00 S
1499 Rule Italy 1970 only - May 31 0:00 1:00 S
1500 Rule Italy 1970 only - Sep lastSun 0:00 0 -
1501 Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 S
1502 Rule Italy 1971 only - Sep lastSun 1:00 0 -
1503 Rule Italy 1972 only - Oct 1 0:00 0 -
1504 Rule Italy 1973 only - Jun 3 0:00 1:00 S
1505 Rule Italy 1973 1974 - Sep lastSun 0:00 0 -
1506 Rule Italy 1974 only - May 26 0:00 1:00 S
1507 Rule Italy 1975 only - Jun 1 0:00s 1:00 S
1508 Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
1509 Rule Italy 1976 only - May 30 0:00s 1:00 S
1510 Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S
1511 Rule Italy 1978 only - Oct 1 0:00s 0 -
1512 Rule Italy 1979 only - Sep 30 0:00s 0 -
1513 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1514 Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22
1515 0:49:56 - RMT 1893 Nov 1 0:00s # Rome Mean
1516 1:00 Italy CE%sT 1942 Nov 2 2:00s
1517 1:00 C-Eur CE%sT 1944 Jul
1518 1:00 Italy CE%sT 1980
1521 Link Europe/Rome Europe/Vatican
1522 Link Europe/Rome Europe/San_Marino
1526 # From Liene Kanepe (1998-09-17):
1528 # I asked about this matter Scientific Secretary of the Institute of Astronomy
1529 # of The University of Latvia Dr. paed Mr. Ilgonis Vilks. I also searched the
1530 # correct data in juridical acts and I found some juridical documents about
1531 # changes in the counting of time in Latvia from 1981....
1533 # Act No. 35 of the Council of Ministers of Latvian SSR of 1981-01-22 ...
1534 # according to the Act No. 925 of the Council of Ministers of USSR of 1980-10-24
1535 # ...: all year round the time of 2nd time zone + 1 hour, in addition turning
1536 # the hands of the clock 1 hour forward on 1 April at 00:00 (GMT 31 March 21:00)
1537 # and 1 hour backward on the 1 October at 00:00 (GMT 30 September 20:00).
1539 # Act No. 592 of the Council of Ministers of Latvian SSR of 1984-09-24 ...
1540 # according to the Act No. 967 of the Council of Ministers of USSR of 1984-09-13
1541 # ...: all year round the time of 2nd time zone + 1 hour, in addition turning
1542 # the hands of the clock 1 hour forward on the last Sunday of March at 02:00
1543 # (GMT 23:00 on the previous day) and 1 hour backward on the last Sunday of
1544 # September at 03:00 (GMT 23:00 on the previous day).
1546 # Act No. 81 of the Council of Ministers of Latvian SSR of 1989-03-22 ...
1547 # according to the Act No. 227 of the Council of Ministers of USSR of 1989-03-14
1548 # ...: since the last Sunday of March 1989 in Lithuanian SSR, Latvian SSR,
1549 # Estonian SSR and Kaliningrad region of Russian Federation all year round the
1550 # time of 2nd time zone (Moscow time minus one hour). On the territory of Latvia
1551 # transition to summer time is performed on the last Sunday of March at 02:00
1552 # (GMT 00:00), turning the hands of the clock 1 hour forward. The end of
1553 # daylight saving time is performed on the last Sunday of September at 03:00
1554 # (GMT 00:00), turning the hands of the clock 1 hour backward. Exception is
1555 # 1989-03-26, when we must not turn the hands of the clock....
1557 # The Regulations of the Cabinet of Ministers of the Republic of Latvia of
1558 # 1997-01-21 on transition to Summer time ... established the same order of
1559 # daylight savings time settings as in the States of the European Union.
1561 # From Andrei Ivanov (2000-03-06):
1562 # This year Latvia will not switch to Daylight Savings Time (as specified in
1563 # The Regulations of the Cabinet of Ministers of the Rep. of Latvia of
1564 # 29-Feb-2000 (No. 79) <http://www.lv-laiks.lv/wwwraksti/2000/071072/vd4.htm>,
1565 # in Latvian for subscribers only).
1567 # From RFE/RL Newsline
1568 # http://www.rferl.org/newsline/2001/01/3-CEE/cee-030101.html
1569 # (2001-01-03), noted after a heads-up by Rives McDow:
1570 # The Latvian government on 2 January decided that the country will
1571 # institute daylight-saving time this spring, LETA reported.
1572 # Last February the three Baltic states decided not to turn back their
1573 # clocks one hour in the spring....
1574 # Minister of Economy Aigars Kalvītis noted that Latvia had too few
1575 # daylight hours and thus decided to comply with a draft European
1576 # Commission directive that provides for instituting daylight-saving
1577 # time in EU countries between 2002 and 2006. The Latvian government
1578 # urged Lithuania and Estonia to adopt a similar time policy, but it
1579 # appears that they will not do so....
1581 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1582 Rule Latvia 1989 1996 - Mar lastSun 2:00s 1:00 S
1583 Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 -
1585 # Milne 1899 says Riga was 1:36:28 (Polytechnique House time).
1586 # Byalokoz 1919 says Latvia was 1:36:34.
1589 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1590 Zone Europe/Riga 1:36:34 - LMT 1880
1591 1:36:34 - RMT 1918 Apr 15 2:00 # Riga MT
1592 1:36:34 1:00 LST 1918 Sep 16 3:00 # Latvian ST
1593 1:36:34 - RMT 1919 Apr 1 2:00
1594 1:36:34 1:00 LST 1919 May 22 3:00
1595 1:36:34 - RMT 1926 May 11
1596 2:00 - EET 1940 Aug 5
1598 1:00 C-Eur CE%sT 1944 Oct 13
1599 3:00 Russia MSK/MSD 1989 Mar lastSun 2:00s
1600 2:00 1:00 EEST 1989 Sep lastSun 2:00s
1601 2:00 Latvia EE%sT 1997 Jan 21
1602 2:00 EU EE%sT 2000 Feb 29
1603 2:00 - EET 2001 Jan 2
1608 # From Paul Eggert (2013-09-09):
1609 # Shanks & Pottenger say Vaduz is like Zurich.
1611 # From Alois Treindl (2013-09-18):
1612 # http://www.eliechtensteinensia.li/LIJ/1978/1938-1978/1941.pdf
1613 # ... confirms on p. 6 that Liechtenstein followed Switzerland in 1941 and 1942.
1614 # I ... translate only the last two paragraphs:
1615 # ... during second world war, in the years 1941 and 1942, Liechtenstein
1616 # introduced daylight saving time, adapting to Switzerland. From 1943 on
1617 # central European time was in force throughout the year.
1618 # From a report of the duke's government to the high council,
1619 # regarding the introduction of a time law, of 31 May 1977.
1621 Link Europe/Zurich Europe/Vaduz
1626 # From Paul Eggert (1996-11-22):
1627 # IATA SSIM (1992/1996) says Lithuania uses W-Eur rules, but since it is
1628 # known to be wrong about Estonia and Latvia, assume it's wrong here too.
1630 # From Marius Gedminas (1998-08-07):
1631 # I would like to inform that in this year Lithuanian time zone
1632 # (Europe/Vilnius) was changed.
1634 # From ELTA No. 972 (2582) (1999-09-29) <http://www.elta.lt/>,
1635 # via Steffen Thorsen:
1636 # Lithuania has shifted back to the second time zone (GMT plus two hours)
1637 # to be valid here starting from October 31,
1638 # as decided by the national government on Wednesday....
1639 # The Lithuanian government also announced plans to consider a
1640 # motion to give up shifting to summer time in spring, as it was
1641 # already done by Estonia.
1643 # From the Fact File, Lithuanian State Department of Tourism
1644 # <http://www.tourism.lt/informa/ff.htm> (2000-03-27):
1645 # Local time is GMT+2 hours ..., no daylight saving.
1647 # From a user via Klaus Marten (2003-02-07):
1648 # As a candidate for membership of the European Union, Lithuania will
1649 # observe Summer Time in 2003, changing its clocks at the times laid
1650 # down in EU Directive 2000/84 of 19.I.01 (i.e. at the same times as its
1651 # neighbour Latvia). The text of the Lithuanian government Order of
1652 # 7.XI.02 to this effect can be found at
1653 # http://www.lrvk.lt/nut/11/n1749.htm
1656 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1657 Zone Europe/Vilnius 1:41:16 - LMT 1880
1658 1:24:00 - WMT 1917 # Warsaw Mean Time
1659 1:35:36 - KMT 1919 Oct 10 # Kaunas Mean Time
1660 1:00 - CET 1920 Jul 12
1661 2:00 - EET 1920 Oct 9
1662 1:00 - CET 1940 Aug 3
1663 3:00 - MSK 1941 Jun 24
1664 1:00 C-Eur CE%sT 1944 Aug
1665 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
1666 2:00 1:00 EEST 1991 Sep 29 2:00s
1667 2:00 C-Eur EE%sT 1998
1668 2:00 - EET 1998 Mar 29 1:00u
1669 1:00 EU CE%sT 1999 Oct 31 1:00u
1670 2:00 - EET 2003 Jan 1
1674 # Whitman disagrees with most of these dates in minor ways;
1675 # go with Shanks & Pottenger.
1676 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1677 Rule Lux 1916 only - May 14 23:00 1:00 S
1678 Rule Lux 1916 only - Oct 1 1:00 0 -
1679 Rule Lux 1917 only - Apr 28 23:00 1:00 S
1680 Rule Lux 1917 only - Sep 17 1:00 0 -
1681 Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S
1682 Rule Lux 1918 only - Sep Mon>=15 2:00s 0 -
1683 Rule Lux 1919 only - Mar 1 23:00 1:00 S
1684 Rule Lux 1919 only - Oct 5 3:00 0 -
1685 Rule Lux 1920 only - Feb 14 23:00 1:00 S
1686 Rule Lux 1920 only - Oct 24 2:00 0 -
1687 Rule Lux 1921 only - Mar 14 23:00 1:00 S
1688 Rule Lux 1921 only - Oct 26 2:00 0 -
1689 Rule Lux 1922 only - Mar 25 23:00 1:00 S
1690 Rule Lux 1922 only - Oct Sun>=2 1:00 0 -
1691 Rule Lux 1923 only - Apr 21 23:00 1:00 S
1692 Rule Lux 1923 only - Oct Sun>=2 2:00 0 -
1693 Rule Lux 1924 only - Mar 29 23:00 1:00 S
1694 Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 -
1695 Rule Lux 1925 only - Apr 5 23:00 1:00 S
1696 Rule Lux 1926 only - Apr 17 23:00 1:00 S
1697 Rule Lux 1927 only - Apr 9 23:00 1:00 S
1698 Rule Lux 1928 only - Apr 14 23:00 1:00 S
1699 Rule Lux 1929 only - Apr 20 23:00 1:00 S
1700 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1701 Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
1702 1:00 Lux CE%sT 1918 Nov 25
1703 0:00 Lux WE%sT 1929 Oct 6 2:00s
1704 0:00 Belgium WE%sT 1940 May 14 3:00
1705 1:00 C-Eur WE%sT 1944 Sep 18 3:00
1706 1:00 Belgium CE%sT 1977
1710 # See Europe/Belgrade.
1713 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1714 Rule Malta 1973 only - Mar 31 0:00s 1:00 S
1715 Rule Malta 1973 only - Sep 29 0:00s 0 -
1716 Rule Malta 1974 only - Apr 21 0:00s 1:00 S
1717 Rule Malta 1974 only - Sep 16 0:00s 0 -
1718 Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S
1719 Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
1720 Rule Malta 1980 only - Mar 31 2:00 1:00 S
1721 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1722 Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta
1723 1:00 Italy CE%sT 1942 Nov 2 2:00s
1724 1:00 C-Eur CE%sT 1945 Apr 2 2:00s
1725 1:00 Italy CE%sT 1973 Mar 31
1726 1:00 Malta CE%sT 1981
1731 # From Paul Eggert (2006-03-22):
1732 # A previous version of this database followed Shanks & Pottenger, who write
1733 # that Tiraspol switched to Moscow time on 1992-01-19 at 02:00.
1734 # However, this is most likely an error, as Moldova declared independence
1735 # on 1991-08-27 (the 1992-01-19 date is that of a Russian decree).
1736 # In early 1992 there was large-scale interethnic violence in the area
1737 # and it's possible that some Russophones continued to observe Moscow time.
1738 # But [two people] separately reported via
1739 # Jesper Nørgaard that as of 2001-01-24 Tiraspol was like Chisinau.
1740 # The Tiraspol entry has therefore been removed for now.
1742 # From Alexander Krivenyshev (2011-10-17):
1743 # Pridnestrovian Moldavian Republic (PMR, also known as
1744 # "Pridnestrovie") has abolished seasonal clock change (no transition
1745 # to the Winter Time).
1747 # News (in Russian):
1748 # http://www.kyivpost.ua/russia/news/pridnestrove-otkazalos-ot-perehoda-na-zimnee-vremya-30954.html
1749 # http://www.allmoldova.com/moldova-news/1249064116.html
1751 # The substance of this change (reinstatement of the Tiraspol entry)
1752 # is from a patch from Petr Machata (2011-10-17)
1754 # From Tim Parenti (2011-10-19)
1755 # In addition, being situated at +4651+2938 would give Tiraspol
1756 # a pre-1880 LMT offset of 1:58:32.
1758 # (which agrees with the earlier entry that had been removed)
1760 # From Alexander Krivenyshev (2011-10-26)
1761 # NO need to divide Moldova into two timezones at this point.
1762 # As of today, Transnistria (Pridnestrovie)- Tiraspol reversed its own
1763 # decision to abolish DST this winter.
1764 # Following Moldova and neighboring Ukraine- Transnistria (Pridnestrovie)-
1765 # Tiraspol will go back to winter time on October 30, 2011.
1766 # News from Moldova (in russian):
1767 # http://ru.publika.md/link_317061.html
1769 # From Roman Tudos (2015-07-02):
1770 # http://lex.justice.md/index.php?action=view&view=doc&lang=1&id=355077
1771 # From Paul Eggert (2015-07-01):
1772 # The abovementioned official link to IGO1445-868/2014 states that
1773 # 2014-10-26's fallback transition occurred at 03:00 local time. Also,
1774 # http://www.trm.md/en/social/la-30-martie-vom-trece-la-ora-de-vara
1775 # says the 2014-03-30 spring-forward transition was at 02:00 local time.
1776 # Guess that since 1997 Moldova has switched one hour before the EU.
1778 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1779 Rule Moldova 1997 max - Mar lastSun 2:00 1:00 S
1780 Rule Moldova 1997 max - Oct lastSun 3:00 0 -
1782 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1783 Zone Europe/Chisinau 1:55:20 - LMT 1880
1784 1:55 - CMT 1918 Feb 15 # Chisinau MT
1785 1:44:24 - BMT 1931 Jul 24 # Bucharest MT
1786 2:00 Romania EE%sT 1940 Aug 15
1787 2:00 1:00 EEST 1941 Jul 17
1788 1:00 C-Eur CE%sT 1944 Aug 24
1789 3:00 Russia MSK/MSD 1990
1790 3:00 - MSK 1990 May 6
1792 2:00 Russia EE%sT 1992
1793 2:00 E-Eur EE%sT 1997
1794 # See Romania commentary for the guessed 1997 transition to EU rules.
1798 # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
1799 # more precise 0:09:21.
1800 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1801 Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
1802 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
1803 0:00 France WE%sT 1945 Sep 16 3:00
1804 1:00 France CE%sT 1977
1808 # See Europe/Belgrade.
1812 # Howse writes that the Netherlands' railways used GMT between 1892 and 1940,
1813 # but for other purposes the Netherlands used Amsterdam mean time.
1815 # However, Robert H. van Gent writes (2001-04-01):
1816 # Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00
1817 # Amsterdam mean time) onwards, the whole of the Netherlands (including
1818 # the Dutch railways) was required by law to observe Amsterdam mean time
1819 # (19 minutes 32.13 seconds ahead of GMT). This had already been the
1820 # common practice (except for the railways) for many decades but it was
1821 # not until 1909 when the Dutch government finally defined this by law.
1822 # On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and
1823 # was generally known as Dutch Time ("Nederlandse Tijd").
1826 # 1892-05-01 was the date when the Dutch railways were by law required to
1827 # observe GMT while the remainder of the Netherlands adhered to the common
1828 # practice of following Amsterdam mean time.
1831 # In 1835 the authorities of the province of North Holland requested the
1832 # municipal authorities of the towns and cities in the province to observe
1833 # Amsterdam mean time but I do not know in how many cases this request was
1834 # actually followed.
1836 # From 1852 onwards the Dutch telegraph offices were by law required to
1837 # observe Amsterdam mean time. As the time signals from the observatory of
1838 # Leiden were also distributed by the telegraph system, I assume that most
1839 # places linked up with the telegraph (and railway) system automatically
1840 # adopted Amsterdam mean time.
1842 # Although the early Dutch railway companies initially observed a variety
1843 # of times, most of them had adopted Amsterdam mean time by 1858 but it
1844 # was not until 1866 when they were all required by law to observe
1845 # Amsterdam mean time.
1847 # The data entries before 1945 are taken from
1848 # http://www.phys.uu.nl/~vgent/wettijd/wettijd.htm
1850 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1851 Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time
1852 Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time
1853 Rule Neth 1917 only - Apr 16 2:00s 1:00 NST
1854 Rule Neth 1917 only - Sep 17 2:00s 0 AMT
1855 Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST
1856 Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT
1857 Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST
1858 Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT
1859 Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST
1860 Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST
1861 Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST
1862 # From 1926 through 1939 DST began 05-15, except that it was delayed by a week
1863 # in years when 05-15 fell in the Pentecost weekend.
1864 Rule Neth 1926 1931 - May 15 2:00s 1:00 NST
1865 Rule Neth 1932 only - May 22 2:00s 1:00 NST
1866 Rule Neth 1933 1936 - May 15 2:00s 1:00 NST
1867 Rule Neth 1937 only - May 22 2:00s 1:00 NST
1868 Rule Neth 1937 only - Jul 1 0:00 1:00 S
1869 Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 -
1870 Rule Neth 1938 1939 - May 15 2:00s 1:00 S
1871 Rule Neth 1945 only - Apr 2 2:00s 1:00 S
1872 Rule Neth 1945 only - Sep 16 2:00s 0 -
1874 # Amsterdam Mean Time was +00:19:32.13 exactly, but the .13 is omitted
1875 # below because the current format requires GMTOFF to be an integer.
1876 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1877 Zone Europe/Amsterdam 0:19:32 - LMT 1835
1878 0:19:32 Neth %s 1937 Jul 1
1879 0:20 Neth NE%sT 1940 May 16 0:00 # Dutch Time
1880 1:00 C-Eur CE%sT 1945 Apr 2 2:00
1881 1:00 Neth CE%sT 1977
1885 # http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks &
1887 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1888 Rule Norway 1916 only - May 22 1:00 1:00 S
1889 Rule Norway 1916 only - Sep 30 0:00 0 -
1890 Rule Norway 1945 only - Apr 2 2:00s 1:00 S
1891 Rule Norway 1945 only - Oct 1 2:00s 0 -
1892 Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S
1893 Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 -
1894 Rule Norway 1965 only - Apr 25 2:00s 1:00 S
1895 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1896 Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1
1897 1:00 Norway CE%sT 1940 Aug 10 23:00
1898 1:00 C-Eur CE%sT 1945 Apr 2 2:00
1899 1:00 Norway CE%sT 1980
1902 # Svalbard & Jan Mayen
1904 # From Steffen Thorsen (2001-05-01):
1905 # Although I could not find it explicitly, it seems that Jan Mayen and
1906 # Svalbard have been using the same time as Norway at least since the
1907 # time they were declared as parts of Norway. Svalbard was declared
1908 # as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan
1909 # Mayen by law of 1930-02-27 no 2, section 2. (From
1910 # <http://www.lovdata.no/all/nl-19250717-011.html> and
1911 # <http://www.lovdata.no/all/nl-19300227-002.html>). The law/regulation
1912 # for normal/standard time in Norway is from 1894-06-29 no 1 (came
1913 # into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a
1914 # part of this law since 1925/1930. (From
1915 # <http://www.lovdata.no/all/nl-18940629-001.html>) I have not been
1916 # able to find if Jan Mayen used a different time zone (e.g. -0100)
1917 # before 1930. Jan Mayen has only been "inhabited" since 1921 by
1918 # Norwegian meteorologists and maybe used the same time as Norway ever
1919 # since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since
1920 # before 1895, and therefore probably changed the local time somewhere
1921 # between 1895 and 1925 (inclusive).
1923 # From Paul Eggert (2013-09-04):
1925 # Actually, Jan Mayen was never occupied by Germany during World War II,
1926 # so it must have diverged from Oslo time during the war, as Oslo was
1927 # keeping Berlin time.
1929 # <http://home.no.net/janmayen/history.htm> says that the meteorologists
1930 # burned down their station in 1940 and left the island, but returned in
1931 # 1941 with a small Norwegian garrison and continued operations despite
1932 # frequent air attacks from Germans. In 1943 the Americans established a
1933 # radiolocating station on the island, called "Atlantic City". Possibly
1934 # the UT offset changed during the war, but I think it unlikely that
1935 # Jan Mayen used German daylight-saving rules.
1937 # Svalbard is more complicated, as it was raided in August 1941 by an
1938 # Allied party that evacuated the civilian population to England (says
1939 # <http://www.bartleby.com/65/sv/Svalbard.html>). The Svalbard FAQ
1940 # <http://www.svalbard.com/SvalbardFAQ.html> says that the Germans were
1941 # expelled on 1942-05-14. However, small parties of Germans did return,
1942 # and according to Wilhelm Dege's book "War North of 80" (1954)
1943 # http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html
1944 # the German armed forces at the Svalbard weather station code-named
1945 # Haudegen did not surrender to the Allies until September 1945.
1947 # All these events predate our cutoff date of 1970, so use Europe/Oslo
1948 # for these regions.
1949 Link Europe/Oslo Arctic/Longyearbyen
1953 # The 1919 dates and times can be found in Tygodnik Urzędowy nr 1 (1919-03-20),
1954 # <http://www.wbc.poznan.pl/publication/32156> pp 1-2.
1956 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1957 Rule Poland 1918 1919 - Sep 16 2:00s 0 -
1958 Rule Poland 1919 only - Apr 15 2:00s 1:00 S
1959 Rule Poland 1944 only - Apr 3 2:00s 1:00 S
1960 # Whitman gives 1944 Nov 30; go with Shanks & Pottenger.
1961 Rule Poland 1944 only - Oct 4 2:00 0 -
1962 # For 1944-1948 Whitman gives the previous day; go with Shanks & Pottenger.
1963 Rule Poland 1945 only - Apr 29 0:00 1:00 S
1964 Rule Poland 1945 only - Nov 1 0:00 0 -
1965 # For 1946 on the source is Kazimierz Borkowski,
1966 # Toruń Center for Astronomy, Dept. of Radio Astronomy, Nicolaus Copernicus U.,
1967 # http://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1
1968 # Thanks to Przemysław Augustyniak (2005-05-28) for this reference.
1969 # He also gives these further references:
1970 # Mon Pol nr 13, poz 162 (1995) <http://www.abc.com.pl/serwis/mp/1995/0162.htm>
1971 # Druk nr 2180 (2003) <http://www.senat.gov.pl/k5/dok/sejm/053/2180.pdf>
1972 Rule Poland 1946 only - Apr 14 0:00s 1:00 S
1973 Rule Poland 1946 only - Oct 7 2:00s 0 -
1974 Rule Poland 1947 only - May 4 2:00s 1:00 S
1975 Rule Poland 1947 1949 - Oct Sun>=1 2:00s 0 -
1976 Rule Poland 1948 only - Apr 18 2:00s 1:00 S
1977 Rule Poland 1949 only - Apr 10 2:00s 1:00 S
1978 Rule Poland 1957 only - Jun 2 1:00s 1:00 S
1979 Rule Poland 1957 1958 - Sep lastSun 1:00s 0 -
1980 Rule Poland 1958 only - Mar 30 1:00s 1:00 S
1981 Rule Poland 1959 only - May 31 1:00s 1:00 S
1982 Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
1983 Rule Poland 1960 only - Apr 3 1:00s 1:00 S
1984 Rule Poland 1961 1964 - May lastSun 1:00s 1:00 S
1985 Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
1986 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1987 Zone Europe/Warsaw 1:24:00 - LMT 1880
1988 1:24:00 - WMT 1915 Aug 5 # Warsaw Mean Time
1989 1:00 C-Eur CE%sT 1918 Sep 16 3:00
1990 2:00 Poland EE%sT 1922 Jun
1991 1:00 Poland CE%sT 1940 Jun 23 2:00
1992 1:00 C-Eur CE%sT 1944 Oct
1993 1:00 Poland CE%sT 1977
1994 1:00 W-Eur CE%sT 1988
1999 # From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
2000 # According to a Portuguese decree (1911-05-26)
2001 # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
2002 # Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00.
2003 # Round the old offset to -0:36:45. This agrees with Willett but disagrees
2004 # with Shanks, who says the transition occurred on 1911-05-24 at 00:00 for
2005 # Europe/Lisbon, Atlantic/Azores, and Atlantic/Madeira.
2007 # From Rui Pedro Salgueiro (1992-11-12):
2008 # Portugal has recently (September, 27) changed timezone
2009 # (from WET to MET or CET) to harmonize with EEC.
2011 # Martin Bruckmann (1996-02-29) reports via Peter Ilieve
2012 # that Portugal is reverting to 0:00 by not moving its clocks this spring.
2013 # The new Prime Minister was fed up with getting up in the dark in the winter.
2015 # From Paul Eggert (1996-11-12):
2016 # IATA SSIM (1991-09) reports several 1991-09 and 1992-09 transitions
2017 # at 02:00u, not 01:00u. Assume that these are typos.
2018 # IATA SSIM (1991/1992) reports that the Azores were at -1:00.
2019 # IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00.
2020 # Guess that the Azores changed to EU rules in 1992 (since that's when Portugal
2021 # harmonized with the EU), and that they stayed +0:00 that winter.
2023 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2024 # DSH writes that despite Decree 1,469 (1915), the change to the clocks was not
2025 # done every year, depending on what Spain did, because of railroad schedules.
2026 # Go with Shanks & Pottenger.
2027 Rule Port 1916 only - Jun 17 23:00 1:00 S
2028 # Whitman gives 1916 Oct 31; go with Shanks & Pottenger.
2029 Rule Port 1916 only - Nov 1 1:00 0 -
2030 Rule Port 1917 only - Feb 28 23:00s 1:00 S
2031 Rule Port 1917 1921 - Oct 14 23:00s 0 -
2032 Rule Port 1918 only - Mar 1 23:00s 1:00 S
2033 Rule Port 1919 only - Feb 28 23:00s 1:00 S
2034 Rule Port 1920 only - Feb 29 23:00s 1:00 S
2035 Rule Port 1921 only - Feb 28 23:00s 1:00 S
2036 Rule Port 1924 only - Apr 16 23:00s 1:00 S
2037 Rule Port 1924 only - Oct 14 23:00s 0 -
2038 Rule Port 1926 only - Apr 17 23:00s 1:00 S
2039 Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 -
2040 Rule Port 1927 only - Apr 9 23:00s 1:00 S
2041 Rule Port 1928 only - Apr 14 23:00s 1:00 S
2042 Rule Port 1929 only - Apr 20 23:00s 1:00 S
2043 Rule Port 1931 only - Apr 18 23:00s 1:00 S
2044 # Whitman gives 1931 Oct 8; go with Shanks & Pottenger.
2045 Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 -
2046 Rule Port 1932 only - Apr 2 23:00s 1:00 S
2047 Rule Port 1934 only - Apr 7 23:00s 1:00 S
2048 # Whitman gives 1934 Oct 5; go with Shanks & Pottenger.
2049 Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 -
2050 # Shanks & Pottenger give 1935 Apr 30; go with Whitman.
2051 Rule Port 1935 only - Mar 30 23:00s 1:00 S
2052 Rule Port 1936 only - Apr 18 23:00s 1:00 S
2053 # Whitman gives 1937 Apr 2; go with Shanks & Pottenger.
2054 Rule Port 1937 only - Apr 3 23:00s 1:00 S
2055 Rule Port 1938 only - Mar 26 23:00s 1:00 S
2056 Rule Port 1939 only - Apr 15 23:00s 1:00 S
2057 # Whitman gives 1939 Oct 7; go with Shanks & Pottenger.
2058 Rule Port 1939 only - Nov 18 23:00s 0 -
2059 Rule Port 1940 only - Feb 24 23:00s 1:00 S
2060 # Shanks & Pottenger give 1940 Oct 7; go with Whitman.
2061 Rule Port 1940 1941 - Oct 5 23:00s 0 -
2062 Rule Port 1941 only - Apr 5 23:00s 1:00 S
2063 Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 S
2064 Rule Port 1942 only - Apr 25 22:00s 2:00 M # Midsummer
2065 Rule Port 1942 only - Aug 15 22:00s 1:00 S
2066 Rule Port 1942 1945 - Oct Sat>=24 23:00s 0 -
2067 Rule Port 1943 only - Apr 17 22:00s 2:00 M
2068 Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 S
2069 Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 M
2070 Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 S
2071 Rule Port 1946 only - Oct Sat>=1 23:00s 0 -
2072 Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 S
2073 Rule Port 1947 1949 - Oct Sun>=1 2:00s 0 -
2074 # Shanks & Pottenger say DST was observed in 1950; go with Whitman.
2075 # Whitman gives Oct lastSun for 1952 on; go with Shanks & Pottenger.
2076 Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 S
2077 Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 -
2078 Rule Port 1977 only - Mar 27 0:00s 1:00 S
2079 Rule Port 1977 only - Sep 25 0:00s 0 -
2080 Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 S
2081 Rule Port 1978 only - Oct 1 0:00s 0 -
2082 Rule Port 1979 1982 - Sep lastSun 1:00s 0 -
2083 Rule Port 1980 only - Mar lastSun 0:00s 1:00 S
2084 Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S
2085 Rule Port 1983 only - Mar lastSun 2:00s 1:00 S
2087 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2088 Zone Europe/Lisbon -0:36:45 - LMT 1884
2089 -0:36:45 - LMT 1912 Jan 1 # Lisbon Mean Time
2090 0:00 Port WE%sT 1966 Apr 3 2:00
2091 1:00 - CET 1976 Sep 26 1:00
2092 0:00 Port WE%sT 1983 Sep 25 1:00s
2093 0:00 W-Eur WE%sT 1992 Sep 27 1:00s
2094 1:00 EU CE%sT 1996 Mar 31 1:00u
2096 Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
2097 -1:54:32 - HMT 1912 Jan 1 # Horta Mean Time
2098 -2:00 Port AZO%sT 1966 Apr 3 2:00 # Azores Time
2099 -1:00 Port AZO%sT 1983 Sep 25 1:00s
2100 -1:00 W-Eur AZO%sT 1992 Sep 27 1:00s
2101 0:00 EU WE%sT 1993 Mar 28 1:00u
2103 Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
2104 -1:07:36 - FMT 1912 Jan 1 # Funchal Mean Time
2105 -1:00 Port MAD%sT 1966 Apr 3 2:00 # Madeira Time
2106 0:00 Port WE%sT 1983 Sep 25 1:00s
2111 # From Paul Eggert (1999-10-07):
2112 # Nine O'clock <http://www.nineoclock.ro/POL/1778pol.html>
2113 # (1998-10-23) reports that the switch occurred at
2114 # 04:00 local time in fall 1998. For lack of better info,
2115 # assume that Romania and Moldova switched to EU rules in 1997,
2116 # the same year as Bulgaria.
2118 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2119 Rule Romania 1932 only - May 21 0:00s 1:00 S
2120 Rule Romania 1932 1939 - Oct Sun>=1 0:00s 0 -
2121 Rule Romania 1933 1939 - Apr Sun>=2 0:00s 1:00 S
2122 Rule Romania 1979 only - May 27 0:00 1:00 S
2123 Rule Romania 1979 only - Sep lastSun 0:00 0 -
2124 Rule Romania 1980 only - Apr 5 23:00 1:00 S
2125 Rule Romania 1980 only - Sep lastSun 1:00 0 -
2126 Rule Romania 1991 1993 - Mar lastSun 0:00s 1:00 S
2127 Rule Romania 1991 1993 - Sep lastSun 0:00s 0 -
2128 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2129 Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct
2130 1:44:24 - BMT 1931 Jul 24 # Bucharest MT
2131 2:00 Romania EE%sT 1981 Mar 29 2:00s
2132 2:00 C-Eur EE%sT 1991
2133 2:00 Romania EE%sT 1994
2134 2:00 E-Eur EE%sT 1997
2140 # From Alexander Krivenyshev (2011-09-15):
2141 # Based on last Russian Government Decree No. 725 on August 31, 2011
2142 # (Government document
2143 # http://www.government.ru/gov/results/16355/print/
2145 # there are few corrections have to be made for some Russian time zones...
2146 # All updated Russian Time Zones were placed in table and translated to English
2147 # by WorldTimeZone.com at the link below:
2148 # http://www.worldtimezone.com/dst_news/dst_news_russia36.htm
2150 # From Sanjeev Gupta (2011-09-27):
2151 # Scans of [Decree No. 23 of January 8, 1992] are available at:
2152 # http://government.consultant.ru/page.aspx?1223966
2153 # They are in Cyrillic letters (presumably Russian).
2155 # From Arthur David Olson (2012-05-09):
2156 # Regarding the instant when clocks in time-zone-shifting parts of Russia
2157 # changed in September 2011:
2160 # http://government.ru/gov/results/16355/
2161 # which, according to translate.google.com, begins "Decree of August 31,
2162 # 2011 No. 725" and contains no other dates or "effective date" information.
2165 # http://www.rg.ru/2011/09/06/chas-zona-dok.html
2166 # which, according to translate.google.com, begins "Resolution of the
2167 # Government of the Russian Federation on August 31, 2011 N 725" and also
2168 # contains "Date first official publication: September 6, 2011 Posted on:
2169 # in the 'RG' - Federal Issue No. 5573 September 6, 2011" but which
2170 # does not contain any "effective date" information.
2173 # http://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7
2174 # which, in note 8, contains "Resolution No. 725 of August 31, 2011...
2175 # Effective as of after 7 days following the day of the official publication"
2176 # but which does not contain any reference to September 6, 2011.
2178 # The Wikipedia article refers to
2179 # http://base.consultant.ru/cons/cgi/online.cgi?req=doc;base=LAW;n=118896
2180 # which seems to copy the text of the government.ru page.
2182 # Tobias Conradi combines Wikipedia's
2183 # "as of after 7 days following the day of the official publication"
2184 # with www.rg.ru's "Date of first official publication: September 6, 2011" to
2185 # get September 13, 2011 as the cutover date (unusually, a Tuesday, as Tobias
2188 # None of the sources indicates a time of day for changing clocks.
2190 # Go with 2011-09-13 0:00s.
2192 # From Alexander Krivenyshev (2014-07-01):
2193 # According to the Russian news (ITAR-TASS News Agency)
2194 # http://en.itar-tass.com/russia/738562
2195 # the State Duma has approved ... the draft bill on returning to
2196 # winter time standard and return Russia 11 time zones. The new
2197 # regulations will come into effect on October 26, 2014 at 02:00 ...
2198 # http://asozd2.duma.gov.ru/main.nsf/%28Spravka%29?OpenAgent&RN=431985-6&02
2199 # Here is a link where we put together table (based on approved Bill N
2200 # 431985-6) with proposed 11 Russian time zones and corresponding
2201 # areas/cities/administrative centers in the Russian Federation (in English):
2202 # http://www.worldtimezone.com/dst_news/dst_news_russia65.html
2204 # From Alexander Krivenyshev (2014-07-22):
2205 # Putin signed the Federal Law 431985-6 ... (in Russian)
2206 # http://itar-tass.com/obschestvo/1333711
2207 # http://www.pravo.gov.ru:8080/page.aspx?111660
2208 # http://www.kremlin.ru/acts/46279
2209 # From October 26, 2014 the new Russian time zone map will looks like this:
2210 # http://www.worldtimezone.com/dst_news/dst_news_russia-map-2014-07.html
2212 # From Paul Eggert (2006-03-22):
2213 # Except for Moscow after 1919-07-01, I invented the time zone abbreviations.
2214 # Moscow time zone abbreviations after 1919-07-01, and Moscow rules after 1991,
2215 # are from Andrey A. Chernov. The rest is from Shanks & Pottenger,
2216 # except we follow Chernov's report that 1992 DST transitions were Sat
2217 # 23:00, not Sun 02:00s.
2219 # From Stanislaw A. Kuzikowski (1994-06-29):
2220 # But now it is some months since Novosibirsk is 3 hours ahead of Moscow!
2221 # I do not know why they have decided to make this change;
2222 # as far as I remember it was done exactly during winter->summer switching
2223 # so we (Novosibirsk) simply did not switch.
2225 # From Andrey A. Chernov (1996-10-04):
2226 # 'MSK' and 'MSD' were born and used initially on Moscow computers with
2227 # UNIX-like OSes by several developer groups (e.g. Demos group, Kiae group)....
2228 # The next step was the UUCP network, the Relcom predecessor
2229 # (used mainly for mail), and MSK/MSD was actively used there.
2231 # From Chris Carrier (1996-10-30):
2232 # According to a friend of mine who rode the Trans-Siberian Railroad from
2233 # Moscow to Irkutsk in 1995, public air and rail transport in Russia ...
2234 # still follows Moscow time, no matter where in Russia it is located.
2236 # For Grozny, Chechnya, we have the following story from
2237 # John Daniszewski, "Scavengers in the Rubble", Los Angeles Times (2001-02-07):
2238 # News - often false - is spread by word of mouth. A rumor that it was
2239 # time to move the clocks back put this whole city out of sync with
2240 # the rest of Russia for two weeks - even soldiers stationed here began
2241 # enforcing curfew at the wrong time.
2243 # From Gwillim Law (2001-06-05):
2244 # There's considerable evidence that Sakhalin Island used to be in
2245 # UTC+11, and has changed to UTC+10, in this decade. I start with the
2246 # SSIM, which listed Yuzhno-Sakhalinsk in zone RU10 along with Magadan
2247 # until February 1997, and then in RU9 with Khabarovsk and Vladivostok
2248 # since September 1997.... Although the Kuril Islands are
2249 # administratively part of Sakhalin oblast', they appear to have
2250 # remained on UTC+11 along with Magadan.
2252 # From Tim Parenti (2014-07-06):
2253 # The comments detailing the coverage of each Russian zone are meant to assist
2254 # with maintenance only and represent our best guesses as to which regions
2255 # are covered by each zone. They are not meant to be taken as an authoritative
2256 # listing. The region codes listed come from
2257 # http://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498
2258 # and are used for convenience only; no guarantees are made regarding their
2259 # future stability. ISO 3166-2:RU codes are also listed for first-level
2260 # divisions where available.
2262 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2265 # From Tim Parenti (2014-07-03):
2266 # Europe/Kaliningrad covers...
2267 # 39 RU-KGD Kaliningrad Oblast
2269 Zone Europe/Kaliningrad 1:22:00 - LMT 1893 Apr
2270 1:00 C-Eur CE%sT 1945
2271 2:00 Poland CE%sT 1946
2272 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
2273 2:00 Russia EE%sT 2011 Mar 27 2:00s
2274 3:00 - FET 2014 Oct 26 2:00s
2278 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2279 # Europe/Moscow covers...
2280 # 01 RU-AD Adygea, Republic of
2281 # 05 RU-DA Dagestan, Republic of
2282 # 06 RU-IN Ingushetia, Republic of
2283 # 07 RU-KB Kabardino-Balkar Republic
2284 # 08 RU-KL Kalmykia, Republic of
2285 # 09 RU-KC Karachay-Cherkess Republic
2286 # 10 RU-KR Karelia, Republic of
2287 # 11 RU-KO Komi Republic
2288 # 12 RU-ME Mari El Republic
2289 # 13 RU-MO Mordovia, Republic of
2290 # 15 RU-SE North Ossetia-Alania, Republic of
2291 # 16 RU-TA Tatarstan, Republic of
2292 # 20 RU-CE Chechen Republic
2293 # 21 RU-CU Chuvash Republic
2294 # 23 RU-KDA Krasnodar Krai
2295 # 26 RU-STA Stavropol Krai
2296 # 29 RU-ARK Arkhangelsk Oblast
2297 # 31 RU-BEL Belgorod Oblast
2298 # 32 RU-BRY Bryansk Oblast
2299 # 33 RU-VLA Vladimir Oblast
2300 # 35 RU-VLG Vologda Oblast
2301 # 36 RU-VOR Voronezh Oblast
2302 # 37 RU-IVA Ivanovo Oblast
2303 # 40 RU-KLU Kaluga Oblast
2304 # 44 RU-KOS Kostroma Oblast
2305 # 46 RU-KRS Kursk Oblast
2306 # 47 RU-LEN Leningrad Oblast
2307 # 48 RU-LIP Lipetsk Oblast
2308 # 50 RU-MOS Moscow Oblast
2309 # 51 RU-MUR Murmansk Oblast
2310 # 52 RU-NIZ Nizhny Novgorod Oblast
2311 # 53 RU-NGR Novgorod Oblast
2312 # 57 RU-ORL Oryol Oblast
2313 # 58 RU-PNZ Penza Oblast
2314 # 60 RU-PSK Pskov Oblast
2315 # 61 RU-ROS Rostov Oblast
2316 # 62 RU-RYA Ryazan Oblast
2317 # 67 RU-SMO Smolensk Oblast
2318 # 68 RU-TAM Tambov Oblast
2319 # 69 RU-TVE Tver Oblast
2320 # 71 RU-TUL Tula Oblast
2321 # 73 RU-ULY Ulyanovsk Oblast
2322 # 76 RU-YAR Yaroslavl Oblast
2324 # 78 RU-SPE Saint Petersburg
2325 # 83 RU-NEN Nenets Autonomous Okrug
2327 # From Vladimir Karpinsky (2014-07-08):
2328 # LMT in Moscow (before Jul 3, 1916) is 2:30:17, that was defined by Moscow
2329 # Observatory (coordinates: 55 deg. 45'29.70", 37 deg. 34'05.30")....
2330 # LMT in Moscow since Jul 3, 1916 is 2:31:01 as a result of new standard.
2331 # (The info is from the book by Byalokoz ... p. 18.)
2332 # The time in St. Petersburg as capital of Russia was defined by
2333 # Pulkov observatory, near St. Petersburg. In 1916 LMT Moscow
2334 # was synchronized with LMT St. Petersburg (+30 minutes), (Pulkov observatory
2335 # coordinates: 59 deg. 46'18.70", 30 deg. 19'40.70") so 30 deg. 19'40.70" >
2336 # 2h01m18.7s = 2:01:19. LMT Moscow = LMT St.Petersburg + 30m 2:01:19 + 0:30 =
2339 # From Paul Eggert (2014-07-08):
2340 # Milne does not list Moscow, but suggests that its time might be listed in
2341 # Résumés mensuels et annuels des observations météorologiques (1895).
2342 # Presumably this is OCLC 85825704, a journal published with parallel text in
2343 # Russian and French. This source has not been located; go with Karpinsky.
2345 Zone Europe/Moscow 2:30:17 - LMT 1880
2346 2:30:17 - MMT 1916 Jul 3 # Moscow Mean Time
2347 2:31:19 Russia %s 1919 Jul 1 2:00
2348 3:00 Russia %s 1921 Oct
2349 3:00 Russia MSK/MSD 1922 Oct
2350 2:00 - EET 1930 Jun 21
2351 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
2352 2:00 Russia EE%sT 1992 Jan 19 2:00s
2353 3:00 Russia MSK/MSD 2011 Mar 27 2:00s
2354 4:00 - MSK 2014 Oct 26 2:00s
2358 # From Tim Parenti (2014-07-03):
2359 # Europe/Simferopol covers...
2360 # ** **** Crimea, Republic of
2361 # ** **** Sevastopol
2363 Zone Europe/Simferopol 2:16:24 - LMT 1880
2364 2:16 - SMT 1924 May 2 # Simferopol Mean T
2365 2:00 - EET 1930 Jun 21
2367 1:00 C-Eur CE%sT 1944 Apr 13
2368 3:00 Russia MSK/MSD 1990
2369 3:00 - MSK 1990 Jul 1 2:00
2371 # Central Crimea used Moscow time 1994/1997.
2373 # From Paul Eggert (2006-03-22):
2374 # The _Economist_ (1994-05-28, p 45) reports that central Crimea switched
2375 # from Kiev to Moscow time sometime after the January 1994 elections.
2376 # Shanks (1999) says "date of change uncertain", but implies that it happened
2377 # sometime between the 1994 DST switches. Shanks & Pottenger simply say
2378 # 1994-09-25 03:00, but that can't be right. For now, guess it
2380 2:00 E-Eur EE%sT 1994 May
2381 # From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev.
2382 3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s
2383 3:00 1:00 MSD 1996 Oct 27 3:00s
2384 # IATA SSIM (1997-09) says Crimea switched to EET/EEST.
2385 # Assume it happened in March by not changing the clocks.
2386 3:00 Russia MSK/MSD 1997
2387 3:00 - MSK 1997 Mar lastSun 1:00u
2388 # From Alexander Krivenyshev (2014-03-17):
2389 # time change at 2:00 (2am) on March 30, 2014
2390 # http://vz.ru/news/2014/3/17/677464.html
2391 # From Paul Eggert (2014-03-30):
2392 # Simferopol and Sevastopol reportedly changed their central town clocks
2393 # late the previous day, but this appears to have been ceremonial
2394 # and the discrepancies are small enough to not worry about.
2395 2:00 EU EE%sT 2014 Mar 30 2:00
2396 4:00 - MSK 2014 Oct 26 2:00s
2400 # From Tim Parenti (2014-07-03):
2401 # Europe/Volgograd covers...
2402 # 30 RU-AST Astrakhan Oblast
2403 # 34 RU-VGG Volgograd Oblast
2404 # 43 RU-KIR Kirov Oblast
2405 # 64 RU-SAR Saratov Oblast
2407 # From Paul Eggert (2006-05-09):
2408 # Shanks & Pottenger say Kirov is still at +0400 but Wikipedia says +0300.
2409 # Perhaps it switched after the others? But we have no data.
2411 Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3
2412 3:00 - TSAT 1925 Apr 6 # Tsaritsyn Time
2413 3:00 - STAT 1930 Jun 21 # Stalingrad Time
2414 4:00 - STAT 1961 Nov 11
2415 4:00 Russia VOL%sT 1989 Mar 26 2:00s # Volgograd T
2416 3:00 Russia VOL%sT 1991 Mar 31 2:00s
2417 4:00 - VOLT 1992 Mar 29 2:00s
2418 3:00 Russia MSK/MSD 2011 Mar 27 2:00s
2419 4:00 - MSK 2014 Oct 26 2:00s
2423 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2424 # Europe/Samara covers...
2425 # 18 RU-UD Udmurt Republic
2426 # 63 RU-SAM Samara Oblast
2428 # Byalokoz 1919 says Samara was 3:20:20.
2430 Zone Europe/Samara 3:20:20 - LMT 1919 Jul 1 2:00
2431 3:00 - SAMT 1930 Jun 21
2432 4:00 - SAMT 1935 Jan 27
2433 4:00 Russia KUY%sT 1989 Mar 26 2:00s # Kuybyshev
2434 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
2435 2:00 Russia EE%sT 1991 Sep 29 2:00s
2436 3:00 - KUYT 1991 Oct 20 3:00
2437 4:00 Russia SAM%sT 2010 Mar 28 2:00s # Samara Time
2438 3:00 Russia SAM%sT 2011 Mar 27 2:00s
2442 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2443 # Asia/Yekaterinburg covers...
2444 # 02 RU-BA Bashkortostan, Republic of
2445 # 90 RU-PER Perm Krai
2446 # 45 RU-KGN Kurgan Oblast
2447 # 56 RU-ORE Orenburg Oblast
2448 # 66 RU-SVE Sverdlovsk Oblast
2449 # 72 RU-TYU Tyumen Oblast
2450 # 74 RU-CHE Chelyabinsk Oblast
2451 # 86 RU-KHM Khanty-Mansi Autonomous Okrug - Yugra
2452 # 89 RU-YAN Yamalo-Nenets Autonomous Okrug
2454 # Note: Effective 2005-12-01, (59) Perm Oblast and (81) Komi-Permyak
2455 # Autonomous Okrug merged to form (90, RU-PER) Perm Krai.
2457 # Milne says Yekaterinburg was 4:02:32.9; round to nearest.
2458 # Byalokoz 1919 says its provincial time was based on Perm, at 3:45:05.
2459 # Assume it switched on 1916-07-03, the time of the new standard.
2460 # The 1919 and 1930 transitions are from Shanks.
2462 Zone Asia/Yekaterinburg 4:02:33 - LMT 1916 Jul 3
2463 3:45:05 - PMT 1919 Jul 15 4:00
2464 4:00 - SVET 1930 Jun 21 # Sverdlovsk Time
2465 5:00 Russia SVE%sT 1991 Mar 31 2:00s
2466 4:00 Russia SVE%sT 1992 Jan 19 2:00s
2467 5:00 Russia YEK%sT 2011 Mar 27 2:00s
2468 6:00 - YEKT 2014 Oct 26 2:00s
2472 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2473 # Asia/Omsk covers...
2474 # 04 RU-AL Altai Republic
2475 # 22 RU-ALT Altai Krai
2476 # 55 RU-OMS Omsk Oblast
2478 # Byalokoz 1919 says Omsk was 4:53:30.
2480 Zone Asia/Omsk 4:53:30 - LMT 1919 Nov 14
2481 5:00 - OMST 1930 Jun 21 # Omsk Time
2482 6:00 Russia OMS%sT 1991 Mar 31 2:00s
2483 5:00 Russia OMS%sT 1992 Jan 19 2:00s
2484 6:00 Russia OMS%sT 2011 Mar 27 2:00s
2485 7:00 - OMST 2014 Oct 26 2:00s
2489 # From Tim Parenti (2014-07-03):
2490 # Asia/Novosibirsk covers...
2491 # 54 RU-NVS Novosibirsk Oblast
2492 # 70 RU-TOM Tomsk Oblast
2494 # From Paul Eggert (2006-08-19): I'm guessing about Tomsk here; it's
2495 # not clear when it switched from +7 to +6.
2497 Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00
2498 6:00 - NOVT 1930 Jun 21 # Novosibirsk Time
2499 7:00 Russia NOV%sT 1991 Mar 31 2:00s
2500 6:00 Russia NOV%sT 1992 Jan 19 2:00s
2501 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P.
2502 6:00 Russia NOV%sT 2011 Mar 27 2:00s
2503 7:00 - NOVT 2014 Oct 26 2:00s
2507 # From Tim Parenti (2014-07-03):
2508 # Asia/Novokuznetsk covers...
2509 # 42 RU-KEM Kemerovo Oblast
2511 # From Alexander Krivenyshev (2009-10-13):
2512 # Kemerovo oblast' (Kemerovo region) in Russia will change current time zone on
2514 # from current Russia Zone 6 - Krasnoyarsk Time Zone (KRA) UTC +0700
2515 # to Russia Zone 5 - Novosibirsk Time Zone (NOV) UTC +0600
2517 # This is according to Government of Russia decree No. 740, on September
2518 # 14, 2009 "Application in the territory of the Kemerovo region the Fifth
2519 # time zone." ("Russia Zone 5" or old "USSR Zone 5" is GMT +0600)
2521 # Russian Government web site (Russian language)
2522 # http://www.government.ru/content/governmentactivity/rfgovernmentdecisions/archive/2009/09/14/991633.htm
2523 # or Russian-English translation by WorldTimeZone.com with reference
2524 # map to local region and new Russia Time Zone map after March 28, 2010
2525 # http://www.worldtimezone.com/dst_news/dst_news_russia03.html
2527 # Thus, when Russia will switch to DST on the night of March 28, 2010
2528 # Kemerovo region (Kemerovo oblast') will not change the clock.
2530 # As a result, Kemerovo oblast' will be in the same time zone as
2531 # Novosibirsk, Omsk, Tomsk, Barnaul and Altai Republic.
2533 # From Tim Parenti (2014-07-02), per Alexander Krivenyshev (2014-07-02):
2534 # The Kemerovo region will remain at UTC+7 through the 2014-10-26 change, thus
2535 # realigning itself with KRAT.
2537 Zone Asia/Novokuznetsk 5:48:48 - LMT 1924 May 1
2538 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time
2539 7:00 Russia KRA%sT 1991 Mar 31 2:00s
2540 6:00 Russia KRA%sT 1992 Jan 19 2:00s
2541 7:00 Russia KRA%sT 2010 Mar 28 2:00s
2542 6:00 Russia NOV%sT 2011 Mar 27 2:00s # Novosibirsk
2543 7:00 - NOVT 2014 Oct 26 2:00s
2544 7:00 - KRAT # Krasnoyarsk Time
2547 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2548 # Asia/Krasnoyarsk covers...
2549 # 17 RU-TY Tuva Republic
2550 # 19 RU-KK Khakassia, Republic of
2551 # 24 RU-KYA Krasnoyarsk Krai
2553 # Note: Effective 2007-01-01, (88) Evenk Autonomous Okrug and (84) Taymyr
2554 # Autonomous Okrug were merged into (24, RU-KYA) Krasnoyarsk Krai.
2556 # Byalokoz 1919 says Krasnoyarsk was 6:11:26.
2558 Zone Asia/Krasnoyarsk 6:11:26 - LMT 1920 Jan 6
2559 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time
2560 7:00 Russia KRA%sT 1991 Mar 31 2:00s
2561 6:00 Russia KRA%sT 1992 Jan 19 2:00s
2562 7:00 Russia KRA%sT 2011 Mar 27 2:00s
2563 8:00 - KRAT 2014 Oct 26 2:00s
2567 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2568 # Asia/Irkutsk covers...
2569 # 03 RU-BU Buryatia, Republic of
2570 # 38 RU-IRK Irkutsk Oblast
2572 # Note: Effective 2008-01-01, (85) Ust-Orda Buryat Autonomous Okrug was
2573 # merged into (38, RU-IRK) Irkutsk Oblast.
2575 # Milne 1899 says Irkutsk was 6:57:15.
2576 # Byalokoz 1919 says Irkutsk was 6:57:05.
2579 Zone Asia/Irkutsk 6:57:05 - LMT 1880
2580 6:57:05 - IMT 1920 Jan 25 # Irkutsk Mean Time
2581 7:00 - IRKT 1930 Jun 21 # Irkutsk Time
2582 8:00 Russia IRK%sT 1991 Mar 31 2:00s
2583 7:00 Russia IRK%sT 1992 Jan 19 2:00s
2584 8:00 Russia IRK%sT 2011 Mar 27 2:00s
2585 9:00 - IRKT 2014 Oct 26 2:00s
2589 # From Tim Parenti (2014-07-06):
2590 # Asia/Chita covers...
2591 # 92 RU-ZAB Zabaykalsky Krai
2593 # Note: Effective 2008-03-01, (75) Chita Oblast and (80) Agin-Buryat
2594 # Autonomous Okrug merged to form (92, RU-ZAB) Zabaykalsky Krai.
2596 Zone Asia/Chita 7:33:52 - LMT 1919 Dec 15
2597 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2598 9:00 Russia YAK%sT 1991 Mar 31 2:00s
2599 8:00 Russia YAK%sT 1992 Jan 19 2:00s
2600 9:00 Russia YAK%sT 2011 Mar 27 2:00s
2601 10:00 - YAKT 2014 Oct 26 2:00s
2605 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
2606 # Asia/Yakutsk covers...
2607 # 28 RU-AMU Amur Oblast
2609 # ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
2610 # 14-02 **** Aldansky District
2611 # 14-04 **** Amginsky District
2612 # 14-05 **** Anabarsky District
2613 # 14-06 **** Bulunsky District
2614 # 14-07 **** Verkhnevilyuysky District
2615 # 14-10 **** Vilyuysky District
2616 # 14-11 **** Gorny District
2617 # 14-12 **** Zhigansky District
2618 # 14-13 **** Kobyaysky District
2619 # 14-14 **** Lensky District
2620 # 14-15 **** Megino-Kangalassky District
2621 # 14-16 **** Mirninsky District
2622 # 14-18 **** Namsky District
2623 # 14-19 **** Neryungrinsky District
2624 # 14-21 **** Nyurbinsky District
2625 # 14-23 **** Olenyoksky District
2626 # 14-24 **** Olyokminsky District
2627 # 14-26 **** Suntarsky District
2628 # 14-27 **** Tattinsky District
2629 # 14-29 **** Ust-Aldansky District
2630 # 14-32 **** Khangalassky District
2631 # 14-33 **** Churapchinsky District
2632 # 14-34 **** Eveno-Bytantaysky National District
2634 # From Tim Parenti (2014-07-03):
2635 # Our commentary seems to have lost mention of (14-19) Neryungrinsky District.
2636 # Since the surrounding districts of Sakha are all YAKT, assume this is, too.
2637 # Also assume its history has been the same as the rest of Asia/Yakutsk.
2639 # Byalokoz 1919 says Yakutsk was 8:38:58.
2641 Zone Asia/Yakutsk 8:38:58 - LMT 1919 Dec 15
2642 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2643 9:00 Russia YAK%sT 1991 Mar 31 2:00s
2644 8:00 Russia YAK%sT 1992 Jan 19 2:00s
2645 9:00 Russia YAK%sT 2011 Mar 27 2:00s
2646 10:00 - YAKT 2014 Oct 26 2:00s
2650 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
2651 # Asia/Vladivostok covers...
2652 # 25 RU-PRI Primorsky Krai
2653 # 27 RU-KHA Khabarovsk Krai
2654 # 79 RU-YEV Jewish Autonomous Oblast
2656 # ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
2657 # 14-09 **** Verkhoyansky District
2658 # 14-31 **** Ust-Yansky District
2660 # Milne 1899 says Vladivostok was 8:47:33.5.
2661 # Byalokoz 1919 says Vladivostok was 8:47:31.
2664 Zone Asia/Vladivostok 8:47:31 - LMT 1922 Nov 15
2665 9:00 - VLAT 1930 Jun 21 # Vladivostok Time
2666 10:00 Russia VLA%sT 1991 Mar 31 2:00s
2667 9:00 Russia VLA%sT 1992 Jan 19 2:00s
2668 10:00 Russia VLA%sT 2011 Mar 27 2:00s
2669 11:00 - VLAT 2014 Oct 26 2:00s
2673 # From Tim Parenti (2014-07-03):
2674 # Asia/Khandyga covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
2675 # 14-28 **** Tomponsky District
2676 # 14-30 **** Ust-Maysky District
2678 # From Arthur David Olson (2012-05-09):
2679 # Tomponskij and Ust'-Majskij switched from Vladivostok time to Yakutsk time
2682 # From Paul Eggert (2012-11-25):
2683 # Shanks and Pottenger (2003) has Khandyga on Yakutsk time.
2684 # Make a wild guess that it switched to Vladivostok time in 2004.
2685 # This transition is no doubt wrong, but we have no better info.
2687 Zone Asia/Khandyga 9:02:13 - LMT 1919 Dec 15
2688 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2689 9:00 Russia YAK%sT 1991 Mar 31 2:00s
2690 8:00 Russia YAK%sT 1992 Jan 19 2:00s
2691 9:00 Russia YAK%sT 2004
2692 10:00 Russia VLA%sT 2011 Mar 27 2:00s
2693 11:00 - VLAT 2011 Sep 13 0:00s # Decree 725?
2694 10:00 - YAKT 2014 Oct 26 2:00s
2698 # From Tim Parenti (2014-07-03):
2699 # Asia/Sakhalin covers...
2700 # 65 RU-SAK Sakhalin Oblast
2701 # ...with the exception of:
2702 # 65-11 **** Severo-Kurilsky District (North Kuril Islands)
2704 # The Zone name should be Asia/Yuzhno-Sakhalinsk, but that's too long.
2705 Zone Asia/Sakhalin 9:30:48 - LMT 1905 Aug 23
2706 9:00 - JCST 1937 Oct 1
2707 9:00 - JST 1945 Aug 25
2708 11:00 Russia SAK%sT 1991 Mar 31 2:00s # Sakhalin T
2709 10:00 Russia SAK%sT 1992 Jan 19 2:00s
2710 11:00 Russia SAK%sT 1997 Mar lastSun 2:00s
2711 10:00 Russia SAK%sT 2011 Mar 27 2:00s
2712 11:00 - SAKT 2014 Oct 26 2:00s
2716 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
2717 # Asia/Magadan covers...
2718 # 49 RU-MAG Magadan Oblast
2720 # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
2721 # Magadan Oblast is moving from UTC+12 to UTC+10 on 2014-10-26; however,
2722 # several districts of Sakha Republic as well as Severo-Kurilsky District of
2723 # the Sakhalin Oblast (also known as the North Kuril Islands), represented
2724 # until now by Asia/Magadan, will instead move to UTC+11. These regions will
2725 # need their own zone.
2727 Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
2728 10:00 - MAGT 1930 Jun 21 # Magadan Time
2729 11:00 Russia MAG%sT 1991 Mar 31 2:00s
2730 10:00 Russia MAG%sT 1992 Jan 19 2:00s
2731 11:00 Russia MAG%sT 2011 Mar 27 2:00s
2732 12:00 - MAGT 2014 Oct 26 2:00s
2736 # From Tim Parenti (2014-07-06):
2737 # Asia/Srednekolymsk covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
2738 # 14-01 **** Abyysky District
2739 # 14-03 **** Allaikhovsky District
2740 # 14-08 **** Verkhnekolymsky District
2741 # 14-17 **** Momsky District
2742 # 14-20 **** Nizhnekolymsky District
2743 # 14-25 **** Srednekolymsky District
2745 # ...and parts of (65, RU-SAK) Sakhalin Oblast:
2746 # 65-11 **** Severo-Kurilsky District (North Kuril Islands)
2748 # From Tim Parenti (2014-07-02):
2749 # Oymyakonsky District of Sakha Republic (represented by Ust-Nera), along with
2750 # most of Sakhalin Oblast (represented by Sakhalin) will be moving to UTC+10 on
2751 # 2014-10-26 to stay aligned with VLAT/SAKT; however, Severo-Kurilsky District
2752 # of the Sakhalin Oblast (also known as the North Kuril Islands, represented by
2753 # Severo-Kurilsk) will remain on UTC+11.
2755 # From Tim Parenti (2014-07-06):
2756 # Assume North Kuril Islands have history like Magadan before 2011-03-27.
2757 # There is a decent chance this is wrong, in which case a new zone
2758 # Asia/Severo-Kurilsk would become necessary.
2760 # Srednekolymsk and Zyryanka are the most populous places amongst these
2761 # districts, but have very similar populations. In fact, Wikipedia currently
2762 # lists them both as having 3528 people, exactly 1668 males and 1860 females
2764 # http://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276
2765 # http://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493
2766 # Assume this is a mistake, albeit an amusing one.
2768 # Looking at censuses, the populations of the two municipalities seem to have
2769 # fluctuated recently. Zyryanka was more populous than Srednekolymsk in the
2770 # 1989 and 2002 censuses, but Srednekolymsk was more populous in the most
2771 # recent (2010) census, 3525 to 3170. (See pages 195 and 197 of
2772 # http://www.gks.ru/free_doc/new_site/perepis2010/croc/Documents/Vol1/pub-01-05.pdf
2773 # in Russian.) In addition, Srednekolymsk appears to be a much older
2774 # settlement and the population of Zyryanka seems to be declining.
2775 # Go with Srednekolymsk.
2777 # Since Magadan Oblast moves to UTC+10 on 2014-10-26, we cannot keep using MAGT
2778 # as the abbreviation. Use SRET instead.
2780 Zone Asia/Srednekolymsk 10:14:52 - LMT 1924 May 2
2781 10:00 - MAGT 1930 Jun 21 # Magadan Time
2782 11:00 Russia MAG%sT 1991 Mar 31 2:00s
2783 10:00 Russia MAG%sT 1992 Jan 19 2:00s
2784 11:00 Russia MAG%sT 2011 Mar 27 2:00s
2785 12:00 - MAGT 2014 Oct 26 2:00s
2786 11:00 - SRET # Srednekolymsk Time
2789 # From Tim Parenti (2014-07-03):
2790 # Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
2791 # 14-22 **** Oymyakonsky District
2793 # From Arthur David Olson (2012-05-09):
2794 # Ojmyakonskij [and the Kuril Islands] switched from
2795 # Magadan time to Vladivostok time in 2011.
2797 # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
2798 # It's unlikely that any of the Kuril Islands were involved in such a switch,
2799 # as the South and Middle Kurils have been on UTC+11 (SAKT) with the rest of
2800 # Sakhalin Oblast since at least 2011-09, and the North Kurils have been on
2801 # UTC+12 since at least then, too.
2803 Zone Asia/Ust-Nera 9:32:54 - LMT 1919 Dec 15
2804 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2805 9:00 Russia YAKT 1981 Apr 1
2806 11:00 Russia MAG%sT 1991 Mar 31 2:00s
2807 10:00 Russia MAG%sT 1992 Jan 19 2:00s
2808 11:00 Russia MAG%sT 2011 Mar 27 2:00s
2809 12:00 - MAGT 2011 Sep 13 0:00s # Decree 725?
2810 11:00 - VLAT 2014 Oct 26 2:00s
2814 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2815 # Asia/Kamchatka covers...
2816 # 91 RU-KAM Kamchatka Krai
2818 # Note: Effective 2007-07-01, (41) Kamchatka Oblast and (82) Koryak
2819 # Autonomous Okrug merged to form (91, RU-KAM) Kamchatka Krai.
2821 # The Zone name should be Asia/Petropavlovsk-Kamchatski or perhaps
2822 # Asia/Petropavlovsk-Kamchatsky, but these are too long.
2823 Zone Asia/Kamchatka 10:34:36 - LMT 1922 Nov 10
2824 11:00 - PETT 1930 Jun 21 # P-K Time
2825 12:00 Russia PET%sT 1991 Mar 31 2:00s
2826 11:00 Russia PET%sT 1992 Jan 19 2:00s
2827 12:00 Russia PET%sT 2010 Mar 28 2:00s
2828 11:00 Russia PET%sT 2011 Mar 27 2:00s
2832 # From Tim Parenti (2014-07-03):
2833 # Asia/Anadyr covers...
2834 # 87 RU-CHU Chukotka Autonomous Okrug
2836 Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
2837 12:00 - ANAT 1930 Jun 21 # Anadyr Time
2838 13:00 Russia ANA%sT 1982 Apr 1 0:00s
2839 12:00 Russia ANA%sT 1991 Mar 31 2:00s
2840 11:00 Russia ANA%sT 1992 Jan 19 2:00s
2841 12:00 Russia ANA%sT 2010 Mar 28 2:00s
2842 11:00 Russia ANA%sT 2011 Mar 27 2:00s
2850 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2851 Zone Europe/Belgrade 1:22:00 - LMT 1884
2852 1:00 - CET 1941 Apr 18 23:00
2853 1:00 C-Eur CE%sT 1945
2854 1:00 - CET 1945 May 8 2:00s
2855 1:00 1:00 CEST 1945 Sep 16 2:00s
2856 # Metod Koželj reports that the legal date of
2857 # transition to EU rules was 1982-11-27, for all of Yugoslavia at the time.
2858 # Shanks & Pottenger don't give as much detail, so go with Koželj.
2859 1:00 - CET 1982 Nov 27
2861 Link Europe/Belgrade Europe/Ljubljana # Slovenia
2862 Link Europe/Belgrade Europe/Podgorica # Montenegro
2863 Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina
2864 Link Europe/Belgrade Europe/Skopje # Macedonia
2865 Link Europe/Belgrade Europe/Zagreb # Croatia
2868 Link Europe/Prague Europe/Bratislava
2871 # See Europe/Belgrade.
2874 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2875 # For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1;
2876 # go with Shanks & Pottenger.
2877 Rule Spain 1917 only - May 5 23:00s 1:00 S
2878 Rule Spain 1917 1919 - Oct 6 23:00s 0 -
2879 Rule Spain 1918 only - Apr 15 23:00s 1:00 S
2880 Rule Spain 1919 only - Apr 5 23:00s 1:00 S
2881 # Whitman gives 1921 Feb 28 - Oct 14; go with Shanks & Pottenger.
2882 Rule Spain 1924 only - Apr 16 23:00s 1:00 S
2883 # Whitman gives 1924 Oct 14; go with Shanks & Pottenger.
2884 Rule Spain 1924 only - Oct 4 23:00s 0 -
2885 Rule Spain 1926 only - Apr 17 23:00s 1:00 S
2886 # Whitman says no DST in 1929; go with Shanks & Pottenger.
2887 Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 -
2888 Rule Spain 1927 only - Apr 9 23:00s 1:00 S
2889 Rule Spain 1928 only - Apr 14 23:00s 1:00 S
2890 Rule Spain 1929 only - Apr 20 23:00s 1:00 S
2891 # Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13;
2892 # go with Shanks & Pottenger.
2893 Rule Spain 1937 only - May 22 23:00s 1:00 S
2894 Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
2895 Rule Spain 1938 only - Mar 22 23:00s 1:00 S
2896 Rule Spain 1939 only - Apr 15 23:00s 1:00 S
2897 Rule Spain 1940 only - Mar 16 23:00s 1:00 S
2898 # Whitman says no DST 1942-1945; go with Shanks & Pottenger.
2899 Rule Spain 1942 only - May 2 22:00s 2:00 M # Midsummer
2900 Rule Spain 1942 only - Sep 1 22:00s 1:00 S
2901 Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 M
2902 Rule Spain 1943 only - Oct 3 22:00s 1:00 S
2903 Rule Spain 1944 only - Oct 10 22:00s 1:00 S
2904 Rule Spain 1945 only - Sep 30 1:00 1:00 S
2905 Rule Spain 1946 only - Sep 30 0:00 0 -
2906 Rule Spain 1949 only - Apr 30 23:00 1:00 S
2907 Rule Spain 1949 only - Sep 30 1:00 0 -
2908 Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 S
2909 Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 -
2910 Rule Spain 1976 only - Mar 27 23:00 1:00 S
2911 Rule Spain 1976 1977 - Sep lastSun 1:00 0 -
2912 Rule Spain 1977 1978 - Apr 2 23:00 1:00 S
2913 Rule Spain 1978 only - Oct 1 1:00 0 -
2914 # The following rules are copied from Morocco from 1967 through 1978.
2915 Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S
2916 Rule SpainAfrica 1967 only - Oct 1 0:00 0 -
2917 Rule SpainAfrica 1974 only - Jun 24 0:00 1:00 S
2918 Rule SpainAfrica 1974 only - Sep 1 0:00 0 -
2919 Rule SpainAfrica 1976 1977 - May 1 0:00 1:00 S
2920 Rule SpainAfrica 1976 only - Aug 1 0:00 0 -
2921 Rule SpainAfrica 1977 only - Sep 28 0:00 0 -
2922 Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S
2923 Rule SpainAfrica 1978 only - Aug 4 0:00 0 -
2924 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2925 Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00s
2926 0:00 Spain WE%sT 1946 Sep 30
2927 1:00 Spain CE%sT 1979
2929 Zone Africa/Ceuta -0:21:16 - LMT 1901
2930 0:00 - WET 1918 May 6 23:00
2931 0:00 1:00 WEST 1918 Oct 7 23:00
2933 0:00 Spain WE%sT 1929
2934 0:00 SpainAfrica WE%sT 1984 Mar 16
2937 Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
2938 -1:00 - CANT 1946 Sep 30 1:00 # Canaries T
2939 0:00 - WET 1980 Apr 6 0:00s
2940 0:00 1:00 WEST 1980 Sep 28 1:00u
2942 # IATA SSIM (1996-09) says the Canaries switch at 2:00u, not 1:00u.
2943 # Ignore this for now, as the Canaries are part of the EU.
2947 # From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger:
2949 # The law "Svensk författningssamling 1878, no 14" about standard time in 1879:
2950 # From the beginning of 1879 (that is 01-01 00:00) the time for all
2951 # places in the country is "the mean solar time for the meridian at
2952 # three degrees, or twelve minutes of time, to the west of the
2953 # meridian of the Observatory of Stockholm". The law is dated 1878-05-31.
2955 # The observatory at that time had the meridian 18 degrees 03' 30"
2956 # eastern longitude = 01:12:14 in time. Less 12 minutes gives the
2957 # national standard time as 01:00:14 ahead of GMT....
2959 # About the beginning of CET in Sweden. The lawtext ("Svensk
2960 # författningssamling 1899, no 44") states, that "from the beginning
2961 # of 1900... ... the same as the mean solar time for the meridian at
2962 # the distance of one hour of time from the meridian of the English
2963 # observatory at Greenwich, or at 12 minutes 14 seconds to the west
2964 # from the meridian of the Observatory of Stockholm". The law is dated
2965 # 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time
2966 # in Sweden is 01:00:00 ahead of GMT.
2968 # 1916: The lawtext ("Svensk författningssamling 1916, no 124") states
2969 # that "1916-05-15 is considered to begin one hour earlier". It is
2970 # pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00....
2971 # Further the law says, that "1916-09-30 is considered to end one hour later".
2973 # The laws regulating [DST] are available on the site of the Swedish
2974 # Parliament beginning with 1985 - the laws regulating 1980/1984 are
2975 # not available on the site (to my knowledge they are only available
2976 # in Swedish): <http://www.riksdagen.se/english/work/sfst.asp> (type
2977 # "sommartid" without the quotes in the field "Fritext" and then click
2982 # I have now found a newspaper stating that at 1916-10-01 01:00
2983 # summertime the church-clocks etc were set back one hour to show
2984 # 1916-10-01 00:00 standard time. The article also reports that some
2985 # people thought the switch to standard time would take place already
2986 # at 1916-10-01 00:00 summer time, but they had to wait for another
2987 # hour before the event took place.
2989 # Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left.
2991 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2992 Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1
2993 1:00:14 - SET 1900 Jan 1 # Swedish Time
2994 1:00 - CET 1916 May 14 23:00
2995 1:00 1:00 CEST 1916 Oct 1 1:00
3001 # By the end of the 18th century clocks and watches became commonplace
3002 # and their performance improved enormously. Communities began to keep
3003 # mean time in preference to apparent time - Geneva from 1780 ....
3004 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3005 # From Whitman (who writes "Midnight?"):
3006 # Rule Swiss 1940 only - Nov 2 0:00 1:00 S
3007 # Rule Swiss 1940 only - Dec 31 0:00 0 -
3008 # From Shanks & Pottenger:
3009 # Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
3010 # Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
3012 # From Alois Treindl (2008-12-17):
3013 # I have researched the DST usage in Switzerland during the 1940ies.
3015 # As I wrote in an earlier message, I suspected the current tzdata values
3016 # to be wrong. This is now verified.
3018 # I have found copies of the original ruling by the Swiss Federal
3019 # government, in 'Eidgenössische Gesetzessammlung 1941 and 1942' (Swiss
3020 # federal law collection)...
3022 # DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am
3023 # DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am.
3025 # DST began on Monday, 4 May 1942 at 01:00 am
3026 # DST ended on Monday, 5 Oct 1942 at 02:00 am
3028 # There was no DST in 1940, I have checked the law collection carefully.
3029 # It is also indicated by the fact that the 1942 entry in the law
3030 # collection points back to 1941 as a reference, but no reference to any
3031 # other years are made.
3033 # Newspaper articles I have read in the archives on 6 May 1941 reported
3034 # about the introduction of DST (Sommerzeit in German) during the previous
3035 # night as an absolute novelty, because this was the first time that such
3036 # a thing had happened in Switzerland.
3038 # I have also checked 1916, because one book source (Gabriel, Traité de
3039 # l'heure dans le monde) claims that Switzerland had DST in 1916. This is
3040 # false, no official document could be found. Probably Gabriel got misled
3041 # by references to Germany, which introduced DST in 1916 for the first time.
3043 # The tzdata rules for Switzerland must be changed to:
3044 # Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
3045 # Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
3047 # The 1940 rules must be deleted.
3049 # One further detail for Switzerland, which is probably out of scope for
3050 # most users of tzdata: The [Europe/Zurich zone] ...
3051 # describes all of Switzerland correctly, with the exception of
3052 # the Canton de Genève (Geneva, Genf). Between 1848 and 1894 Geneva did not
3053 # follow Bern Mean Time but kept its own local mean time.
3054 # To represent this, an extra zone would be needed.
3056 # From Alois Treindl (2013-09-11):
3057 # The Federal regulations say
3058 # http://www.admin.ch/opc/de/classified-compilation/20071096/index.html
3059 # ... the meridian for Bern mean time ... is 7 degrees 26' 22.50".
3060 # Expressed in time, it is 0h29m45.5s.
3062 # From Pierre-Yves Berger (2013-09-11):
3063 # the "Circulaire du conseil fédéral" (December 11 1893)
3064 # http://www.amtsdruckschriften.bar.admin.ch/viewOrigDoc.do?id=10071353
3065 # clearly states that the [1894-06-01] change should be done at midnight
3066 # but if no one is present after 11 at night, could be postponed until one
3067 # hour before the beginning of service.
3069 # From Paul Eggert (2013-09-11):
3070 # Round BMT to the nearest even second, 0:29:46.
3072 # We can find no reliable source for Shanks's assertion that all of Switzerland
3073 # except Geneva switched to Bern Mean Time at 00:00 on 1848-09-12. This book:
3075 # Jakob Messerli. Gleichmässig, pünktlich, schnell. Zeiteinteilung und
3076 # Zeitgebrauch in der Schweiz im 19. Jahrhundert. Chronos, Zurich 1995,
3077 # ISBN 3-905311-68-2, OCLC 717570797.
3079 # suggests that the transition was more gradual, and that the Swiss did not
3080 # agree about civil time during the transition. The timekeeping it gives the
3081 # most detail for is postal and telegraph time: here, federal legislation (the
3082 # "Bundesgesetz über die Erstellung von elektrischen Telegraphen") passed on
3083 # 1851-11-23, and an official implementation notice was published 1853-07-16
3084 # (Bundesblatt 1853, Bd. II, S. 859). On p 72 Messerli writes that in
3085 # practice since July 1853 Bernese time was used in "all postal and telegraph
3086 # offices in Switzerland from Geneva to St. Gallen and Basel to Chiasso"
3087 # (Google translation). For now, model this transition as occurring on
3088 # 1853-07-16, though it probably occurred at some other date in Zurich, and
3089 # legal civil time probably changed at still some other transition date.
3091 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3092 Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
3093 Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
3094 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3095 Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment.
3096 0:29:46 - BMT 1894 Jun # Bern Mean Time
3097 1:00 Swiss CE%sT 1981
3102 # From Amar Devegowda (2007-01-03):
3103 # The time zone rules for Istanbul, Turkey have not been changed for years now.
3104 # ... The latest rules are available at:
3105 # http://www.timeanddate.com/worldclock/timezone.html?n=107
3106 # From Steffen Thorsen (2007-01-03):
3107 # I have been able to find press records back to 1996 which all say that
3108 # DST started 01:00 local time and end at 02:00 local time. I am not sure
3109 # what happened before that. One example for each year from 1996 to 2001:
3110 # http://newspot.byegm.gov.tr/arsiv/1996/21/N4.htm
3111 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING97/03/97X03X25.TXT
3112 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING98/03/98X03X02.HTM
3113 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING99/10/99X10X26.HTM#%2016
3114 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2000/03/00X03X06.HTM#%2021
3115 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2001/03/23x03x01.HTM#%2027
3116 # From Paul Eggert (2007-01-03):
3117 # Prefer the above source to Shanks & Pottenger for time stamps after 1990.
3119 # From Steffen Thorsen (2007-03-09):
3120 # Starting 2007 though, it seems that they are adopting EU's 1:00 UTC
3121 # start/end time, according to the following page (2007-03-07):
3122 # http://www.ntvmsnbc.com/news/402029.asp
3123 # The official document is located here - it is in Turkish...:
3124 # http://rega.basbakanlik.gov.tr/eskiler/2007/03/20070307-7.htm
3125 # I was able to locate the following seemingly official document
3126 # (on a non-government server though) describing dates between 2002 and 2006:
3127 # http://www.alomaliye.com/bkk_2002_3769.htm
3129 # From Gökdeniz Karadağ (2011-03-10):
3130 # According to the articles linked below, Turkey will change into summer
3131 # time zone (GMT+3) on March 28, 2011 at 3:00 a.m. instead of March 27.
3132 # This change is due to a nationwide exam on 27th.
3133 # http://www.worldbulletin.net/?aType=haber&ArticleID=70872
3135 # http://www.hurriyet.com.tr/ekonomi/17230464.asp?gid=373
3137 # From Faruk Pasin (2014-02-14):
3138 # The DST for Turkey has been changed for this year because of the
3139 # Turkish Local election....
3140 # http://www.sabah.com.tr/Ekonomi/2014/02/12/yaz-saatinde-onemli-degisiklik
3141 # ... so Turkey will move clocks forward one hour on March 31 at 3:00 a.m.
3142 # From Randal L. Schwartz (2014-04-15):
3143 # Having landed on a flight from the states to Istanbul (via AMS) on March 31,
3144 # I can tell you that NOBODY (even the airlines) respected this timezone DST
3145 # change delay. Maybe the word just didn't get out in time.
3146 # From Paul Eggert (2014-06-15):
3147 # The press reported massive confusion, as election officials obeyed the rule
3148 # change but cell phones (and airline baggage systems) did not. See:
3149 # Kostidis M. Eventful elections in Turkey. Balkan News Agency
3150 # http://www.balkaneu.com/eventful-elections-turkey/ 2014-03-30.
3151 # I guess the best we can do is document the official time.
3153 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3154 Rule Turkey 1916 only - May 1 0:00 1:00 S
3155 Rule Turkey 1916 only - Oct 1 0:00 0 -
3156 Rule Turkey 1920 only - Mar 28 0:00 1:00 S
3157 Rule Turkey 1920 only - Oct 25 0:00 0 -
3158 Rule Turkey 1921 only - Apr 3 0:00 1:00 S
3159 Rule Turkey 1921 only - Oct 3 0:00 0 -
3160 Rule Turkey 1922 only - Mar 26 0:00 1:00 S
3161 Rule Turkey 1922 only - Oct 8 0:00 0 -
3162 # Whitman gives 1923 Apr 28 - Sep 16 and no DST in 1924-1925;
3163 # go with Shanks & Pottenger.
3164 Rule Turkey 1924 only - May 13 0:00 1:00 S
3165 Rule Turkey 1924 1925 - Oct 1 0:00 0 -
3166 Rule Turkey 1925 only - May 1 0:00 1:00 S
3167 Rule Turkey 1940 only - Jun 30 0:00 1:00 S
3168 Rule Turkey 1940 only - Oct 5 0:00 0 -
3169 Rule Turkey 1940 only - Dec 1 0:00 1:00 S
3170 Rule Turkey 1941 only - Sep 21 0:00 0 -
3171 Rule Turkey 1942 only - Apr 1 0:00 1:00 S
3172 # Whitman omits the next two transition and gives 1945 Oct 1;
3173 # go with Shanks & Pottenger.
3174 Rule Turkey 1942 only - Nov 1 0:00 0 -
3175 Rule Turkey 1945 only - Apr 2 0:00 1:00 S
3176 Rule Turkey 1945 only - Oct 8 0:00 0 -
3177 Rule Turkey 1946 only - Jun 1 0:00 1:00 S
3178 Rule Turkey 1946 only - Oct 1 0:00 0 -
3179 Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 S
3180 Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 -
3181 Rule Turkey 1949 only - Apr 10 0:00 1:00 S
3182 Rule Turkey 1950 only - Apr 19 0:00 1:00 S
3183 Rule Turkey 1951 only - Apr 22 0:00 1:00 S
3184 Rule Turkey 1951 only - Oct 8 0:00 0 -
3185 Rule Turkey 1962 only - Jul 15 0:00 1:00 S
3186 Rule Turkey 1962 only - Oct 8 0:00 0 -
3187 Rule Turkey 1964 only - May 15 0:00 1:00 S
3188 Rule Turkey 1964 only - Oct 1 0:00 0 -
3189 Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 S
3190 Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 -
3191 Rule Turkey 1973 only - Jun 3 1:00 1:00 S
3192 Rule Turkey 1973 only - Nov 4 3:00 0 -
3193 Rule Turkey 1974 only - Mar 31 2:00 1:00 S
3194 Rule Turkey 1974 only - Nov 3 5:00 0 -
3195 Rule Turkey 1975 only - Mar 30 0:00 1:00 S
3196 Rule Turkey 1975 1976 - Oct lastSun 0:00 0 -
3197 Rule Turkey 1976 only - Jun 1 0:00 1:00 S
3198 Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 S
3199 Rule Turkey 1977 only - Oct 16 0:00 0 -
3200 Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 S
3201 Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 -
3202 Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 S
3203 Rule Turkey 1983 only - Jul 31 0:00 1:00 S
3204 Rule Turkey 1983 only - Oct 2 0:00 0 -
3205 Rule Turkey 1985 only - Apr 20 0:00 1:00 S
3206 Rule Turkey 1985 only - Sep 28 0:00 0 -
3207 Rule Turkey 1986 1990 - Mar lastSun 2:00s 1:00 S
3208 Rule Turkey 1986 1990 - Sep lastSun 2:00s 0 -
3209 Rule Turkey 1991 2006 - Mar lastSun 1:00s 1:00 S
3210 Rule Turkey 1991 1995 - Sep lastSun 1:00s 0 -
3211 Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 -
3212 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3213 Zone Europe/Istanbul 1:55:52 - LMT 1880
3214 1:56:56 - IMT 1910 Oct # Istanbul Mean Time?
3215 2:00 Turkey EE%sT 1978 Oct 15
3216 3:00 Turkey TR%sT 1985 Apr 20 # Turkey Time
3217 2:00 Turkey EE%sT 2007
3218 2:00 EU EE%sT 2011 Mar 27 1:00u
3219 2:00 - EET 2011 Mar 28 1:00u
3220 2:00 EU EE%sT 2014 Mar 30 1:00u
3221 2:00 - EET 2014 Mar 31 1:00u
3223 Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
3227 # From Igor Karpov, who works for the Ukrainian Ministry of Justice,
3228 # via Garrett Wollman (2003-01-27):
3229 # BTW, I've found the official document on this matter. It's government
3230 # regulations No. 509, May 13, 1996. In my poor translation it says:
3231 # "Time in Ukraine is set to second timezone (Kiev time). Each last Sunday
3232 # of March at 3am the time is changing to 4am and each last Sunday of
3233 # October the time at 4am is changing to 3am"
3235 # From Alexander Krivenyshev (2011-09-20):
3236 # On September 20, 2011 the deputies of the Verkhovna Rada agreed to
3237 # abolish the transfer clock to winter time.
3239 # Bill No. 8330 of MP from the Party of Regions Oleg Nadoshi got
3240 # approval from 266 deputies.
3242 # Ukraine abolishes transfer back to the winter time (in Russian)
3243 # http://news.mail.ru/politics/6861560/
3245 # The Ukrainians will no longer change the clock (in Russian)
3246 # http://www.segodnya.ua/news/14290482.html
3248 # Deputies cancelled the winter time (in Russian)
3249 # http://www.pravda.com.ua/rus/news/2011/09/20/6600616/
3251 # From Philip Pizzey (2011-10-18):
3252 # Today my Ukrainian colleagues have informed me that the
3253 # Ukrainian parliament have decided that they will go to winter
3254 # time this year after all.
3256 # From Udo Schwedt (2011-10-18):
3257 # As far as I understand, the recent change to the Ukrainian time zone
3258 # (Europe/Kiev) to introduce permanent daylight saving time (similar
3259 # to Russia) was reverted today:
3260 # http://portal.rada.gov.ua/rada/control/en/publish/article/info_left?art_id=287324&cat_id=105995
3262 # Also reported by Alexander Bokovoy (2011-10-18) who also noted:
3263 # The law documents themselves are at
3264 # http://w1.c1.rada.gov.ua/pls/zweb_n/webproc4_1?id=&pf3511=41484
3266 # From Vladimir in Moscow via Alois Treindl re Kiev time 1991/2 (2014-02-28):
3267 # First in Ukraine they changed Time zone from UTC+3 to UTC+2 with DST:
3268 # 03 25 1990 02:00 -03.00 1 Time Zone 3 with DST
3269 # 07 01 1990 02:00 -02.00 1 Time Zone 2 with DST
3270 # * Ukrainian Government's Resolution of 18.06.1990, No. 134.
3271 # http://search.ligazakon.ua/l_doc2.nsf/link1/T001500.html
3273 # They did not end DST in September, 1990 (according to the law,
3274 # "summer time" was still in action):
3275 # 09 30 1990 03:00 -02.00 1 Time Zone 2 with DST
3276 # * Ukrainian Government's Resolution of 21.09.1990, No. 272.
3277 # http://search.ligazakon.ua/l_doc2.nsf/link1/KP900272.html
3279 # Again no change in March, 1991 ("summer time" in action):
3280 # 03 31 1991 02:00 -02.00 1 Time Zone 2 with DST
3282 # DST ended in September 1991 ("summer time" ended):
3283 # 09 29 1991 03:00 -02.00 0 Time Zone 2, no DST
3284 # * Ukrainian Government's Resolution of 25.09.1991, No. 225.
3285 # http://www.uazakon.com/documents/date_21/pg_iwgdoc.htm
3286 # This is an answer.
3288 # Since 1992 they had normal DST procedure:
3289 # 03 29 1992 02:00 -02.00 1 DST started
3290 # 09 27 1992 03:00 -02.00 0 DST ended
3291 # * Ukrainian Government's Resolution of 20.03.1992, No. 139.
3292 # http://www.uazakon.com/documents/date_8u/pg_grcasa.htm
3294 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3295 # Most of Ukraine since 1970 has been like Kiev.
3296 # "Kyiv" is the transliteration of the Ukrainian name, but
3297 # "Kiev" is more common in English.
3298 Zone Europe/Kiev 2:02:04 - LMT 1880
3299 2:02:04 - KMT 1924 May 2 # Kiev Mean Time
3300 2:00 - EET 1930 Jun 21
3301 3:00 - MSK 1941 Sep 20
3302 1:00 C-Eur CE%sT 1943 Nov 6
3303 3:00 Russia MSK/MSD 1990 Jul 1 2:00
3304 2:00 1:00 EEST 1991 Sep 29 3:00
3305 2:00 E-Eur EE%sT 1995
3307 # Ruthenia used CET 1990/1991.
3308 # "Uzhhorod" is the transliteration of the Rusyn/Ukrainian pronunciation, but
3309 # "Uzhgorod" is more common in English.
3310 Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct
3312 1:00 C-Eur CE%sT 1944 Oct
3313 1:00 1:00 CEST 1944 Oct 26
3314 1:00 - CET 1945 Jun 29
3315 3:00 Russia MSK/MSD 1990
3316 3:00 - MSK 1990 Jul 1 2:00
3317 1:00 - CET 1991 Mar 31 3:00
3319 2:00 E-Eur EE%sT 1995
3321 # Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991.
3322 # "Zaporizhia" is the transliteration of the Ukrainian name, but
3323 # "Zaporozh'ye" is more common in English. Use the common English
3324 # spelling, except omit the apostrophe as it is not allowed in
3325 # portable Posix file names.
3326 Zone Europe/Zaporozhye 2:20:40 - LMT 1880
3327 2:20 - CUT 1924 May 2 # Central Ukraine T
3328 2:00 - EET 1930 Jun 21
3329 3:00 - MSK 1941 Aug 25
3330 1:00 C-Eur CE%sT 1943 Oct 25
3331 3:00 Russia MSK/MSD 1991 Mar 31 2:00
3332 2:00 E-Eur EE%sT 1995
3338 ###############################################################################
3340 # One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
3341 # the last Sunday in March to the last Sunday in September in 1986.
3342 # The source shows Romania changing a day later than everybody else.
3344 # According to Bernard Sieloff's source, Poland is in the MET time zone but
3345 # uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules.
3346 # Bernard Sieloff's source claims Romania switches on the same day, but at
3347 # 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey
3348 # switches on the same day, but switches on at 01:00 standard time
3349 # and off at 00:00 standard time (i.e., 01:00 DST)
3352 # Date: Wed, 28 Jan 87 16:56:27 -0100
3356 # ...the European time rules are...standardized since 1981, when
3357 # most European countries started DST. Before that year, only
3358 # a few countries (UK, France, Italy) had DST, each according
3359 # to own national rules. In 1981, however, DST started on
3360 # 'Apr firstSun', and not on 'Mar lastSun' as in the following
3362 # But also since 1981 there are some more national exceptions
3363 # than listed in 'europe': Switzerland, for example, joined DST
3364 # one year later, Denmark ended DST on 'Oct 1' instead of 'Sep
3365 # lastSun' in 1981 - I don't know how they handle now.
3367 # Finally, DST ist always from 'Apr 1' to 'Oct 1' in the
3368 # Soviet Union (as far as I know).
3370 # Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG,
3371 # 4002 Basle, Switzerland
3375 # Date: Wed, 4 Feb 87 22:35:22 +0100
3376 # From: Dik T. Winter
3379 # The information from Tom Hofmann is (as far as I know) not entirely correct.
3380 # After a request from chongo at amdahl I tried to retrieve all information
3381 # about DST in Europe. I was able to find all from about 1969.
3383 # ...standardization on DST in Europe started in about 1977 with switches on
3384 # first Sunday in April and last Sunday in September...
3385 # In 1981 UK joined Europe insofar that
3386 # the starting day for both shifted to last Sunday in March. And from 1982
3387 # the whole of Europe used DST, with switch dates April 1 and October 1 in
3388 # the Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch
3391 # It should also be remembered that time-zones are not constants; e.g.
3392 # Portugal switched in 1976 from MET (or CET) to WET with DST...
3393 # Note also that though there were rules for switch dates not
3394 # all countries abided to these dates, and many individual deviations
3395 # occurred, though not since 1982 I believe. Another note: it is always
3396 # assumed that DST is 1 hour ahead of normal time, this need not be the
3397 # case; at least in the Netherlands there have been times when DST was 2 hours
3398 # in advance of normal time.
3401 # dik t. winter, cwi, amsterdam, nederland
3404 # From Bob Devine (1988-01-28):
3406 # Greece: Last Sunday in April to last Sunday in September (iffy on dates).
3407 # Since 1978. Change at midnight.
3409 # Monaco: has same DST as France.
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