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 (2014-05-31):
10 # A good source for time zone historical data outside the U.S. is
11 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
12 # San Diego: ACS Publications, Inc. (2003).
14 # Gwillim Law writes that a good source
15 # for recent time zone data is the International Air Transport
16 # Association's Standard Schedules Information Manual (IATA SSIM),
17 # published semiannually. Law sent in several helpful summaries
18 # of the IATA's data after 1990.
20 # A reliable and entertaining source about time zones is
21 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
23 # Except where otherwise noted, Shanks & Pottenger is the source for
24 # entries through 1991, and IATA SSIM is the source for entries afterwards.
26 # Other sources occasionally used include:
28 # Edward W. Whitman, World Time Differences,
29 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
30 # which I found in the UCLA library.
32 # William Willett, The Waste of Daylight, 19th edition
33 # <http://cs.ucla.edu/~eggert/The-Waste-of-Daylight-19th.pdf>
36 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94
37 # <http://www.jstor.org/stable/1774359>. He writes:
38 # "It is requested that corrections and additions to these tables
39 # may be sent to Mr. John Milne, Royal Geographical Society,
40 # Savile Row, London." Nowadays please email them to tz@iana.org.
42 # Byalokoz EL. New Counting of Time in Russia since July 1, 1919.
43 # This Russian-language source was consulted by Vladimir Karpinsky; see
44 # http://mm.icann.org/pipermail/tz/2014-August/021320.html
45 # The full Russian citation is:
46 # Бялокоз, Евгений Людвигович. Новый счет времени в течении суток
47 # введенный декретом Совета народных комиссаров для всей России с 1-го
48 # июля 1919 г. / Изд. 2-е Междуведомственной комиссии. - Петроград:
49 # Десятая гос. тип., 1919.
50 # http://resolver.gpntb.ru/purl?docushare/dsweb/Get/Resource-2011/Byalokoz__E.L.__Novyy__schet__vremeni__v__techenie__sutok__izd__2(1).pdf
52 # Brazil's Divisão Serviço da Hora (DSHO),
53 # History of Summer Time
54 # <http://pcdsh01.on.br/HISTHV.htm>
55 # (1998-09-21, in Portuguese)
58 # I invented the abbreviations marked '*' in the following table;
59 # the rest are from earlier versions of this file, or from other sources.
60 # Corrections are welcome!
63 # -4:00 AST ADT Atlantic
64 # -3:00 WGT WGST Western Greenland*
65 # -1:00 EGT EGST Eastern Greenland*
66 # 0:00 GMT BST BDST Greenwich, British Summer
67 # 0:00 GMT IST Greenwich, Irish Summer
68 # 0:00 WET WEST WEMT Western Europe
69 # 0:19:32.13 AMT NST Amsterdam, Netherlands Summer (1835-1937)*
70 # 0:20 NET NEST Netherlands (1937-1940)*
71 # 1:00 BST British Standard (1968-1971)
72 # 1:00 CET CEST CEMT Central Europe
73 # 1:00:14 SET Swedish (1879-1899)*
74 # 2:00 EET EEST Eastern Europe
75 # 3:00 FET Further-eastern Europe*
76 # 3:00 MSK MSD MSM* Moscow
78 # From Peter Ilieve (1994-12-04),
79 # The original six [EU members]: Belgium, France, (West) Germany, Italy,
80 # Luxembourg, the Netherlands.
81 # Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom.
82 # Plus, from 1 Jan 81: Greece.
83 # Plus, from 1 Jan 86: Spain, Portugal.
84 # Plus, from 1 Jan 95: Austria, Finland, Sweden. (Norway negotiated terms for
85 # entry but in a referendum on 28 Nov 94 the people voted No by 52.2% to 47.8%
86 # on a turnout of 88.6%. This was almost the same result as Norway's previous
87 # referendum in 1972, they are the only country to have said No twice.
88 # Referendums in the other three countries voted Yes.)
90 # Estonia ... uses EU dates but not at 01:00 GMT, they use midnight GMT.
91 # I don't think they know yet what they will do from 1996 onwards.
93 # There shouldn't be any [current members who are not using EU rules].
94 # A Directive has the force of law, member states are obliged to enact
95 # national law to implement it. The only contentious issue was the
96 # different end date for the UK and Ireland, and this was always allowed
100 ###############################################################################
102 # Britain (United Kingdom) and Ireland (Eire)
104 # From Peter Ilieve (1994-07-06):
106 # On 17 Jan 1994 the Independent, a UK quality newspaper, had a piece about
107 # historical vistas along the Thames in west London. There was a photo
108 # and a sketch map showing some of the sightlines involved. One paragraph
111 # 'An old stone obelisk marking a forgotten terrestrial meridian stands
112 # beside the river at Kew. In the 18th century, before time and longitude
113 # was standardised by the Royal Observatory in Greenwich, scholars observed
114 # this stone and the movement of stars from Kew Observatory nearby. They
115 # made their calculations and set the time for the Horse Guards and Parliament,
116 # but now the stone is obscured by scrubwood and can only be seen by walking
117 # along the towpath within a few yards of it.'
119 # I have a one inch to one mile map of London and my estimate of the stone's
120 # position is 51 degrees 28' 30" N, 0 degrees 18' 45" W. The longitude should
121 # be within about +-2". The Ordnance Survey grid reference is TQ172761.
123 # [This yields GMTOFF = -0:01:15 for London LMT in the 18th century.]
125 # From Paul Eggert (1993-11-18):
127 # Howse writes that Britain was the first country to use standard time.
128 # The railways cared most about the inconsistencies of local mean time,
129 # and it was they who forced a uniform time on the country.
130 # The original idea was credited to Dr. William Hyde Wollaston (1766-1828)
131 # and was popularized by Abraham Follett Osler (1808-1903).
132 # The first railway to adopt London time was the Great Western Railway
133 # in November 1840; other railways followed suit, and by 1847 most
134 # (though not all) railways used London time. On 1847-09-22 the
135 # Railway Clearing House, an industry standards body, recommended that GMT be
136 # adopted at all stations as soon as the General Post Office permitted it.
137 # The transition occurred on 12-01 for the L&NW, the Caledonian,
138 # and presumably other railways; the January 1848 Bradshaw's lists many
139 # railways as using GMT. By 1855 the vast majority of public
140 # clocks in Britain were set to GMT (though some, like the great clock
141 # on Tom Tower at Christ Church, Oxford, were fitted with two minute hands,
142 # one for local time and one for GMT). The last major holdout was the legal
143 # system, which stubbornly stuck to local time for many years, leading
144 # to oddities like polls opening at 08:13 and closing at 16:13.
145 # The legal system finally switched to GMT when the Statutes (Definition
146 # of Time) Act took effect; it received the Royal Assent on 1880-08-02.
148 # In the tables below, we condense this complicated story into a single
149 # transition date for London, namely 1847-12-01. We don't know as much
150 # about Dublin, so we use 1880-08-02, the legal transition time.
152 # From Paul Eggert (2014-07-19):
153 # The ancients had no need for daylight saving, as they kept time
154 # informally or via hours whose length depended on the time of year.
155 # Daylight saving time in its modern sense was invented by the
156 # New Zealand entomologist George Vernon Hudson (1867-1946),
157 # whose day job as a postal clerk led him to value
158 # after-hours daylight in which to pursue his research.
159 # In 1895 he presented a paper to the Wellington Philosophical Society
160 # that proposed a two-hour daylight-saving shift. See:
161 # Hudson GV. On seasonal time-adjustment in countries south of lat. 30 deg.
162 # Transactions and Proceedings of the New Zealand Institute. 1895;28:734
163 # http://rsnz.natlib.govt.nz/volume/rsnz_28/rsnz_28_00_006110.html
164 # Although some interest was expressed in New Zealand, his proposal
165 # did not find its way into law and eventually it was almost forgotten.
167 # In England, DST was independently reinvented by William Willett (1857-1915),
168 # a London builder and member of the Royal Astronomical Society
169 # who circulated a pamphlet "The Waste of Daylight" (1907)
170 # that proposed advancing clocks 20 minutes on each of four Sundays in April,
171 # and retarding them by the same amount on four Sundays in September.
172 # A bill was drafted in 1909 and introduced in Parliament several times,
173 # but it met with ridicule and opposition, especially from farming interests.
174 # Later editions of the pamphlet proposed one-hour summer time, and
175 # it was eventually adopted as a wartime measure in 1916.
176 # See: Summer Time Arrives Early, The Times (2000-05-18).
177 # A monument to Willett was unveiled on 1927-05-21, in an open space in
178 # a 45-acre wood near Chislehurst, Kent that was purchased by popular
179 # subscription and open to the public. On the south face of the monolith,
180 # designed by G. W. Miller, is the William Willett Memorial Sundial,
181 # which is permanently set to Summer Time.
183 # From Winston Churchill (1934-04-28):
184 # It is one of the paradoxes of history that we should owe the boon of
185 # summer time, which gives every year to the people of this country
186 # between 160 and 170 hours more daylight leisure, to a war which
187 # plunged Europe into darkness for four years, and shook the
188 # foundations of civilization throughout the world.
189 # -- "A Silent Toast to William Willett", Pictorial Weekly;
190 # republished in Finest Hour (Spring 2002) 1(114):26
191 # http://www.winstonchurchill.org/images/finesthour/Vol.01%20No.114.pdf
193 # From Paul Eggert (1996-09-03):
194 # The OED Supplement says that the English originally said "Daylight Saving"
195 # when they were debating the adoption of DST in 1908; but by 1916 this
196 # term appears only in quotes taken from DST's opponents, whereas the
197 # proponents (who eventually won the argument) are quoted as using "Summer".
199 # From Arthur David Olson (1989-01-19):
200 # A source at the British Information Office in New York avers that it's
201 # known as "British" Summer Time in all parts of the United Kingdom.
203 # Date: 4 Jan 89 08:57:25 GMT (Wed)
204 # From: Jonathan Leffler
205 # [British Summer Time] is fixed annually by Act of Parliament.
206 # If you can predict what Parliament will do, you should be in
207 # politics making a fortune, not computing.
209 # From Chris Carrier (1996-06-14):
210 # I remember reading in various wartime issues of the London Times the
211 # acronym BDST for British Double Summer Time. Look for the published
212 # time of sunrise and sunset in The Times, when BDST was in effect, and
213 # if you find a zone reference it will say, "All times B.D.S.T."
215 # From Joseph S. Myers (1999-09-02):
216 # ... some military cables (WO 219/4100 - this is a copy from the
217 # main SHAEF archives held in the US National Archives, SHAEF/5252/8/516)
218 # agree that the usage is BDST (this appears in a message dated 17 Feb 1945).
220 # From Joseph S. Myers (2000-10-03):
221 # On 18th April 1941, Sir Stephen Tallents of the BBC wrote to Sir
222 # Alexander Maxwell of the Home Office asking whether there was any
223 # official designation; the reply of the 21st was that there wasn't
224 # but he couldn't think of anything better than the "Double British
225 # Summer Time" that the BBC had been using informally.
226 # http://www.polyomino.org.uk/british-time/bbc-19410418.png
227 # http://www.polyomino.org.uk/british-time/ho-19410421.png
229 # From Sir Alexander Maxwell in the above-mentioned letter (1941-04-21):
230 # [N]o official designation has as far as I know been adopted for the time
231 # which is to be introduced in May....
232 # I cannot think of anything better than "Double British Summer Time"
233 # which could not be said to run counter to any official description.
235 # From Paul Eggert (2000-10-02):
236 # Howse writes (p 157) 'DBST' too, but 'BDST' seems to have been common
237 # and follows the more usual convention of putting the location name first,
240 # Peter Ilieve (1998-04-19) described at length
241 # the history of summer time legislation in the United Kingdom.
242 # Since 1998 Joseph S. Myers has been updating
243 # and extending this list, which can be found in
244 # http://www.polyomino.org.uk/british-time/
246 # From Joseph S. Myers (1998-01-06):
248 # The legal time in the UK outside of summer time is definitely GMT, not UTC;
249 # see Lord Tanlaw's speech
250 # http://www.publications.parliament.uk/pa/ld199798/ldhansrd/vo970611/text/70611-10.htm#70611-10_head0
251 # (Lords Hansard 11 June 1997 columns 964 to 976).
253 # From Paul Eggert (2006-03-22):
255 # For lack of other data, follow Shanks & Pottenger for Eire in 1940-1948.
257 # Given Ilieve and Myers's data, the following claims by Shanks & Pottenger
259 # * Wales did not switch from GMT to daylight saving time until
260 # 1921 Apr 3, when they began to conform with the rest of Great Britain.
261 # Actually, Wales was identical after 1880.
262 # * Eire had two transitions on 1916 Oct 1.
263 # It actually just had one transition.
264 # * Northern Ireland used single daylight saving time throughout WW II.
265 # Actually, it conformed to Britain.
266 # * GB-Eire changed standard time to 1 hour ahead of GMT on 1968-02-18.
267 # Actually, that date saw the usual switch to summer time.
268 # Standard time was not changed until 1968-10-27 (the clocks didn't change).
270 # Here is another incorrect claim by Shanks & Pottenger:
271 # * Jersey, Guernsey, and the Isle of Man did not switch from GMT
272 # to daylight saving time until 1921 Apr 3, when they began to
273 # conform with Great Britain.
274 # S.R.&O. 1916, No. 382 and HO 45/10811/312364 (quoted above) say otherwise.
276 # The following claim by Shanks & Pottenger is possible though doubtful;
277 # we'll ignore it for now.
278 # * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00.
281 # Whitman says Dublin Mean Time was -0:25:21, which is more precise than
282 # Shanks & Pottenger.
283 # Perhaps this was Dunsink Observatory Time, as Dunsink Observatory
284 # (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was
285 # to London. For example:
287 # "Timeball on the ballast office is down. Dunsink time."
288 # -- James Joyce, Ulysses
290 # From Joseph S. Myers (2005-01-26):
291 # Irish laws are available online at <http://www.irishstatutebook.ie>.
292 # These include various relating to legal time, for example:
294 # ZZA13Y1923.html ZZA12Y1924.html ZZA8Y1925.html ZZSIV20PG1267.html
296 # ZZSI71Y1947.html ZZSI128Y1948.html ZZSI23Y1949.html ZZSI41Y1950.html
297 # ZZSI27Y1951.html ZZSI73Y1952.html
299 # ZZSI11Y1961.html ZZSI232Y1961.html ZZSI182Y1962.html
300 # ZZSI167Y1963.html ZZSI257Y1964.html ZZSI198Y1967.html
301 # ZZA23Y1968.html ZZA17Y1971.html
303 # ZZSI67Y1981.html ZZSI212Y1982.html ZZSI45Y1986.html
304 # ZZSI264Y1988.html ZZSI52Y1990.html ZZSI371Y1992.html
305 # ZZSI395Y1994.html ZZSI484Y1997.html ZZSI506Y2001.html
307 # [These are all relative to the root, e.g., the first is
308 # <http://www.irishstatutebook.ie/ZZA13Y1923.html>.]
310 # (These are those I found, but there could be more. In any case these
311 # should allow various updates to the comments in the europe file to cover
312 # the laws applicable in Ireland.)
314 # (Note that the time in the Republic of Ireland since 1968 has been defined
315 # in terms of standard time being GMT+1 with a period of winter time when it
316 # is GMT, rather than standard time being GMT with a period of summer time
319 # From Paul Eggert (1999-03-28):
320 # Clive Feather (<news:859845706.26043.0@office.demon.net>, 1997-03-31)
321 # reports that Folkestone (Cheriton) Shuttle Terminal uses Concession Time
322 # (CT), equivalent to French civil time.
323 # Julian Hill (<news:36118128.5A14@virgin.net>, 1998-09-30) reports that
324 # trains between Dollands Moor (the freight facility next door)
325 # and Frethun run in CT.
326 # My admittedly uninformed guess is that the terminal has two authorities,
327 # the French concession operators and the British civil authorities,
328 # and that the time depends on who you're talking to.
329 # If, say, the British police were called to the station for some reason,
330 # I would expect the official police report to use GMT/BST and not CET/CEST.
331 # This is a borderline case, but for now let's stick to GMT/BST.
333 # From an anonymous contributor (1996-06-02):
334 # The law governing time in Ireland is under Statutory Instrument SI 395/94,
335 # which gives force to European Union 7th Council Directive # 94/21/EC.
336 # Under this directive, the Minister for Justice in Ireland makes appropriate
337 # regulations. I spoke this morning with the Secretary of the Department of
338 # Justice (tel +353 1 678 9711) who confirmed to me that the correct name is
339 # "Irish Summer Time", abbreviated to "IST".
341 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
342 # Summer Time Act, 1916
343 Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST
344 Rule GB-Eire 1916 only - Oct 1 2:00s 0 GMT
345 # S.R.&O. 1917, No. 358
346 Rule GB-Eire 1917 only - Apr 8 2:00s 1:00 BST
347 Rule GB-Eire 1917 only - Sep 17 2:00s 0 GMT
348 # S.R.&O. 1918, No. 274
349 Rule GB-Eire 1918 only - Mar 24 2:00s 1:00 BST
350 Rule GB-Eire 1918 only - Sep 30 2:00s 0 GMT
351 # S.R.&O. 1919, No. 297
352 Rule GB-Eire 1919 only - Mar 30 2:00s 1:00 BST
353 Rule GB-Eire 1919 only - Sep 29 2:00s 0 GMT
354 # S.R.&O. 1920, No. 458
355 Rule GB-Eire 1920 only - Mar 28 2:00s 1:00 BST
356 # S.R.&O. 1920, No. 1844
357 Rule GB-Eire 1920 only - Oct 25 2:00s 0 GMT
358 # S.R.&O. 1921, No. 363
359 Rule GB-Eire 1921 only - Apr 3 2:00s 1:00 BST
360 Rule GB-Eire 1921 only - Oct 3 2:00s 0 GMT
361 # S.R.&O. 1922, No. 264
362 Rule GB-Eire 1922 only - Mar 26 2:00s 1:00 BST
363 Rule GB-Eire 1922 only - Oct 8 2:00s 0 GMT
364 # The Summer Time Act, 1922
365 Rule GB-Eire 1923 only - Apr Sun>=16 2:00s 1:00 BST
366 Rule GB-Eire 1923 1924 - Sep Sun>=16 2:00s 0 GMT
367 Rule GB-Eire 1924 only - Apr Sun>=9 2:00s 1:00 BST
368 Rule GB-Eire 1925 1926 - Apr Sun>=16 2:00s 1:00 BST
369 # The Summer Time Act, 1925
370 Rule GB-Eire 1925 1938 - Oct Sun>=2 2:00s 0 GMT
371 Rule GB-Eire 1927 only - Apr Sun>=9 2:00s 1:00 BST
372 Rule GB-Eire 1928 1929 - Apr Sun>=16 2:00s 1:00 BST
373 Rule GB-Eire 1930 only - Apr Sun>=9 2:00s 1:00 BST
374 Rule GB-Eire 1931 1932 - Apr Sun>=16 2:00s 1:00 BST
375 Rule GB-Eire 1933 only - Apr Sun>=9 2:00s 1:00 BST
376 Rule GB-Eire 1934 only - Apr Sun>=16 2:00s 1:00 BST
377 Rule GB-Eire 1935 only - Apr Sun>=9 2:00s 1:00 BST
378 Rule GB-Eire 1936 1937 - Apr Sun>=16 2:00s 1:00 BST
379 Rule GB-Eire 1938 only - Apr Sun>=9 2:00s 1:00 BST
380 Rule GB-Eire 1939 only - Apr Sun>=16 2:00s 1:00 BST
381 # S.R.&O. 1939, No. 1379
382 Rule GB-Eire 1939 only - Nov Sun>=16 2:00s 0 GMT
383 # S.R.&O. 1940, No. 172 and No. 1883
384 Rule GB-Eire 1940 only - Feb Sun>=23 2:00s 1:00 BST
385 # S.R.&O. 1941, No. 476
386 Rule GB-Eire 1941 only - May Sun>=2 1:00s 2:00 BDST
387 Rule GB-Eire 1941 1943 - Aug Sun>=9 1:00s 1:00 BST
388 # S.R.&O. 1942, No. 506
389 Rule GB-Eire 1942 1944 - Apr Sun>=2 1:00s 2:00 BDST
390 # S.R.&O. 1944, No. 932
391 Rule GB-Eire 1944 only - Sep Sun>=16 1:00s 1:00 BST
392 # S.R.&O. 1945, No. 312
393 Rule GB-Eire 1945 only - Apr Mon>=2 1:00s 2:00 BDST
394 Rule GB-Eire 1945 only - Jul Sun>=9 1:00s 1:00 BST
395 # S.R.&O. 1945, No. 1208
396 Rule GB-Eire 1945 1946 - Oct Sun>=2 2:00s 0 GMT
397 Rule GB-Eire 1946 only - Apr Sun>=9 2:00s 1:00 BST
398 # The Summer Time Act, 1947
399 Rule GB-Eire 1947 only - Mar 16 2:00s 1:00 BST
400 Rule GB-Eire 1947 only - Apr 13 1:00s 2:00 BDST
401 Rule GB-Eire 1947 only - Aug 10 1:00s 1:00 BST
402 Rule GB-Eire 1947 only - Nov 2 2:00s 0 GMT
403 # Summer Time Order, 1948 (S.I. 1948/495)
404 Rule GB-Eire 1948 only - Mar 14 2:00s 1:00 BST
405 Rule GB-Eire 1948 only - Oct 31 2:00s 0 GMT
406 # Summer Time Order, 1949 (S.I. 1949/373)
407 Rule GB-Eire 1949 only - Apr 3 2:00s 1:00 BST
408 Rule GB-Eire 1949 only - Oct 30 2:00s 0 GMT
409 # Summer Time Order, 1950 (S.I. 1950/518)
410 # Summer Time Order, 1951 (S.I. 1951/430)
411 # Summer Time Order, 1952 (S.I. 1952/451)
412 Rule GB-Eire 1950 1952 - Apr Sun>=14 2:00s 1:00 BST
413 Rule GB-Eire 1950 1952 - Oct Sun>=21 2:00s 0 GMT
414 # revert to the rules of the Summer Time Act, 1925
415 Rule GB-Eire 1953 only - Apr Sun>=16 2:00s 1:00 BST
416 Rule GB-Eire 1953 1960 - Oct Sun>=2 2:00s 0 GMT
417 Rule GB-Eire 1954 only - Apr Sun>=9 2:00s 1:00 BST
418 Rule GB-Eire 1955 1956 - Apr Sun>=16 2:00s 1:00 BST
419 Rule GB-Eire 1957 only - Apr Sun>=9 2:00s 1:00 BST
420 Rule GB-Eire 1958 1959 - Apr Sun>=16 2:00s 1:00 BST
421 Rule GB-Eire 1960 only - Apr Sun>=9 2:00s 1:00 BST
422 # Summer Time Order, 1961 (S.I. 1961/71)
423 # Summer Time (1962) Order, 1961 (S.I. 1961/2465)
424 # Summer Time Order, 1963 (S.I. 1963/81)
425 Rule GB-Eire 1961 1963 - Mar lastSun 2:00s 1:00 BST
426 Rule GB-Eire 1961 1968 - Oct Sun>=23 2:00s 0 GMT
427 # Summer Time (1964) Order, 1963 (S.I. 1963/2101)
428 # Summer Time Order, 1964 (S.I. 1964/1201)
429 # Summer Time Order, 1967 (S.I. 1967/1148)
430 Rule GB-Eire 1964 1967 - Mar Sun>=19 2:00s 1:00 BST
431 # Summer Time Order, 1968 (S.I. 1968/117)
432 Rule GB-Eire 1968 only - Feb 18 2:00s 1:00 BST
433 # The British Standard Time Act, 1968
435 # The Summer Time Act, 1972
436 Rule GB-Eire 1972 1980 - Mar Sun>=16 2:00s 1:00 BST
437 Rule GB-Eire 1972 1980 - Oct Sun>=23 2:00s 0 GMT
438 # Summer Time Order, 1980 (S.I. 1980/1089)
439 # Summer Time Order, 1982 (S.I. 1982/1673)
440 # Summer Time Order, 1986 (S.I. 1986/223)
441 # Summer Time Order, 1988 (S.I. 1988/931)
442 Rule GB-Eire 1981 1995 - Mar lastSun 1:00u 1:00 BST
443 Rule GB-Eire 1981 1989 - Oct Sun>=23 1:00u 0 GMT
444 # Summer Time Order, 1989 (S.I. 1989/985)
445 # Summer Time Order, 1992 (S.I. 1992/1729)
446 # Summer Time Order 1994 (S.I. 1994/2798)
447 Rule GB-Eire 1990 1995 - Oct Sun>=22 1:00u 0 GMT
448 # Summer Time Order 1997 (S.I. 1997/2982)
449 # See EU for rules starting in 1996.
451 # Use Europe/London for Jersey, Guernsey, and the Isle of Man.
453 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
454 Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s
455 0:00 GB-Eire %s 1968 Oct 27
456 1:00 - BST 1971 Oct 31 2:00u
459 Link Europe/London Europe/Jersey
460 Link Europe/London Europe/Guernsey
461 Link Europe/London Europe/Isle_of_Man
463 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
464 Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
465 -0:25:21 - DMT 1916 May 21 2:00
466 -0:25:21 1:00 IST 1916 Oct 1 2:00s
467 0:00 GB-Eire %s 1921 Dec 6 # independence
468 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00
469 0:00 1:00 IST 1946 Oct 6 2:00
470 0:00 - GMT 1947 Mar 16 2:00
471 0:00 1:00 IST 1947 Nov 2 2:00
472 0:00 - GMT 1948 Apr 18 2:00
473 0:00 GB-Eire GMT/IST 1968 Oct 27
474 1:00 - IST 1971 Oct 31 2:00u
475 0:00 GB-Eire GMT/IST 1996
478 ###############################################################################
482 # EU rules are for the European Union, previously known as the EC, EEC,
483 # Common Market, etc.
485 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
486 Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
487 Rule EU 1977 only - Sep lastSun 1:00u 0 -
488 Rule EU 1978 only - Oct 1 1:00u 0 -
489 Rule EU 1979 1995 - Sep lastSun 1:00u 0 -
490 Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
491 Rule EU 1996 max - Oct lastSun 1:00u 0 -
492 # The most recent directive covers the years starting in 2002. See:
493 # Directive 2000/84/EC of the European Parliament and of the Council
494 # of 19 January 2001 on summer-time arrangements.
495 # http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32000L0084:EN:NOT
497 # W-Eur differs from EU only in that W-Eur uses standard time.
498 Rule W-Eur 1977 1980 - Apr Sun>=1 1:00s 1:00 S
499 Rule W-Eur 1977 only - Sep lastSun 1:00s 0 -
500 Rule W-Eur 1978 only - Oct 1 1:00s 0 -
501 Rule W-Eur 1979 1995 - Sep lastSun 1:00s 0 -
502 Rule W-Eur 1981 max - Mar lastSun 1:00s 1:00 S
503 Rule W-Eur 1996 max - Oct lastSun 1:00s 0 -
505 # Older C-Eur rules are for convenience in the tables.
506 # From 1977 on, C-Eur differs from EU only in that C-Eur uses standard time.
507 Rule C-Eur 1916 only - Apr 30 23:00 1:00 S
508 Rule C-Eur 1916 only - Oct 1 1:00 0 -
509 Rule C-Eur 1917 1918 - Apr Mon>=15 2:00s 1:00 S
510 Rule C-Eur 1917 1918 - Sep Mon>=15 2:00s 0 -
511 Rule C-Eur 1940 only - Apr 1 2:00s 1:00 S
512 Rule C-Eur 1942 only - Nov 2 2:00s 0 -
513 Rule C-Eur 1943 only - Mar 29 2:00s 1:00 S
514 Rule C-Eur 1943 only - Oct 4 2:00s 0 -
515 Rule C-Eur 1944 1945 - Apr Mon>=1 2:00s 1:00 S
516 # Whitman gives 1944 Oct 7; go with Shanks & Pottenger.
517 Rule C-Eur 1944 only - Oct 2 2:00s 0 -
518 # From Jesper Nørgaard Welen (2008-07-13):
520 # I found what is probably a typo of 2:00 which should perhaps be 2:00s
521 # in the C-Eur rule from tz database version 2008d (this part was
522 # corrected in version 2008d). The circumstantial evidence is simply the
523 # tz database itself, as seen below:
525 # Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
526 # 0:00 France WE%sT 1945 Sep 16 3:00
528 # Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
529 # 0:00 France WE%sT 1945 Sep 16 3:00
531 # Zone Europe/Belgrade 1:22:00 - LMT 1884
532 # 1:00 1:00 CEST 1945 Sep 16 2:00s
534 # Rule France 1945 only - Sep 16 3:00 0 -
535 # Rule Belgium 1945 only - Sep 16 2:00s 0 -
536 # Rule Neth 1945 only - Sep 16 2:00s 0 -
538 # The rule line to be changed is:
540 # Rule C-Eur 1945 only - Sep 16 2:00 0 -
542 # It seems that Paris, Monaco, Rule France, Rule Belgium all agree on
543 # 2:00 standard time, e.g. 3:00 local time. However there are no
544 # countries that use C-Eur rules in September 1945, so the only items
545 # affected are apparently these fictitious zones that translate acronyms
548 # Zone CET 1:00 C-Eur CE%sT
549 # Zone MET 1:00 C-Eur ME%sT
551 # It this is right then the corrected version would look like:
553 # Rule C-Eur 1945 only - Sep 16 2:00s 0 -
555 # A small step for mankind though 8-)
556 Rule C-Eur 1945 only - Sep 16 2:00s 0 -
557 Rule C-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 S
558 Rule C-Eur 1977 only - Sep lastSun 2:00s 0 -
559 Rule C-Eur 1978 only - Oct 1 2:00s 0 -
560 Rule C-Eur 1979 1995 - Sep lastSun 2:00s 0 -
561 Rule C-Eur 1981 max - Mar lastSun 2:00s 1:00 S
562 Rule C-Eur 1996 max - Oct lastSun 2:00s 0 -
564 # E-Eur differs from EU only in that E-Eur switches at midnight local time.
565 Rule E-Eur 1977 1980 - Apr Sun>=1 0:00 1:00 S
566 Rule E-Eur 1977 only - Sep lastSun 0:00 0 -
567 Rule E-Eur 1978 only - Oct 1 0:00 0 -
568 Rule E-Eur 1979 1995 - Sep lastSun 0:00 0 -
569 Rule E-Eur 1981 max - Mar lastSun 0:00 1:00 S
570 Rule E-Eur 1996 max - Oct lastSun 0:00 0 -
572 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
573 Rule Russia 1917 only - Jul 1 23:00 1:00 MST # Moscow Summer Time
574 Rule Russia 1917 only - Dec 28 0:00 0 MMT # Moscow Mean Time
575 Rule Russia 1918 only - May 31 22:00 2:00 MDST # Moscow Double Summer Time
576 Rule Russia 1918 only - Sep 16 1:00 1:00 MST
577 Rule Russia 1919 only - May 31 23:00 2:00 MDST
578 Rule Russia 1919 only - Jul 1 2:00 1:00 MSD
579 Rule Russia 1919 only - Aug 16 0:00 0 MSK
580 Rule Russia 1921 only - Feb 14 23:00 1:00 MSD
581 Rule Russia 1921 only - Mar 20 23:00 2:00 MSM # Midsummer
582 Rule Russia 1921 only - Sep 1 0:00 1:00 MSD
583 Rule Russia 1921 only - Oct 1 0:00 0 -
584 # Act No.925 of the Council of Ministers of the USSR (1980-10-24):
585 Rule Russia 1981 1984 - Apr 1 0:00 1:00 S
586 Rule Russia 1981 1983 - Oct 1 0:00 0 -
587 # Act No.967 of the Council of Ministers of the USSR (1984-09-13), repeated in
588 # Act No.227 of the Council of Ministers of the USSR (1989-03-14):
589 Rule Russia 1984 1991 - Sep lastSun 2:00s 0 -
590 Rule Russia 1985 1991 - Mar lastSun 2:00s 1:00 S
592 Rule Russia 1992 only - Mar lastSat 23:00 1:00 S
593 Rule Russia 1992 only - Sep lastSat 23:00 0 -
594 Rule Russia 1993 2010 - Mar lastSun 2:00s 1:00 S
595 Rule Russia 1993 1995 - Sep lastSun 2:00s 0 -
596 Rule Russia 1996 2010 - Oct lastSun 2:00s 0 -
598 # From Alexander Krivenyshev (2011-06-14):
599 # According to Kremlin press service, Russian President Dmitry Medvedev
600 # signed a federal law "On calculation of time" on June 9, 2011.
601 # According to the law Russia is abolishing daylight saving time.
603 # Medvedev signed a law "On the Calculation of Time" (in russian):
604 # http://bmockbe.ru/events/?ID=7583
606 # Medvedev signed a law on the calculation of the time (in russian):
607 # http://www.regnum.ru/news/polit/1413906.html
609 # From Arthur David Olson (2011-06-15):
610 # Take "abolishing daylight saving time" to mean that time is now considered
613 # These are for backward compatibility with older versions.
615 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
616 Zone WET 0:00 EU WE%sT
617 Zone CET 1:00 C-Eur CE%sT
618 Zone MET 1:00 C-Eur ME%sT
619 Zone EET 2:00 EU EE%sT
621 # Previous editions of this database used abbreviations like MET DST
622 # for Central European Summer Time, but this didn't agree with common usage.
624 # From Markus Kuhn (1996-07-12):
625 # The official German names ... are
627 # Mitteleuropäische Zeit (MEZ) = UTC+01:00
628 # Mitteleuropäische Sommerzeit (MESZ) = UTC+02:00
630 # as defined in the German Time Act (Gesetz über die Zeitbestimmung (ZeitG),
631 # 1978-07-25, Bundesgesetzblatt, Jahrgang 1978, Teil I, S. 1110-1111)....
632 # I wrote ... to the German Federal Physical-Technical Institution
634 # Physikalisch-Technische Bundesanstalt (PTB)
635 # Laboratorium 4.41 "Zeiteinheit"
637 # D-38023 Braunschweig
638 # phone: +49 531 592-0
640 # ... I received today an answer letter from Dr. Peter Hetzel, head of the PTB
641 # department for time and frequency transmission. He explained that the
642 # PTB translates MEZ and MESZ into English as
644 # Central European Time (CET) = UTC+01:00
645 # Central European Summer Time (CEST) = UTC+02:00
649 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
650 Rule Albania 1940 only - Jun 16 0:00 1:00 S
651 Rule Albania 1942 only - Nov 2 3:00 0 -
652 Rule Albania 1943 only - Mar 29 2:00 1:00 S
653 Rule Albania 1943 only - Apr 10 3:00 0 -
654 Rule Albania 1974 only - May 4 0:00 1:00 S
655 Rule Albania 1974 only - Oct 2 0:00 0 -
656 Rule Albania 1975 only - May 1 0:00 1:00 S
657 Rule Albania 1975 only - Oct 2 0:00 0 -
658 Rule Albania 1976 only - May 2 0:00 1:00 S
659 Rule Albania 1976 only - Oct 3 0:00 0 -
660 Rule Albania 1977 only - May 8 0:00 1:00 S
661 Rule Albania 1977 only - Oct 2 0:00 0 -
662 Rule Albania 1978 only - May 6 0:00 1:00 S
663 Rule Albania 1978 only - Oct 1 0:00 0 -
664 Rule Albania 1979 only - May 5 0:00 1:00 S
665 Rule Albania 1979 only - Sep 30 0:00 0 -
666 Rule Albania 1980 only - May 3 0:00 1:00 S
667 Rule Albania 1980 only - Oct 4 0:00 0 -
668 Rule Albania 1981 only - Apr 26 0:00 1:00 S
669 Rule Albania 1981 only - Sep 27 0:00 0 -
670 Rule Albania 1982 only - May 2 0:00 1:00 S
671 Rule Albania 1982 only - Oct 3 0:00 0 -
672 Rule Albania 1983 only - Apr 18 0:00 1:00 S
673 Rule Albania 1983 only - Oct 1 0:00 0 -
674 Rule Albania 1984 only - Apr 1 0:00 1:00 S
675 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
676 Zone Europe/Tirane 1:19:20 - LMT 1914
677 1:00 - CET 1940 Jun 16
678 1:00 Albania CE%sT 1984 Jul
682 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
683 Zone Europe/Andorra 0:06:04 - LMT 1901
684 0:00 - WET 1946 Sep 30
685 1:00 - CET 1985 Mar 31 2:00
690 # Milne says Vienna time was 1:05:21.
692 # From Paul Eggert (2006-03-22): Shanks & Pottenger give 1918-06-16 and
693 # 1945-11-18, but the Austrian Federal Office of Metrology and
694 # Surveying (BEV) gives 1918-09-16 and for Vienna gives the "alleged"
695 # date of 1945-04-12 with no time. For the 1980-04-06 transition
696 # Shanks & Pottenger give 02:00, the BEV 00:00. Go with the BEV,
697 # and guess 02:00 for 1945-04-12.
699 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
700 Rule Austria 1920 only - Apr 5 2:00s 1:00 S
701 Rule Austria 1920 only - Sep 13 2:00s 0 -
702 Rule Austria 1946 only - Apr 14 2:00s 1:00 S
703 Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 -
704 Rule Austria 1947 only - Apr 6 2:00s 1:00 S
705 Rule Austria 1948 only - Apr 18 2:00s 1:00 S
706 Rule Austria 1980 only - Apr 6 0:00 1:00 S
707 Rule Austria 1980 only - Sep 28 0:00 0 -
708 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
709 Zone Europe/Vienna 1:05:21 - LMT 1893 Apr
710 1:00 C-Eur CE%sT 1920
711 1:00 Austria CE%sT 1940 Apr 1 2:00s
712 1:00 C-Eur CE%sT 1945 Apr 2 2:00s
713 1:00 1:00 CEST 1945 Apr 12 2:00s
715 1:00 Austria CE%sT 1981
719 # From Yauhen Kharuzhy (2011-09-16):
720 # By latest Belarus government act Europe/Minsk timezone was changed to
721 # GMT+3 without DST (was GMT+2 with DST).
723 # Sources (Russian language):
724 # http://www.belta.by/ru/all_news/society/V-Belarusi-otmenjaetsja-perexod-na-sezonnoe-vremja_i_572952.html
725 # http://naviny.by/rubrics/society/2011/09/16/ic_articles_116_175144/
726 # http://news.tut.by/society/250578.html
727 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
728 Zone Europe/Minsk 1:50:16 - LMT 1880
729 1:50 - MMT 1924 May 2 # Minsk Mean Time
730 2:00 - EET 1930 Jun 21
731 3:00 - MSK 1941 Jun 28
732 1:00 C-Eur CE%sT 1944 Jul 3
733 3:00 Russia MSK/MSD 1990
734 3:00 - MSK 1991 Mar 31 2:00s
735 2:00 1:00 EEST 1991 Sep 29 2:00s
736 2:00 - EET 1992 Mar 29 0:00s
737 2:00 1:00 EEST 1992 Sep 27 0:00s
738 2:00 Russia EE%sT 2011 Mar 27 2:00s
743 # From Paul Eggert (1997-07-02):
744 # Entries from 1918 through 1991 are taken from:
745 # Annuaire de L'Observatoire Royal de Belgique,
746 # Avenue Circulaire, 3, B-1180 BRUXELLES, CLVIIe année, 1991
747 # (Imprimerie HAYEZ, s.p.r.l., Rue Fin, 4, 1080 BRUXELLES, MCMXC),
749 # LMT before 1892 was 0:17:30, according to the official journal of Belgium:
750 # Moniteur Belge, Samedi 30 Avril 1892, N.121.
751 # Thanks to Pascal Delmoitie for these references.
752 # The 1918 rules are listed for completeness; they apply to unoccupied Belgium.
753 # Assume Brussels switched to WET in 1918 when the armistice took effect.
755 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
756 Rule Belgium 1918 only - Mar 9 0:00s 1:00 S
757 Rule Belgium 1918 1919 - Oct Sat>=1 23:00s 0 -
758 Rule Belgium 1919 only - Mar 1 23:00s 1:00 S
759 Rule Belgium 1920 only - Feb 14 23:00s 1:00 S
760 Rule Belgium 1920 only - Oct 23 23:00s 0 -
761 Rule Belgium 1921 only - Mar 14 23:00s 1:00 S
762 Rule Belgium 1921 only - Oct 25 23:00s 0 -
763 Rule Belgium 1922 only - Mar 25 23:00s 1:00 S
764 Rule Belgium 1922 1927 - Oct Sat>=1 23:00s 0 -
765 Rule Belgium 1923 only - Apr 21 23:00s 1:00 S
766 Rule Belgium 1924 only - Mar 29 23:00s 1:00 S
767 Rule Belgium 1925 only - Apr 4 23:00s 1:00 S
768 # DSH writes that a royal decree of 1926-02-22 specified the Sun following 3rd
769 # Sat in Apr (except if it's Easter, in which case it's one Sunday earlier),
770 # to Sun following 1st Sat in Oct, and that a royal decree of 1928-09-15
771 # changed the transition times to 02:00 GMT.
772 Rule Belgium 1926 only - Apr 17 23:00s 1:00 S
773 Rule Belgium 1927 only - Apr 9 23:00s 1:00 S
774 Rule Belgium 1928 only - Apr 14 23:00s 1:00 S
775 Rule Belgium 1928 1938 - Oct Sun>=2 2:00s 0 -
776 Rule Belgium 1929 only - Apr 21 2:00s 1:00 S
777 Rule Belgium 1930 only - Apr 13 2:00s 1:00 S
778 Rule Belgium 1931 only - Apr 19 2:00s 1:00 S
779 Rule Belgium 1932 only - Apr 3 2:00s 1:00 S
780 Rule Belgium 1933 only - Mar 26 2:00s 1:00 S
781 Rule Belgium 1934 only - Apr 8 2:00s 1:00 S
782 Rule Belgium 1935 only - Mar 31 2:00s 1:00 S
783 Rule Belgium 1936 only - Apr 19 2:00s 1:00 S
784 Rule Belgium 1937 only - Apr 4 2:00s 1:00 S
785 Rule Belgium 1938 only - Mar 27 2:00s 1:00 S
786 Rule Belgium 1939 only - Apr 16 2:00s 1:00 S
787 Rule Belgium 1939 only - Nov 19 2:00s 0 -
788 Rule Belgium 1940 only - Feb 25 2:00s 1:00 S
789 Rule Belgium 1944 only - Sep 17 2:00s 0 -
790 Rule Belgium 1945 only - Apr 2 2:00s 1:00 S
791 Rule Belgium 1945 only - Sep 16 2:00s 0 -
792 Rule Belgium 1946 only - May 19 2:00s 1:00 S
793 Rule Belgium 1946 only - Oct 7 2:00s 0 -
794 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
795 Zone Europe/Brussels 0:17:30 - LMT 1880
796 0:17:30 - BMT 1892 May 1 12:00 # Brussels MT
797 0:00 - WET 1914 Nov 8
798 1:00 - CET 1916 May 1 0:00
799 1:00 C-Eur CE%sT 1918 Nov 11 11:00u
800 0:00 Belgium WE%sT 1940 May 20 2:00s
801 1:00 C-Eur CE%sT 1944 Sep 3
802 1:00 Belgium CE%sT 1977
805 # Bosnia and Herzegovina
806 # See Europe/Belgrade.
810 # From Plamen Simenov via Steffen Thorsen (1999-09-09):
811 # A document of Government of Bulgaria (No.94/1997) says:
812 # EET -> EETDST is in 03:00 Local time in last Sunday of March ...
813 # EETDST -> EET is in 04:00 Local time in last Sunday of October
815 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
816 Rule Bulg 1979 only - Mar 31 23:00 1:00 S
817 Rule Bulg 1979 only - Oct 1 1:00 0 -
818 Rule Bulg 1980 1982 - Apr Sat>=1 23:00 1:00 S
819 Rule Bulg 1980 only - Sep 29 1:00 0 -
820 Rule Bulg 1981 only - Sep 27 2:00 0 -
821 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
822 Zone Europe/Sofia 1:33:16 - LMT 1880
823 1:56:56 - IMT 1894 Nov 30 # Istanbul MT?
824 2:00 - EET 1942 Nov 2 3:00
825 1:00 C-Eur CE%sT 1945
826 1:00 - CET 1945 Apr 2 3:00
827 2:00 - EET 1979 Mar 31 23:00
828 2:00 Bulg EE%sT 1982 Sep 26 2:00
829 2:00 C-Eur EE%sT 1991
830 2:00 E-Eur EE%sT 1997
834 # See Europe/Belgrade.
837 # Please see the 'asia' file for Asia/Nicosia.
840 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
841 Rule Czech 1945 only - Apr 8 2:00s 1:00 S
842 Rule Czech 1945 only - Nov 18 2:00s 0 -
843 Rule Czech 1946 only - May 6 2:00s 1:00 S
844 Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
845 Rule Czech 1947 only - Apr 20 2:00s 1:00 S
846 Rule Czech 1948 only - Apr 18 2:00s 1:00 S
847 Rule Czech 1949 only - Apr 9 2:00s 1:00 S
848 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
849 Zone Europe/Prague 0:57:44 - LMT 1850
850 0:57:44 - PMT 1891 Oct # Prague Mean Time
851 1:00 C-Eur CE%sT 1944 Sep 17 2:00s
852 1:00 Czech CE%sT 1979
854 # Use Europe/Prague also for Slovakia.
856 # Denmark, Faroe Islands, and Greenland
858 # From Jesper Nørgaard Welen (2005-04-26):
859 # http://www.hum.aau.dk/~poe/tid/tine/DanskTid.htm says that the law
860 # [introducing standard time] was in effect from 1894-01-01....
861 # The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL
862 # confirms this, and states that the law was put forth 1893-03-29.
864 # The EU treaty with effect from 1973:
865 # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL
867 # This provoked a new law from 1974 to make possible summer time changes
868 # in subsequent decrees with the law
869 # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19740022330-REGL
871 # It seems however that no decree was set forward until 1980. I have
872 # not found any decree, but in another related law, the effecting DST
873 # changes are stated explicitly to be from 1980-04-06 at 02:00 to
874 # 1980-09-28 at 02:00. If this is true, this differs slightly from
875 # the EU rule in that DST runs to 02:00, not 03:00. We don't know
876 # when Denmark began using the EU rule correctly, but we have only
877 # confirmation of the 1980-time, so I presume it was correct in 1981:
878 # The law is about the management of the extra hour, concerning
879 # working hours reported and effect on obligatory-rest rules (which
880 # was suspended on that night):
881 # http://www.retsinfo.dk/_GETDOCI_/ACCN/C19801120554-REGL
883 # From Jesper Nørgaard Welen (2005-06-11):
884 # The Herning Folkeblad (1980-09-26) reported that the night between
885 # Saturday and Sunday the clock is set back from three to two.
887 # From Paul Eggert (2005-06-11):
888 # Hence the "02:00" of the 1980 law refers to standard time, not
889 # wall-clock time, and so the EU rules were in effect in 1980.
891 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
892 Rule Denmark 1916 only - May 14 23:00 1:00 S
893 Rule Denmark 1916 only - Sep 30 23:00 0 -
894 Rule Denmark 1940 only - May 15 0:00 1:00 S
895 Rule Denmark 1945 only - Apr 2 2:00s 1:00 S
896 Rule Denmark 1945 only - Aug 15 2:00s 0 -
897 Rule Denmark 1946 only - May 1 2:00s 1:00 S
898 Rule Denmark 1946 only - Sep 1 2:00s 0 -
899 Rule Denmark 1947 only - May 4 2:00s 1:00 S
900 Rule Denmark 1947 only - Aug 10 2:00s 0 -
901 Rule Denmark 1948 only - May 9 2:00s 1:00 S
902 Rule Denmark 1948 only - Aug 8 2:00s 0 -
904 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
905 Zone Europe/Copenhagen 0:50:20 - LMT 1890
906 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT
907 1:00 Denmark CE%sT 1942 Nov 2 2:00s
908 1:00 C-Eur CE%sT 1945 Apr 2 2:00
909 1:00 Denmark CE%sT 1980
911 Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn
915 # From Paul Eggert (2004-10-31):
916 # During World War II, Germany maintained secret manned weather stations in
917 # East Greenland and Franz Josef Land, but we don't know their time zones.
918 # My source for this is Wilhelm Dege's book mentioned under Svalbard.
920 # From Paul Eggert (2006-03-22):
921 # Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
922 # and left the EU on 1985-02-01. It therefore should have been using EU
923 # rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthåb
924 # used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU
925 # rules since at least 1991. Assume EU rules since 1980.
927 # From Gwillim Law (2001-06-06), citing
928 # <http://www.statkart.no/efs/efshefter/2001/efs5-2001.pdf> (2001-03-15),
929 # and with translations corrected by Steffen Thorsen:
931 # Greenland has four local times, and the relation to UTC
932 # is according to the following time line:
934 # The military zone near Thule UTC-4
935 # Standard Greenland time UTC-3
939 # In the military area near Thule and in Danmarkshavn DST will not be
942 # From Rives McDow (2001-11-01):
944 # I correspond regularly with the Dansk Polarcenter, and wrote them at
945 # the time to clarify the situation in Thule. Unfortunately, I have
946 # not heard back from them regarding my recent letter. [But I have
947 # info from earlier correspondence.]
949 # According to the center, a very small local time zone around Thule
950 # Air Base keeps the time according to UTC-4, implementing daylight
951 # savings using North America rules, changing the time at 02:00 local time....
953 # The east coast of Greenland north of the community of Scoresbysund
954 # uses UTC in the same way as in Iceland, year round, with no dst.
955 # There are just a few stations on this coast, including the
956 # Danmarkshavn ICAO weather station mentioned in your September 29th
957 # email. The other stations are two sledge patrol stations in
958 # Mestersvig and Daneborg, the air force base at Station Nord, and the
959 # DPC research station at Zackenberg.
961 # Scoresbysund and two small villages nearby keep time UTC-1 and use
962 # the same daylight savings time period as in West Greenland (Godthåb).
964 # The rest of Greenland, including Godthåb (this area, although it
965 # includes central Greenland, is known as west Greenland), keeps time
966 # UTC-3, with daylight savings methods according to European rules.
968 # It is common procedure to use UTC 0 in the wilderness of East and
969 # North Greenland, because it is mainly Icelandic aircraft operators
970 # maintaining traffic in these areas. However, the official status of
971 # this area is that it sticks with Godthåb time. This area might be
972 # considered a dual time zone in some respects because of this.
974 # From Rives McDow (2001-11-19):
975 # I heard back from someone stationed at Thule; the time change took place
978 # From Paul Eggert (2006-03-22):
979 # From 1997 on the CIA map shows Danmarkshavn on GMT;
980 # the 1995 map as like Godthåb.
981 # For lack of better info, assume they were like Godthåb before 1996.
982 # startkart.no says Thule does not observe DST, but this is clearly an error,
983 # so go with Shanks & Pottenger for Thule transitions until this year.
984 # For 2007 on assume Thule will stay in sync with US DST rules.
986 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
987 Rule Thule 1991 1992 - Mar lastSun 2:00 1:00 D
988 Rule Thule 1991 1992 - Sep lastSun 2:00 0 S
989 Rule Thule 1993 2006 - Apr Sun>=1 2:00 1:00 D
990 Rule Thule 1993 2006 - Oct lastSun 2:00 0 S
991 Rule Thule 2007 max - Mar Sun>=8 2:00 1:00 D
992 Rule Thule 2007 max - Nov Sun>=1 2:00 0 S
994 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
995 Zone America/Danmarkshavn -1:14:40 - LMT 1916 Jul 28
996 -3:00 - WGT 1980 Apr 6 2:00
999 Zone America/Scoresbysund -1:27:52 - LMT 1916 Jul 28 # Ittoqqortoormiit
1000 -2:00 - CGT 1980 Apr 6 2:00
1001 -2:00 C-Eur CG%sT 1981 Mar 29
1003 Zone America/Godthab -3:26:56 - LMT 1916 Jul 28 # Nuuk
1004 -3:00 - WGT 1980 Apr 6 2:00
1006 Zone America/Thule -4:35:08 - LMT 1916 Jul 28 # Pituffik air base
1010 # From Peter Ilieve (1994-10-15):
1011 # A relative in Tallinn confirms the accuracy of the data for 1989 onwards
1012 # [through 1994] and gives the legal authority for it,
1013 # a regulation of the Government of Estonia, No. 111 of 1989....
1015 # From Peter Ilieve (1996-10-28):
1016 # [IATA SSIM (1992/1996) claims that the Baltic republics switch at 01:00s,
1017 # but a relative confirms that Estonia still switches at 02:00s, writing:]
1018 # "I do not [know] exactly but there are some little different
1019 # (confusing) rules for International Air and Railway Transport Schedules
1020 # conversion in Sunday connected with end of summer time in Estonia....
1021 # A discussion is running about the summer time efficiency and effect on
1022 # human physiology. It seems that Estonia maybe will not change to
1023 # summer time next spring."
1025 # From Peter Ilieve (1998-11-04), heavily edited:
1026 # The 1998-09-22 Estonian time law
1027 # http://trip.rk.ee/cgi-bin/thw?${BASE}=akt&${OOHTML}=rtd&TA=1998&TO=1&AN=1390
1028 # refers to the Eighth Directive and cites the association agreement between
1029 # the EU and Estonia, ratified by the Estonian law (RT II 1995, 22-27, 120).
1031 # I also asked [my relative] whether they use any standard abbreviation
1032 # for their standard and summer times. He says no, they use "suveaeg"
1033 # (summer time) and "talveaeg" (winter time).
1035 # From The Baltic Times <http://www.baltictimes.com/> (1999-09-09)
1036 # via Steffen Thorsen:
1037 # This year will mark the last time Estonia shifts to summer time,
1038 # a council of the ruling coalition announced Sept. 6....
1039 # But what this could mean for Estonia's chances of joining the European
1040 # Union are still unclear. In 1994, the EU declared summer time compulsory
1041 # for all member states until 2001. Brussels has yet to decide what to do
1044 # From Mart Oruaas (2000-01-29):
1045 # Regulation no. 301 (1999-10-12) obsoletes previous regulation
1046 # no. 206 (1998-09-22) and thus sticks Estonia to +02:00 GMT for all
1047 # the year round. The regulation is effective 1999-11-01.
1049 # From Toomas Soome (2002-02-21):
1050 # The Estonian government has changed once again timezone politics.
1051 # Now we are using again EU rules.
1053 # From Urmet Jänes (2002-03-28):
1054 # The legislative reference is Government decree No. 84 on 2002-02-21.
1056 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1057 Zone Europe/Tallinn 1:39:00 - LMT 1880
1058 1:39:00 - TMT 1918 Feb # Tallinn Mean Time
1059 1:00 C-Eur CE%sT 1919 Jul
1060 1:39:00 - TMT 1921 May
1061 2:00 - EET 1940 Aug 6
1062 3:00 - MSK 1941 Sep 15
1063 1:00 C-Eur CE%sT 1944 Sep 22
1064 3:00 Russia MSK/MSD 1989 Mar 26 2:00s
1065 2:00 1:00 EEST 1989 Sep 24 2:00s
1066 2:00 C-Eur EE%sT 1998 Sep 22
1067 2:00 EU EE%sT 1999 Nov 1
1068 2:00 - EET 2002 Feb 21
1073 # From Hannu Strang (1994-09-25 06:03:37 UTC):
1074 # Well, here in Helsinki we're just changing from summer time to regular one,
1075 # and it's supposed to change at 4am...
1077 # From Janne Snabb (2010-07-15):
1079 # I noticed that the Finland data is not accurate for years 1981 and 1982.
1080 # During these two first trial years the DST adjustment was made one hour
1081 # earlier than in forthcoming years. Starting 1983 the adjustment was made
1082 # according to the central European standards.
1084 # This is documented in Heikki Oja: Aikakirja 2007, published by The Almanac
1085 # Office of University of Helsinki, ISBN 952-10-3221-9, available online (in
1087 # http://almanakka.helsinki.fi/aikakirja/Aikakirja2007kokonaan.pdf
1089 # Page 105 (56 in PDF version) has a handy table of all past daylight savings
1090 # transitions. It is easy enough to interpret without Finnish skills.
1092 # This is also confirmed by Finnish Broadcasting Company's archive at:
1093 # http://www.yle.fi/elavaarkisto/?s=s&g=1&ag=5&t=&a=3401
1095 # The news clip from 1981 says that "the time between 2 and 3 o'clock does not
1098 # From Konstantin Hyppönen (2014-06-13):
1099 # [Heikki Oja's book Aikakirja 2013]
1100 # http://almanakka.helsinki.fi/images/aikakirja/Aikakirja2013kokonaan.pdf
1101 # pages 104-105, including a scan from a newspaper published on Apr 2 1942
1102 # say that ... [o]n Apr 2 1942, 24 o'clock (which means Apr 3 1942,
1103 # 00:00), clocks were moved one hour forward. The newspaper
1104 # mentions "on the night from Thursday to Friday"....
1105 # On Oct 4 1942, clocks were moved at 1:00 one hour backwards.
1107 # From Paul Eggert (2014-06-14):
1108 # Go with Oja over Shanks.
1110 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1111 Rule Finland 1942 only - Apr 2 24:00 1:00 S
1112 Rule Finland 1942 only - Oct 4 1:00 0 -
1113 Rule Finland 1981 1982 - Mar lastSun 2:00 1:00 S
1114 Rule Finland 1981 1982 - Sep lastSun 3:00 0 -
1116 # Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document);
1119 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1120 Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31
1121 1:39:49 - HMT 1921 May # Helsinki Mean Time
1122 2:00 Finland EE%sT 1983
1126 Link Europe/Helsinki Europe/Mariehamn
1131 # From Ciro Discepolo (2000-12-20):
1133 # Henri Le Corre, Régimes horaires pour le monde entier, Éditions
1134 # Traditionnelles - Paris 2 books, 1993
1136 # Gabriel, Traité de l'heure dans le monde, Guy Trédaniel,
1139 # Françoise Gauquelin, Problèmes de l'heure résolus en astrologie,
1140 # Guy Trédaniel, Paris 1987
1144 # Shank & Pottenger seem to use '24:00' ambiguously; resolve it with Whitman.
1145 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1146 Rule France 1916 only - Jun 14 23:00s 1:00 S
1147 Rule France 1916 1919 - Oct Sun>=1 23:00s 0 -
1148 Rule France 1917 only - Mar 24 23:00s 1:00 S
1149 Rule France 1918 only - Mar 9 23:00s 1:00 S
1150 Rule France 1919 only - Mar 1 23:00s 1:00 S
1151 Rule France 1920 only - Feb 14 23:00s 1:00 S
1152 Rule France 1920 only - Oct 23 23:00s 0 -
1153 Rule France 1921 only - Mar 14 23:00s 1:00 S
1154 Rule France 1921 only - Oct 25 23:00s 0 -
1155 Rule France 1922 only - Mar 25 23:00s 1:00 S
1156 # DSH writes that a law of 1923-05-24 specified 3rd Sat in Apr at 23:00 to 1st
1157 # Sat in Oct at 24:00; and that in 1930, because of Easter, the transitions
1158 # were Apr 12 and Oct 5. Go with Shanks & Pottenger.
1159 Rule France 1922 1938 - Oct Sat>=1 23:00s 0 -
1160 Rule France 1923 only - May 26 23:00s 1:00 S
1161 Rule France 1924 only - Mar 29 23:00s 1:00 S
1162 Rule France 1925 only - Apr 4 23:00s 1:00 S
1163 Rule France 1926 only - Apr 17 23:00s 1:00 S
1164 Rule France 1927 only - Apr 9 23:00s 1:00 S
1165 Rule France 1928 only - Apr 14 23:00s 1:00 S
1166 Rule France 1929 only - Apr 20 23:00s 1:00 S
1167 Rule France 1930 only - Apr 12 23:00s 1:00 S
1168 Rule France 1931 only - Apr 18 23:00s 1:00 S
1169 Rule France 1932 only - Apr 2 23:00s 1:00 S
1170 Rule France 1933 only - Mar 25 23:00s 1:00 S
1171 Rule France 1934 only - Apr 7 23:00s 1:00 S
1172 Rule France 1935 only - Mar 30 23:00s 1:00 S
1173 Rule France 1936 only - Apr 18 23:00s 1:00 S
1174 Rule France 1937 only - Apr 3 23:00s 1:00 S
1175 Rule France 1938 only - Mar 26 23:00s 1:00 S
1176 Rule France 1939 only - Apr 15 23:00s 1:00 S
1177 Rule France 1939 only - Nov 18 23:00s 0 -
1178 Rule France 1940 only - Feb 25 2:00 1:00 S
1179 # The French rules for 1941-1944 were not used in Paris, but Shanks & Pottenger
1180 # write that they were used in Monaco and in many French locations.
1181 # Le Corre writes that the upper limit of the free zone was Arnéguy, Orthez,
1182 # Mont-de-Marsan, Bazas, Langon, Lamothe-Montravel, Marœuil, La
1183 # Rochefoucauld, Champagne-Mouton, La Roche-Posay, La Haye-Descartes,
1184 # Loches, Montrichard, Vierzon, Bourges, Moulins, Digoin,
1185 # Paray-le-Monial, Montceau-les-Mines, Chalon-sur-Saône, Arbois,
1186 # Dole, Morez, St-Claude, and Collonges (Haute-Savoie).
1187 Rule France 1941 only - May 5 0:00 2:00 M # Midsummer
1188 # Shanks & Pottenger say this transition occurred at Oct 6 1:00,
1189 # but go with Denis Excoffier (1997-12-12),
1190 # who quotes the Ephémérides astronomiques for 1998 from Bureau des Longitudes
1191 # as saying 5/10/41 22hUT.
1192 Rule France 1941 only - Oct 6 0:00 1:00 S
1193 Rule France 1942 only - Mar 9 0:00 2:00 M
1194 Rule France 1942 only - Nov 2 3:00 1:00 S
1195 Rule France 1943 only - Mar 29 2:00 2:00 M
1196 Rule France 1943 only - Oct 4 3:00 1:00 S
1197 Rule France 1944 only - Apr 3 2:00 2:00 M
1198 Rule France 1944 only - Oct 8 1:00 1:00 S
1199 Rule France 1945 only - Apr 2 2:00 2:00 M
1200 Rule France 1945 only - Sep 16 3:00 0 -
1201 # Shanks & Pottenger give Mar 28 2:00 and Sep 26 3:00;
1202 # go with Excoffier's 28/3/76 0hUT and 25/9/76 23hUT.
1203 Rule France 1976 only - Mar 28 1:00 1:00 S
1204 Rule France 1976 only - Sep 26 1:00 0 -
1205 # Shanks & Pottenger give 0:09:20 for Paris Mean Time, and Whitman 0:09:05,
1206 # but Howse quotes the actual French legislation as saying 0:09:21.
1207 # Go with Howse. Howse writes that the time in France was officially based
1208 # on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
1209 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1210 Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
1211 0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT
1212 # Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre.
1213 0:00 France WE%sT 1940 Jun 14 23:00
1214 # Le Corre says Paris stuck with occupied-France time after the liberation;
1215 # go with Shanks & Pottenger.
1216 1:00 C-Eur CE%sT 1944 Aug 25
1217 0:00 France WE%sT 1945 Sep 16 3:00
1218 1:00 France CE%sT 1977
1223 # From Markus Kuhn (1998-09-29):
1224 # The German time zone web site by the Physikalisch-Technische
1225 # Bundesanstalt contains DST information back to 1916.
1226 # [See tz-link.htm for the URL.]
1228 # From Jörg Schilling (2002-10-23):
1229 # In 1945, Berlin was switched to Moscow Summer time (GMT+4) by
1230 # http://www.dhm.de/lemo/html/biografien/BersarinNikolai/
1231 # General [Nikolai] Bersarin.
1233 # From Paul Eggert (2003-03-08):
1234 # http://www.parlament-berlin.de/pds-fraktion.nsf/727459127c8b66ee8525662300459099/defc77cb784f180ac1256c2b0030274b/$FILE/bersarint.pdf
1235 # says that Bersarin issued an order to use Moscow time on May 20.
1236 # However, Moscow did not observe daylight saving in 1945, so
1237 # this was equivalent to CEMT (GMT+3), not GMT+4.
1240 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1241 Rule Germany 1946 only - Apr 14 2:00s 1:00 S
1242 Rule Germany 1946 only - Oct 7 2:00s 0 -
1243 Rule Germany 1947 1949 - Oct Sun>=1 2:00s 0 -
1244 # http://www.ptb.de/de/org/4/44/441/salt.htm says the following transition
1245 # occurred at 3:00 MEZ, not the 2:00 MEZ given in Shanks & Pottenger.
1247 Rule Germany 1947 only - Apr 6 3:00s 1:00 S
1248 Rule Germany 1947 only - May 11 2:00s 2:00 M
1249 Rule Germany 1947 only - Jun 29 3:00 1:00 S
1250 Rule Germany 1948 only - Apr 18 2:00s 1:00 S
1251 Rule Germany 1949 only - Apr 10 2:00s 1:00 S
1253 Rule SovietZone 1945 only - May 24 2:00 2:00 M # Midsummer
1254 Rule SovietZone 1945 only - Sep 24 3:00 1:00 S
1255 Rule SovietZone 1945 only - Nov 18 2:00s 0 -
1257 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1258 Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
1259 1:00 C-Eur CE%sT 1945 May 24 2:00
1260 1:00 SovietZone CE%sT 1946
1261 1:00 Germany CE%sT 1980
1264 # From Tobias Conradi (2011-09-12):
1265 # Büsingen <http://www.buesingen.de>, surrounded by the Swiss canton
1266 # Schaffhausen, did not start observing DST in 1980 as the rest of DE
1267 # (West Germany at that time) and DD (East Germany at that time) did.
1268 # DD merged into DE, the area is currently covered by code DE in ISO 3166-1,
1269 # which in turn is covered by the zone Europe/Berlin.
1271 # Source for the time in Büsingen 1980:
1272 # http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3
1274 # From Arthur David Olson (2012-03-03):
1275 # Büsingen and Zurich have shared clocks since 1970.
1277 Link Europe/Zurich Europe/Busingen
1280 # Please see the "asia" file for Asia/Tbilisi.
1281 # Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni)
1282 # is in Europe. Our reference location Tbilisi is in the Asian part.
1285 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1286 Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s
1287 0:00 GB-Eire %s 1957 Apr 14 2:00
1292 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1293 # Whitman gives 1932 Jul 5 - Nov 1; go with Shanks & Pottenger.
1294 Rule Greece 1932 only - Jul 7 0:00 1:00 S
1295 Rule Greece 1932 only - Sep 1 0:00 0 -
1296 # Whitman gives 1941 Apr 25 - ?; go with Shanks & Pottenger.
1297 Rule Greece 1941 only - Apr 7 0:00 1:00 S
1298 # Whitman gives 1942 Feb 2 - ?; go with Shanks & Pottenger.
1299 Rule Greece 1942 only - Nov 2 3:00 0 -
1300 Rule Greece 1943 only - Mar 30 0:00 1:00 S
1301 Rule Greece 1943 only - Oct 4 0:00 0 -
1302 # Whitman gives 1944 Oct 3 - Oct 31; go with Shanks & Pottenger.
1303 Rule Greece 1952 only - Jul 1 0:00 1:00 S
1304 Rule Greece 1952 only - Nov 2 0:00 0 -
1305 Rule Greece 1975 only - Apr 12 0:00s 1:00 S
1306 Rule Greece 1975 only - Nov 26 0:00s 0 -
1307 Rule Greece 1976 only - Apr 11 2:00s 1:00 S
1308 Rule Greece 1976 only - Oct 10 2:00s 0 -
1309 Rule Greece 1977 1978 - Apr Sun>=1 2:00s 1:00 S
1310 Rule Greece 1977 only - Sep 26 2:00s 0 -
1311 Rule Greece 1978 only - Sep 24 4:00 0 -
1312 Rule Greece 1979 only - Apr 1 9:00 1:00 S
1313 Rule Greece 1979 only - Sep 29 2:00 0 -
1314 Rule Greece 1980 only - Apr 1 0:00 1:00 S
1315 Rule Greece 1980 only - Sep 28 0:00 0 -
1316 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1317 Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
1318 1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT
1319 2:00 Greece EE%sT 1941 Apr 30
1320 1:00 Greece CE%sT 1944 Apr 4
1321 2:00 Greece EE%sT 1981
1322 # Shanks & Pottenger say it switched to C-Eur in 1981;
1323 # go with EU instead, since Greece joined it on Jan 1.
1327 # From Paul Eggert (2014-07-15):
1328 # Dates for 1916-1945 are taken from:
1329 # Oross A. Jelen a múlt jövője: a nyári időszámítás Magyarországon 1916-1945.
1330 # National Archives of Hungary (2012-10-29).
1331 # http://mnl.gov.hu/a_het_dokumentuma/a_nyari_idoszamitas_magyarorszagon_19161945.html
1332 # This source does not always give times, which are taken from Shanks
1333 # & Pottenger (which disagree about the dates).
1334 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1335 Rule Hungary 1918 only - Apr 1 3:00 1:00 S
1336 Rule Hungary 1918 only - Sep 16 3:00 0 -
1337 Rule Hungary 1919 only - Apr 15 3:00 1:00 S
1338 Rule Hungary 1919 only - Nov 24 3:00 0 -
1339 Rule Hungary 1945 only - May 1 23:00 1:00 S
1340 Rule Hungary 1945 only - Nov 1 0:00 0 -
1341 Rule Hungary 1946 only - Mar 31 2:00s 1:00 S
1342 Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 -
1343 Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 S
1344 Rule Hungary 1950 only - Apr 17 2:00s 1:00 S
1345 Rule Hungary 1950 only - Oct 23 2:00s 0 -
1346 Rule Hungary 1954 1955 - May 23 0:00 1:00 S
1347 Rule Hungary 1954 1955 - Oct 3 0:00 0 -
1348 Rule Hungary 1956 only - Jun Sun>=1 0:00 1:00 S
1349 Rule Hungary 1956 only - Sep lastSun 0:00 0 -
1350 Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 S
1351 Rule Hungary 1957 only - Sep lastSun 3:00 0 -
1352 Rule Hungary 1980 only - Apr 6 1:00 1:00 S
1353 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1354 Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1355 1:00 C-Eur CE%sT 1918
1356 1:00 Hungary CE%sT 1941 Apr 8
1357 1:00 C-Eur CE%sT 1945
1358 1:00 Hungary CE%sT 1980 Sep 28 2:00s
1363 # From Adam David (1993-11-06):
1364 # The name of the timezone in Iceland for system / mail / news purposes is GMT.
1367 # This material is paraphrased from the 1988 edition of the University of
1370 # From January 1st, 1908 the whole of Iceland was standardised at 1 hour
1371 # behind GMT. Previously, local mean solar time was used in different parts
1372 # of Iceland, the almanak had been based on Reykjavik mean solar time which
1373 # was 1 hour and 28 minutes behind GMT.
1375 # "first day of winter" referred to [below] means the first day of the 26 weeks
1376 # of winter, according to the old icelandic calendar that dates back to the
1377 # time the norsemen first settled Iceland. The first day of winter is always
1378 # Saturday, but is not dependent on the Julian or Gregorian calendars.
1381 # I have a reference from the Oxford Icelandic-English dictionary for the
1382 # beginning of winter, which ties it to the ecclesiastical calendar (and thus
1383 # to the julian/gregorian calendar) over the period in question.
1384 # the winter begins on the Saturday next before St. Luke's day
1385 # (old style), or on St. Luke's day, if a Saturday.
1386 # St. Luke's day ought to be traceable from ecclesiastical sources. "old style"
1387 # might be a reference to the Julian calendar as opposed to Gregorian, or it
1388 # might mean something else (???).
1390 # From Paul Eggert (2006-03-22):
1391 # The Iceland Almanak, Shanks & Pottenger, and Whitman disagree on many points.
1392 # We go with the Almanak, except for one claim from Shanks & Pottenger, namely
1393 # that Reykavik was 21W57 from 1837 to 1908, local mean time before that.
1395 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1396 Rule Iceland 1917 1918 - Feb 19 23:00 1:00 S
1397 Rule Iceland 1917 only - Oct 21 1:00 0 -
1398 Rule Iceland 1918 only - Nov 16 1:00 0 -
1399 Rule Iceland 1939 only - Apr 29 23:00 1:00 S
1400 Rule Iceland 1939 only - Nov 29 2:00 0 -
1401 Rule Iceland 1940 only - Feb 25 2:00 1:00 S
1402 Rule Iceland 1940 only - Nov 3 2:00 0 -
1403 Rule Iceland 1941 only - Mar 2 1:00s 1:00 S
1404 Rule Iceland 1941 only - Nov 2 1:00s 0 -
1405 Rule Iceland 1942 only - Mar 8 1:00s 1:00 S
1406 Rule Iceland 1942 only - Oct 25 1:00s 0 -
1407 # 1943-1946 - first Sunday in March until first Sunday in winter
1408 Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 S
1409 Rule Iceland 1943 1948 - Oct Sun>=22 1:00s 0 -
1410 # 1947-1967 - first Sunday in April until first Sunday in winter
1411 Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 S
1412 # 1949 Oct transition delayed by 1 week
1413 Rule Iceland 1949 only - Oct 30 1:00s 0 -
1414 Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 -
1415 Rule Iceland 1967 only - Oct 29 1:00s 0 -
1416 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1417 Zone Atlantic/Reykjavik -1:27:24 - LMT 1837
1418 -1:27:48 - RMT 1908 # Reykjavik Mean Time?
1419 -1:00 Iceland IS%sT 1968 Apr 7 1:00s
1424 # From Paul Eggert (2001-03-06):
1425 # Sicily and Sardinia each had their own time zones from 1866 to 1893,
1426 # called Palermo Time (+00:53:28) and Cagliari Time (+00:36:32).
1427 # During World War II, German-controlled Italy used German time.
1428 # But these events all occurred before the 1970 cutoff,
1429 # so record only the time in Rome.
1431 # From Paul Eggert (2006-03-22):
1432 # For Italian DST we have three sources: Shanks & Pottenger, Whitman, and
1434 # Day-light Saving Time in Italy (2006-02-03)
1435 # http://toi.iriti.cnr.it/uk/ienitlt.html
1436 # ('FP' below), taken from an Italian National Electrotechnical Institute
1437 # publication. When the three sources disagree, guess who's right, as follows:
1439 # year FP Shanks&P. (S) Whitman (W) Go with:
1440 # 1916 06-03 06-03 24:00 06-03 00:00 FP & W
1441 # 09-30 09-30 24:00 09-30 01:00 FP; guess 24:00s
1442 # 1917 04-01 03-31 24:00 03-31 00:00 FP & S
1443 # 09-30 09-29 24:00 09-30 01:00 FP & W
1444 # 1918 03-09 03-09 24:00 03-09 00:00 FP & S
1445 # 10-06 10-05 24:00 10-06 01:00 FP & W
1446 # 1919 03-01 03-01 24:00 03-01 00:00 FP & S
1447 # 10-04 10-04 24:00 10-04 01:00 FP; guess 24:00s
1448 # 1920 03-20 03-20 24:00 03-20 00:00 FP & S
1449 # 09-18 09-18 24:00 10-01 01:00 FP; guess 24:00s
1450 # 1944 04-02 04-03 02:00 S (see C-Eur)
1451 # 09-16 10-02 03:00 FP; guess 24:00s
1452 # 1945 09-14 09-16 24:00 FP; guess 24:00s
1453 # 1970 05-21 05-31 00:00 S
1454 # 09-20 09-27 00:00 S
1456 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1457 Rule Italy 1916 only - Jun 3 0:00s 1:00 S
1458 Rule Italy 1916 only - Oct 1 0:00s 0 -
1459 Rule Italy 1917 only - Apr 1 0:00s 1:00 S
1460 Rule Italy 1917 only - Sep 30 0:00s 0 -
1461 Rule Italy 1918 only - Mar 10 0:00s 1:00 S
1462 Rule Italy 1918 1919 - Oct Sun>=1 0:00s 0 -
1463 Rule Italy 1919 only - Mar 2 0:00s 1:00 S
1464 Rule Italy 1920 only - Mar 21 0:00s 1:00 S
1465 Rule Italy 1920 only - Sep 19 0:00s 0 -
1466 Rule Italy 1940 only - Jun 15 0:00s 1:00 S
1467 Rule Italy 1944 only - Sep 17 0:00s 0 -
1468 Rule Italy 1945 only - Apr 2 2:00 1:00 S
1469 Rule Italy 1945 only - Sep 15 0:00s 0 -
1470 Rule Italy 1946 only - Mar 17 2:00s 1:00 S
1471 Rule Italy 1946 only - Oct 6 2:00s 0 -
1472 Rule Italy 1947 only - Mar 16 0:00s 1:00 S
1473 Rule Italy 1947 only - Oct 5 0:00s 0 -
1474 Rule Italy 1948 only - Feb 29 2:00s 1:00 S
1475 Rule Italy 1948 only - Oct 3 2:00s 0 -
1476 Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 S
1477 Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 -
1478 Rule Italy 1969 only - Jun 1 0:00 1:00 S
1479 Rule Italy 1970 only - May 31 0:00 1:00 S
1480 Rule Italy 1970 only - Sep lastSun 0:00 0 -
1481 Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 S
1482 Rule Italy 1971 only - Sep lastSun 1:00 0 -
1483 Rule Italy 1972 only - Oct 1 0:00 0 -
1484 Rule Italy 1973 only - Jun 3 0:00 1:00 S
1485 Rule Italy 1973 1974 - Sep lastSun 0:00 0 -
1486 Rule Italy 1974 only - May 26 0:00 1:00 S
1487 Rule Italy 1975 only - Jun 1 0:00s 1:00 S
1488 Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
1489 Rule Italy 1976 only - May 30 0:00s 1:00 S
1490 Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 S
1491 Rule Italy 1978 only - Oct 1 0:00s 0 -
1492 Rule Italy 1979 only - Sep 30 0:00s 0 -
1493 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1494 Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22
1495 0:49:56 - RMT 1893 Nov 1 0:00s # Rome Mean
1496 1:00 Italy CE%sT 1942 Nov 2 2:00s
1497 1:00 C-Eur CE%sT 1944 Jul
1498 1:00 Italy CE%sT 1980
1501 Link Europe/Rome Europe/Vatican
1502 Link Europe/Rome Europe/San_Marino
1506 # From Liene Kanepe (1998-09-17):
1508 # I asked about this matter Scientific Secretary of the Institute of Astronomy
1509 # of The University of Latvia Dr. paed Mr. Ilgonis Vilks. I also searched the
1510 # correct data in juridical acts and I found some juridical documents about
1511 # changes in the counting of time in Latvia from 1981....
1513 # Act No.35 of the Council of Ministers of Latvian SSR of 1981-01-22 ...
1514 # according to the Act No.925 of the Council of Ministers of USSR of 1980-10-24
1515 # ...: all year round the time of 2nd time zone + 1 hour, in addition turning
1516 # the hands of the clock 1 hour forward on 1 April at 00:00 (GMT 31 March 21:00)
1517 # and 1 hour backward on the 1 October at 00:00 (GMT 30 September 20:00).
1519 # Act No.592 of the Council of Ministers of Latvian SSR of 1984-09-24 ...
1520 # according to the Act No.967 of the Council of Ministers of USSR of 1984-09-13
1521 # ...: all year round the time of 2nd time zone + 1 hour, in addition turning
1522 # the hands of the clock 1 hour forward on the last Sunday of March at 02:00
1523 # (GMT 23:00 on the previous day) and 1 hour backward on the last Sunday of
1524 # September at 03:00 (GMT 23:00 on the previous day).
1526 # Act No.81 of the Council of Ministers of Latvian SSR of 1989-03-22 ...
1527 # according to the Act No.227 of the Council of Ministers of USSR of 1989-03-14
1528 # ...: since the last Sunday of March 1989 in Lithuanian SSR, Latvian SSR,
1529 # Estonian SSR and Kaliningrad region of Russian Federation all year round the
1530 # time of 2nd time zone (Moscow time minus one hour). On the territory of Latvia
1531 # transition to summer time is performed on the last Sunday of March at 02:00
1532 # (GMT 00:00), turning the hands of the clock 1 hour forward. The end of
1533 # daylight saving time is performed on the last Sunday of September at 03:00
1534 # (GMT 00:00), turning the hands of the clock 1 hour backward. Exception is
1535 # 1989-03-26, when we must not turn the hands of the clock....
1537 # The Regulations of the Cabinet of Ministers of the Republic of Latvia of
1538 # 1997-01-21 on transition to Summer time ... established the same order of
1539 # daylight savings time settings as in the States of the European Union.
1541 # From Andrei Ivanov (2000-03-06):
1542 # This year Latvia will not switch to Daylight Savings Time (as specified in
1543 # The Regulations of the Cabinet of Ministers of the Rep. of Latvia of
1544 # 29-Feb-2000 (#79) <http://www.lv-laiks.lv/wwwraksti/2000/071072/vd4.htm>,
1545 # in Latvian for subscribers only).
1547 # From RFE/RL Newsline
1548 # http://www.rferl.org/newsline/2001/01/3-CEE/cee-030101.html
1549 # (2001-01-03), noted after a heads-up by Rives McDow:
1550 # The Latvian government on 2 January decided that the country will
1551 # institute daylight-saving time this spring, LETA reported.
1552 # Last February the three Baltic states decided not to turn back their
1553 # clocks one hour in the spring....
1554 # Minister of Economy Aigars Kalvītis noted that Latvia had too few
1555 # daylight hours and thus decided to comply with a draft European
1556 # Commission directive that provides for instituting daylight-saving
1557 # time in EU countries between 2002 and 2006. The Latvian government
1558 # urged Lithuania and Estonia to adopt a similar time policy, but it
1559 # appears that they will not do so....
1561 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1562 Rule Latvia 1989 1996 - Mar lastSun 2:00s 1:00 S
1563 Rule Latvia 1989 1996 - Sep lastSun 2:00s 0 -
1565 # Milne 1899 says Riga was 1:36:28 (Polytechnique House time).
1566 # Byalokoz 1919 says Latvia was 1:36:34.
1569 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1570 Zone Europe/Riga 1:36:34 - LMT 1880
1571 1:36:34 - RMT 1918 Apr 15 2:00 # Riga MT
1572 1:36:34 1:00 LST 1918 Sep 16 3:00 # Latvian ST
1573 1:36:34 - RMT 1919 Apr 1 2:00
1574 1:36:34 1:00 LST 1919 May 22 3:00
1575 1:36:34 - RMT 1926 May 11
1576 2:00 - EET 1940 Aug 5
1578 1:00 C-Eur CE%sT 1944 Oct 13
1579 3:00 Russia MSK/MSD 1989 Mar lastSun 2:00s
1580 2:00 1:00 EEST 1989 Sep lastSun 2:00s
1581 2:00 Latvia EE%sT 1997 Jan 21
1582 2:00 EU EE%sT 2000 Feb 29
1583 2:00 - EET 2001 Jan 2
1588 # From Paul Eggert (2013-09-09):
1589 # Shanks & Pottenger say Vaduz is like Zurich.
1591 # From Alois Treindl (2013-09-18):
1592 # http://www.eliechtensteinensia.li/LIJ/1978/1938-1978/1941.pdf
1593 # ... confirms on p. 6 that Liechtenstein followed Switzerland in 1941 and 1942.
1594 # I ... translate only the last two paragraphs:
1595 # ... during second world war, in the years 1941 and 1942, Liechtenstein
1596 # introduced daylight saving time, adapting to Switzerland. From 1943 on
1597 # central European time was in force throughout the year.
1598 # From a report of the duke's government to the high council,
1599 # regarding the introduction of a time law, of 31 May 1977.
1601 Link Europe/Zurich Europe/Vaduz
1606 # From Paul Eggert (1996-11-22):
1607 # IATA SSIM (1992/1996) says Lithuania uses W-Eur rules, but since it is
1608 # known to be wrong about Estonia and Latvia, assume it's wrong here too.
1610 # From Marius Gedminas (1998-08-07):
1611 # I would like to inform that in this year Lithuanian time zone
1612 # (Europe/Vilnius) was changed.
1614 # From ELTA No. 972 (2582) (1999-09-29) <http://www.elta.lt/>,
1615 # via Steffen Thorsen:
1616 # Lithuania has shifted back to the second time zone (GMT plus two hours)
1617 # to be valid here starting from October 31,
1618 # as decided by the national government on Wednesday....
1619 # The Lithuanian government also announced plans to consider a
1620 # motion to give up shifting to summer time in spring, as it was
1621 # already done by Estonia.
1623 # From the Fact File, Lithuanian State Department of Tourism
1624 # <http://www.tourism.lt/informa/ff.htm> (2000-03-27):
1625 # Local time is GMT+2 hours ..., no daylight saving.
1627 # From a user via Klaus Marten (2003-02-07):
1628 # As a candidate for membership of the European Union, Lithuania will
1629 # observe Summer Time in 2003, changing its clocks at the times laid
1630 # down in EU Directive 2000/84 of 19.I.01 (i.e. at the same times as its
1631 # neighbour Latvia). The text of the Lithuanian government Order of
1632 # 7.XI.02 to this effect can be found at
1633 # http://www.lrvk.lt/nut/11/n1749.htm
1636 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1637 Zone Europe/Vilnius 1:41:16 - LMT 1880
1638 1:24:00 - WMT 1917 # Warsaw Mean Time
1639 1:35:36 - KMT 1919 Oct 10 # Kaunas Mean Time
1640 1:00 - CET 1920 Jul 12
1641 2:00 - EET 1920 Oct 9
1642 1:00 - CET 1940 Aug 3
1643 3:00 - MSK 1941 Jun 24
1644 1:00 C-Eur CE%sT 1944 Aug
1645 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
1646 2:00 1:00 EEST 1991 Sep 29 2:00s
1647 2:00 C-Eur EE%sT 1998
1648 2:00 - EET 1998 Mar 29 1:00u
1649 1:00 EU CE%sT 1999 Oct 31 1:00u
1650 2:00 - EET 2003 Jan 1
1654 # Whitman disagrees with most of these dates in minor ways;
1655 # go with Shanks & Pottenger.
1656 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1657 Rule Lux 1916 only - May 14 23:00 1:00 S
1658 Rule Lux 1916 only - Oct 1 1:00 0 -
1659 Rule Lux 1917 only - Apr 28 23:00 1:00 S
1660 Rule Lux 1917 only - Sep 17 1:00 0 -
1661 Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S
1662 Rule Lux 1918 only - Sep Mon>=15 2:00s 0 -
1663 Rule Lux 1919 only - Mar 1 23:00 1:00 S
1664 Rule Lux 1919 only - Oct 5 3:00 0 -
1665 Rule Lux 1920 only - Feb 14 23:00 1:00 S
1666 Rule Lux 1920 only - Oct 24 2:00 0 -
1667 Rule Lux 1921 only - Mar 14 23:00 1:00 S
1668 Rule Lux 1921 only - Oct 26 2:00 0 -
1669 Rule Lux 1922 only - Mar 25 23:00 1:00 S
1670 Rule Lux 1922 only - Oct Sun>=2 1:00 0 -
1671 Rule Lux 1923 only - Apr 21 23:00 1:00 S
1672 Rule Lux 1923 only - Oct Sun>=2 2:00 0 -
1673 Rule Lux 1924 only - Mar 29 23:00 1:00 S
1674 Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 -
1675 Rule Lux 1925 only - Apr 5 23:00 1:00 S
1676 Rule Lux 1926 only - Apr 17 23:00 1:00 S
1677 Rule Lux 1927 only - Apr 9 23:00 1:00 S
1678 Rule Lux 1928 only - Apr 14 23:00 1:00 S
1679 Rule Lux 1929 only - Apr 20 23:00 1:00 S
1680 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1681 Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
1682 1:00 Lux CE%sT 1918 Nov 25
1683 0:00 Lux WE%sT 1929 Oct 6 2:00s
1684 0:00 Belgium WE%sT 1940 May 14 3:00
1685 1:00 C-Eur WE%sT 1944 Sep 18 3:00
1686 1:00 Belgium CE%sT 1977
1690 # See Europe/Belgrade.
1693 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1694 Rule Malta 1973 only - Mar 31 0:00s 1:00 S
1695 Rule Malta 1973 only - Sep 29 0:00s 0 -
1696 Rule Malta 1974 only - Apr 21 0:00s 1:00 S
1697 Rule Malta 1974 only - Sep 16 0:00s 0 -
1698 Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 S
1699 Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
1700 Rule Malta 1980 only - Mar 31 2:00 1:00 S
1701 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1702 Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta
1703 1:00 Italy CE%sT 1942 Nov 2 2:00s
1704 1:00 C-Eur CE%sT 1945 Apr 2 2:00s
1705 1:00 Italy CE%sT 1973 Mar 31
1706 1:00 Malta CE%sT 1981
1711 # From Paul Eggert (2006-03-22):
1712 # A previous version of this database followed Shanks & Pottenger, who write
1713 # that Tiraspol switched to Moscow time on 1992-01-19 at 02:00.
1714 # However, this is most likely an error, as Moldova declared independence
1715 # on 1991-08-27 (the 1992-01-19 date is that of a Russian decree).
1716 # In early 1992 there was large-scale interethnic violence in the area
1717 # and it's possible that some Russophones continued to observe Moscow time.
1718 # But [two people] separately reported via
1719 # Jesper Nørgaard that as of 2001-01-24 Tiraspol was like Chisinau.
1720 # The Tiraspol entry has therefore been removed for now.
1722 # From Alexander Krivenyshev (2011-10-17):
1723 # Pridnestrovian Moldavian Republic (PMR, also known as
1724 # "Pridnestrovie") has abolished seasonal clock change (no transition
1725 # to the Winter Time).
1727 # News (in Russian):
1728 # http://www.kyivpost.ua/russia/news/pridnestrove-otkazalos-ot-perehoda-na-zimnee-vremya-30954.html
1729 # http://www.allmoldova.com/moldova-news/1249064116.html
1731 # The substance of this change (reinstatement of the Tiraspol entry)
1732 # is from a patch from Petr Machata (2011-10-17)
1734 # From Tim Parenti (2011-10-19)
1735 # In addition, being situated at +4651+2938 would give Tiraspol
1736 # a pre-1880 LMT offset of 1:58:32.
1738 # (which agrees with the earlier entry that had been removed)
1740 # From Alexander Krivenyshev (2011-10-26)
1741 # NO need to divide Moldova into two timezones at this point.
1742 # As of today, Transnistria (Pridnestrovie)- Tiraspol reversed its own
1743 # decision to abolish DST this winter.
1744 # Following Moldova and neighboring Ukraine- Transnistria (Pridnestrovie)-
1745 # Tiraspol will go back to winter time on October 30, 2011.
1746 # News from Moldova (in russian):
1747 # http://ru.publika.md/link_317061.html
1750 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1751 Zone Europe/Chisinau 1:55:20 - LMT 1880
1752 1:55 - CMT 1918 Feb 15 # Chisinau MT
1753 1:44:24 - BMT 1931 Jul 24 # Bucharest MT
1754 2:00 Romania EE%sT 1940 Aug 15
1755 2:00 1:00 EEST 1941 Jul 17
1756 1:00 C-Eur CE%sT 1944 Aug 24
1757 3:00 Russia MSK/MSD 1990
1758 3:00 - MSK 1990 May 6
1760 2:00 Russia EE%sT 1992
1761 2:00 E-Eur EE%sT 1997
1762 # See Romania commentary for the guessed 1997 transition to EU rules.
1766 # Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
1767 # more precise 0:09:21.
1768 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1769 Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
1770 0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
1771 0:00 France WE%sT 1945 Sep 16 3:00
1772 1:00 France CE%sT 1977
1776 # See Europe/Belgrade.
1780 # Howse writes that the Netherlands' railways used GMT between 1892 and 1940,
1781 # but for other purposes the Netherlands used Amsterdam mean time.
1783 # However, Robert H. van Gent writes (2001-04-01):
1784 # Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00
1785 # Amsterdam mean time) onwards, the whole of the Netherlands (including
1786 # the Dutch railways) was required by law to observe Amsterdam mean time
1787 # (19 minutes 32.13 seconds ahead of GMT). This had already been the
1788 # common practice (except for the railways) for many decades but it was
1789 # not until 1909 when the Dutch government finally defined this by law.
1790 # On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and
1791 # was generally known as Dutch Time ("Nederlandse Tijd").
1794 # 1892-05-01 was the date when the Dutch railways were by law required to
1795 # observe GMT while the remainder of the Netherlands adhered to the common
1796 # practice of following Amsterdam mean time.
1799 # In 1835 the authorities of the province of North Holland requested the
1800 # municipal authorities of the towns and cities in the province to observe
1801 # Amsterdam mean time but I do not know in how many cases this request was
1802 # actually followed.
1804 # From 1852 onwards the Dutch telegraph offices were by law required to
1805 # observe Amsterdam mean time. As the time signals from the observatory of
1806 # Leiden were also distributed by the telegraph system, I assume that most
1807 # places linked up with the telegraph (and railway) system automatically
1808 # adopted Amsterdam mean time.
1810 # Although the early Dutch railway companies initially observed a variety
1811 # of times, most of them had adopted Amsterdam mean time by 1858 but it
1812 # was not until 1866 when they were all required by law to observe
1813 # Amsterdam mean time.
1815 # The data entries before 1945 are taken from
1816 # http://www.phys.uu.nl/~vgent/wettijd/wettijd.htm
1818 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1819 Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time
1820 Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time
1821 Rule Neth 1917 only - Apr 16 2:00s 1:00 NST
1822 Rule Neth 1917 only - Sep 17 2:00s 0 AMT
1823 Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST
1824 Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT
1825 Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST
1826 Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT
1827 Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST
1828 Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST
1829 Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST
1830 # From 1926 through 1939 DST began 05-15, except that it was delayed by a week
1831 # in years when 05-15 fell in the Pentecost weekend.
1832 Rule Neth 1926 1931 - May 15 2:00s 1:00 NST
1833 Rule Neth 1932 only - May 22 2:00s 1:00 NST
1834 Rule Neth 1933 1936 - May 15 2:00s 1:00 NST
1835 Rule Neth 1937 only - May 22 2:00s 1:00 NST
1836 Rule Neth 1937 only - Jul 1 0:00 1:00 S
1837 Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 -
1838 Rule Neth 1938 1939 - May 15 2:00s 1:00 S
1839 Rule Neth 1945 only - Apr 2 2:00s 1:00 S
1840 Rule Neth 1945 only - Sep 16 2:00s 0 -
1842 # Amsterdam Mean Time was +00:19:32.13 exactly, but the .13 is omitted
1843 # below because the current format requires GMTOFF to be an integer.
1844 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1845 Zone Europe/Amsterdam 0:19:32 - LMT 1835
1846 0:19:32 Neth %s 1937 Jul 1
1847 0:20 Neth NE%sT 1940 May 16 0:00 # Dutch Time
1848 1:00 C-Eur CE%sT 1945 Apr 2 2:00
1849 1:00 Neth CE%sT 1977
1853 # http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks &
1855 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1856 Rule Norway 1916 only - May 22 1:00 1:00 S
1857 Rule Norway 1916 only - Sep 30 0:00 0 -
1858 Rule Norway 1945 only - Apr 2 2:00s 1:00 S
1859 Rule Norway 1945 only - Oct 1 2:00s 0 -
1860 Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S
1861 Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 -
1862 Rule Norway 1965 only - Apr 25 2:00s 1:00 S
1863 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1864 Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1
1865 1:00 Norway CE%sT 1940 Aug 10 23:00
1866 1:00 C-Eur CE%sT 1945 Apr 2 2:00
1867 1:00 Norway CE%sT 1980
1870 # Svalbard & Jan Mayen
1872 # From Steffen Thorsen (2001-05-01):
1873 # Although I could not find it explicitly, it seems that Jan Mayen and
1874 # Svalbard have been using the same time as Norway at least since the
1875 # time they were declared as parts of Norway. Svalbard was declared
1876 # as a part of Norway by law of 1925-07-17 no 11, section 4 and Jan
1877 # Mayen by law of 1930-02-27 no 2, section 2. (From
1878 # <http://www.lovdata.no/all/nl-19250717-011.html> and
1879 # <http://www.lovdata.no/all/nl-19300227-002.html>). The law/regulation
1880 # for normal/standard time in Norway is from 1894-06-29 no 1 (came
1881 # into operation on 1895-01-01) and Svalbard/Jan Mayen seem to be a
1882 # part of this law since 1925/1930. (From
1883 # <http://www.lovdata.no/all/nl-18940629-001.html>) I have not been
1884 # able to find if Jan Mayen used a different time zone (e.g. -0100)
1885 # before 1930. Jan Mayen has only been "inhabited" since 1921 by
1886 # Norwegian meteorologists and maybe used the same time as Norway ever
1887 # since 1921. Svalbard (Arctic/Longyearbyen) has been inhabited since
1888 # before 1895, and therefore probably changed the local time somewhere
1889 # between 1895 and 1925 (inclusive).
1891 # From Paul Eggert (2013-09-04):
1893 # Actually, Jan Mayen was never occupied by Germany during World War II,
1894 # so it must have diverged from Oslo time during the war, as Oslo was
1895 # keeping Berlin time.
1897 # <http://home.no.net/janmayen/history.htm> says that the meteorologists
1898 # burned down their station in 1940 and left the island, but returned in
1899 # 1941 with a small Norwegian garrison and continued operations despite
1900 # frequent air attacks from Germans. In 1943 the Americans established a
1901 # radiolocating station on the island, called "Atlantic City". Possibly
1902 # the UT offset changed during the war, but I think it unlikely that
1903 # Jan Mayen used German daylight-saving rules.
1905 # Svalbard is more complicated, as it was raided in August 1941 by an
1906 # Allied party that evacuated the civilian population to England (says
1907 # <http://www.bartleby.com/65/sv/Svalbard.html>). The Svalbard FAQ
1908 # <http://www.svalbard.com/SvalbardFAQ.html> says that the Germans were
1909 # expelled on 1942-05-14. However, small parties of Germans did return,
1910 # and according to Wilhelm Dege's book "War North of 80" (1954)
1911 # http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html
1912 # the German armed forces at the Svalbard weather station code-named
1913 # Haudegen did not surrender to the Allies until September 1945.
1915 # All these events predate our cutoff date of 1970, so use Europe/Oslo
1916 # for these regions.
1917 Link Europe/Oslo Arctic/Longyearbyen
1921 # The 1919 dates and times can be found in Tygodnik Urzędowy nr 1 (1919-03-20),
1922 # <http://www.wbc.poznan.pl/publication/32156> pp 1-2.
1924 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1925 Rule Poland 1918 1919 - Sep 16 2:00s 0 -
1926 Rule Poland 1919 only - Apr 15 2:00s 1:00 S
1927 Rule Poland 1944 only - Apr 3 2:00s 1:00 S
1928 # Whitman gives 1944 Nov 30; go with Shanks & Pottenger.
1929 Rule Poland 1944 only - Oct 4 2:00 0 -
1930 # For 1944-1948 Whitman gives the previous day; go with Shanks & Pottenger.
1931 Rule Poland 1945 only - Apr 29 0:00 1:00 S
1932 Rule Poland 1945 only - Nov 1 0:00 0 -
1933 # For 1946 on the source is Kazimierz Borkowski,
1934 # Toruń Center for Astronomy, Dept. of Radio Astronomy, Nicolaus Copernicus U.,
1935 # http://www.astro.uni.torun.pl/~kb/Artykuly/U-PA/Czas2.htm#tth_tAb1
1936 # Thanks to Przemysław Augustyniak (2005-05-28) for this reference.
1937 # He also gives these further references:
1938 # Mon Pol nr 13, poz 162 (1995) <http://www.abc.com.pl/serwis/mp/1995/0162.htm>
1939 # Druk nr 2180 (2003) <http://www.senat.gov.pl/k5/dok/sejm/053/2180.pdf>
1940 Rule Poland 1946 only - Apr 14 0:00s 1:00 S
1941 Rule Poland 1946 only - Oct 7 2:00s 0 -
1942 Rule Poland 1947 only - May 4 2:00s 1:00 S
1943 Rule Poland 1947 1949 - Oct Sun>=1 2:00s 0 -
1944 Rule Poland 1948 only - Apr 18 2:00s 1:00 S
1945 Rule Poland 1949 only - Apr 10 2:00s 1:00 S
1946 Rule Poland 1957 only - Jun 2 1:00s 1:00 S
1947 Rule Poland 1957 1958 - Sep lastSun 1:00s 0 -
1948 Rule Poland 1958 only - Mar 30 1:00s 1:00 S
1949 Rule Poland 1959 only - May 31 1:00s 1:00 S
1950 Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
1951 Rule Poland 1960 only - Apr 3 1:00s 1:00 S
1952 Rule Poland 1961 1964 - May lastSun 1:00s 1:00 S
1953 Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
1954 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1955 Zone Europe/Warsaw 1:24:00 - LMT 1880
1956 1:24:00 - WMT 1915 Aug 5 # Warsaw Mean Time
1957 1:00 C-Eur CE%sT 1918 Sep 16 3:00
1958 2:00 Poland EE%sT 1922 Jun
1959 1:00 Poland CE%sT 1940 Jun 23 2:00
1960 1:00 C-Eur CE%sT 1944 Oct
1961 1:00 Poland CE%sT 1977
1962 1:00 W-Eur CE%sT 1988
1967 # From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
1968 # According to a Portuguese decree (1911-05-26)
1969 # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
1970 # Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00.
1971 # Round the old offset to -0:36:45. This agrees with Willett but disagrees
1972 # with Shanks, who says the transition occurred on 1911-05-24 at 00:00 for
1973 # Europe/Lisbon, Atlantic/Azores, and Atlantic/Madeira.
1975 # From Rui Pedro Salgueiro (1992-11-12):
1976 # Portugal has recently (September, 27) changed timezone
1977 # (from WET to MET or CET) to harmonize with EEC.
1979 # Martin Bruckmann (1996-02-29) reports via Peter Ilieve
1980 # that Portugal is reverting to 0:00 by not moving its clocks this spring.
1981 # The new Prime Minister was fed up with getting up in the dark in the winter.
1983 # From Paul Eggert (1996-11-12):
1984 # IATA SSIM (1991-09) reports several 1991-09 and 1992-09 transitions
1985 # at 02:00u, not 01:00u. Assume that these are typos.
1986 # IATA SSIM (1991/1992) reports that the Azores were at -1:00.
1987 # IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00.
1988 # Guess that the Azores changed to EU rules in 1992 (since that's when Portugal
1989 # harmonized with the EU), and that they stayed +0:00 that winter.
1991 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1992 # DSH writes that despite Decree 1,469 (1915), the change to the clocks was not
1993 # done every year, depending on what Spain did, because of railroad schedules.
1994 # Go with Shanks & Pottenger.
1995 Rule Port 1916 only - Jun 17 23:00 1:00 S
1996 # Whitman gives 1916 Oct 31; go with Shanks & Pottenger.
1997 Rule Port 1916 only - Nov 1 1:00 0 -
1998 Rule Port 1917 only - Feb 28 23:00s 1:00 S
1999 Rule Port 1917 1921 - Oct 14 23:00s 0 -
2000 Rule Port 1918 only - Mar 1 23:00s 1:00 S
2001 Rule Port 1919 only - Feb 28 23:00s 1:00 S
2002 Rule Port 1920 only - Feb 29 23:00s 1:00 S
2003 Rule Port 1921 only - Feb 28 23:00s 1:00 S
2004 Rule Port 1924 only - Apr 16 23:00s 1:00 S
2005 Rule Port 1924 only - Oct 14 23:00s 0 -
2006 Rule Port 1926 only - Apr 17 23:00s 1:00 S
2007 Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 -
2008 Rule Port 1927 only - Apr 9 23:00s 1:00 S
2009 Rule Port 1928 only - Apr 14 23:00s 1:00 S
2010 Rule Port 1929 only - Apr 20 23:00s 1:00 S
2011 Rule Port 1931 only - Apr 18 23:00s 1:00 S
2012 # Whitman gives 1931 Oct 8; go with Shanks & Pottenger.
2013 Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 -
2014 Rule Port 1932 only - Apr 2 23:00s 1:00 S
2015 Rule Port 1934 only - Apr 7 23:00s 1:00 S
2016 # Whitman gives 1934 Oct 5; go with Shanks & Pottenger.
2017 Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 -
2018 # Shanks & Pottenger give 1935 Apr 30; go with Whitman.
2019 Rule Port 1935 only - Mar 30 23:00s 1:00 S
2020 Rule Port 1936 only - Apr 18 23:00s 1:00 S
2021 # Whitman gives 1937 Apr 2; go with Shanks & Pottenger.
2022 Rule Port 1937 only - Apr 3 23:00s 1:00 S
2023 Rule Port 1938 only - Mar 26 23:00s 1:00 S
2024 Rule Port 1939 only - Apr 15 23:00s 1:00 S
2025 # Whitman gives 1939 Oct 7; go with Shanks & Pottenger.
2026 Rule Port 1939 only - Nov 18 23:00s 0 -
2027 Rule Port 1940 only - Feb 24 23:00s 1:00 S
2028 # Shanks & Pottenger give 1940 Oct 7; go with Whitman.
2029 Rule Port 1940 1941 - Oct 5 23:00s 0 -
2030 Rule Port 1941 only - Apr 5 23:00s 1:00 S
2031 Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 S
2032 Rule Port 1942 only - Apr 25 22:00s 2:00 M # Midsummer
2033 Rule Port 1942 only - Aug 15 22:00s 1:00 S
2034 Rule Port 1942 1945 - Oct Sat>=24 23:00s 0 -
2035 Rule Port 1943 only - Apr 17 22:00s 2:00 M
2036 Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 S
2037 Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 M
2038 Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 S
2039 Rule Port 1946 only - Oct Sat>=1 23:00s 0 -
2040 Rule Port 1947 1949 - Apr Sun>=1 2:00s 1:00 S
2041 Rule Port 1947 1949 - Oct Sun>=1 2:00s 0 -
2042 # Shanks & Pottenger say DST was observed in 1950; go with Whitman.
2043 # Whitman gives Oct lastSun for 1952 on; go with Shanks & Pottenger.
2044 Rule Port 1951 1965 - Apr Sun>=1 2:00s 1:00 S
2045 Rule Port 1951 1965 - Oct Sun>=1 2:00s 0 -
2046 Rule Port 1977 only - Mar 27 0:00s 1:00 S
2047 Rule Port 1977 only - Sep 25 0:00s 0 -
2048 Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 S
2049 Rule Port 1978 only - Oct 1 0:00s 0 -
2050 Rule Port 1979 1982 - Sep lastSun 1:00s 0 -
2051 Rule Port 1980 only - Mar lastSun 0:00s 1:00 S
2052 Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 S
2053 Rule Port 1983 only - Mar lastSun 2:00s 1:00 S
2055 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2056 Zone Europe/Lisbon -0:36:45 - LMT 1884
2057 -0:36:45 - LMT 1912 Jan 1 # Lisbon Mean Time
2058 0:00 Port WE%sT 1966 Apr 3 2:00
2059 1:00 - CET 1976 Sep 26 1:00
2060 0:00 Port WE%sT 1983 Sep 25 1:00s
2061 0:00 W-Eur WE%sT 1992 Sep 27 1:00s
2062 1:00 EU CE%sT 1996 Mar 31 1:00u
2064 Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
2065 -1:54:32 - HMT 1912 Jan 1 # Horta Mean Time
2066 -2:00 Port AZO%sT 1966 Apr 3 2:00 # Azores Time
2067 -1:00 Port AZO%sT 1983 Sep 25 1:00s
2068 -1:00 W-Eur AZO%sT 1992 Sep 27 1:00s
2069 0:00 EU WE%sT 1993 Mar 28 1:00u
2071 Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
2072 -1:07:36 - FMT 1912 Jan 1 # Funchal Mean Time
2073 -1:00 Port MAD%sT 1966 Apr 3 2:00 # Madeira Time
2074 0:00 Port WE%sT 1983 Sep 25 1:00s
2079 # From Paul Eggert (1999-10-07):
2080 # Nine O'clock <http://www.nineoclock.ro/POL/1778pol.html>
2081 # (1998-10-23) reports that the switch occurred at
2082 # 04:00 local time in fall 1998. For lack of better info,
2083 # assume that Romania and Moldova switched to EU rules in 1997,
2084 # the same year as Bulgaria.
2086 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2087 Rule Romania 1932 only - May 21 0:00s 1:00 S
2088 Rule Romania 1932 1939 - Oct Sun>=1 0:00s 0 -
2089 Rule Romania 1933 1939 - Apr Sun>=2 0:00s 1:00 S
2090 Rule Romania 1979 only - May 27 0:00 1:00 S
2091 Rule Romania 1979 only - Sep lastSun 0:00 0 -
2092 Rule Romania 1980 only - Apr 5 23:00 1:00 S
2093 Rule Romania 1980 only - Sep lastSun 1:00 0 -
2094 Rule Romania 1991 1993 - Mar lastSun 0:00s 1:00 S
2095 Rule Romania 1991 1993 - Sep lastSun 0:00s 0 -
2096 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2097 Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct
2098 1:44:24 - BMT 1931 Jul 24 # Bucharest MT
2099 2:00 Romania EE%sT 1981 Mar 29 2:00s
2100 2:00 C-Eur EE%sT 1991
2101 2:00 Romania EE%sT 1994
2102 2:00 E-Eur EE%sT 1997
2108 # From Alexander Krivenyshev (2011-09-15):
2109 # Based on last Russian Government Decree # 725 on August 31, 2011
2110 # (Government document
2111 # http://www.government.ru/gov/results/16355/print/
2113 # there are few corrections have to be made for some Russian time zones...
2114 # All updated Russian Time Zones were placed in table and translated to English
2115 # by WorldTimeZone.com at the link below:
2116 # http://www.worldtimezone.com/dst_news/dst_news_russia36.htm
2118 # From Sanjeev Gupta (2011-09-27):
2119 # Scans of [Decree #23 of January 8, 1992] are available at:
2120 # http://government.consultant.ru/page.aspx?1223966
2121 # They are in Cyrillic letters (presumably Russian).
2123 # From Arthur David Olson (2012-05-09):
2124 # Regarding the instant when clocks in time-zone-shifting parts of Russia
2125 # changed in September 2011:
2128 # http://government.ru/gov/results/16355/
2129 # which, according to translate.google.com, begins "Decree of August 31,
2130 # 2011 No 725" and contains no other dates or "effective date" information.
2133 # http://www.rg.ru/2011/09/06/chas-zona-dok.html
2134 # which, according to translate.google.com, begins "Resolution of the
2135 # Government of the Russian Federation on August 31, 2011 N 725" and also
2136 # contains "Date first official publication: September 6, 2011 Posted on:
2137 # in the 'RG' - Federal Issue number 5573 September 6, 2011" but which
2138 # does not contain any "effective date" information.
2141 # http://en.wikipedia.org/wiki/Oymyakonsky_District#cite_note-RuTime-7
2142 # which, in note 8, contains "Resolution #725 of August 31, 2011...
2143 # Effective as of after 7 days following the day of the official publication"
2144 # but which does not contain any reference to September 6, 2011.
2146 # The Wikipedia article refers to
2147 # http://base.consultant.ru/cons/cgi/online.cgi?req=doc;base=LAW;n=118896
2148 # which seems to copy the text of the government.ru page.
2150 # Tobias Conradi combines Wikipedia's
2151 # "as of after 7 days following the day of the official publication"
2152 # with www.rg.ru's "Date of first official publication: September 6, 2011" to
2153 # get September 13, 2011 as the cutover date (unusually, a Tuesday, as Tobias
2156 # None of the sources indicates a time of day for changing clocks.
2158 # Go with 2011-09-13 0:00s.
2160 # From Alexander Krivenyshev (2014-07-01):
2161 # According to the Russian news (ITAR-TASS News Agency)
2162 # http://en.itar-tass.com/russia/738562
2163 # the State Duma has approved ... the draft bill on returning to
2164 # winter time standard and return Russia 11 time zones. The new
2165 # regulations will come into effect on October 26, 2014 at 02:00 ...
2166 # http://asozd2.duma.gov.ru/main.nsf/%28Spravka%29?OpenAgent&RN=431985-6&02
2167 # Here is a link where we put together table (based on approved Bill N
2168 # 431985-6) with proposed 11 Russian time zones and corresponding
2169 # areas/cities/administrative centers in the Russian Federation (in English):
2170 # http://www.worldtimezone.com/dst_news/dst_news_russia65.html
2172 # From Alexander Krivenyshev (2014-07-22):
2173 # Putin signed the Federal Law 431985-6 ... (in Russian)
2174 # http://itar-tass.com/obschestvo/1333711
2175 # http://www.pravo.gov.ru:8080/page.aspx?111660
2176 # http://www.kremlin.ru/acts/46279
2177 # From October 26, 2014 the new Russian time zone map will looks like this:
2178 # http://www.worldtimezone.com/dst_news/dst_news_russia-map-2014-07.html
2180 # From Paul Eggert (2006-03-22):
2181 # Except for Moscow after 1919-07-01, I invented the time zone abbreviations.
2182 # Moscow time zone abbreviations after 1919-07-01, and Moscow rules after 1991,
2183 # are from Andrey A. Chernov. The rest is from Shanks & Pottenger,
2184 # except we follow Chernov's report that 1992 DST transitions were Sat
2185 # 23:00, not Sun 02:00s.
2187 # From Stanislaw A. Kuzikowski (1994-06-29):
2188 # But now it is some months since Novosibirsk is 3 hours ahead of Moscow!
2189 # I do not know why they have decided to make this change;
2190 # as far as I remember it was done exactly during winter->summer switching
2191 # so we (Novosibirsk) simply did not switch.
2193 # From Andrey A. Chernov (1996-10-04):
2194 # 'MSK' and 'MSD' were born and used initially on Moscow computers with
2195 # UNIX-like OSes by several developer groups (e.g. Demos group, Kiae group)....
2196 # The next step was the UUCP network, the Relcom predecessor
2197 # (used mainly for mail), and MSK/MSD was actively used there.
2199 # From Chris Carrier (1996-10-30):
2200 # According to a friend of mine who rode the Trans-Siberian Railroad from
2201 # Moscow to Irkutsk in 1995, public air and rail transport in Russia ...
2202 # still follows Moscow time, no matter where in Russia it is located.
2204 # For Grozny, Chechnya, we have the following story from
2205 # John Daniszewski, "Scavengers in the Rubble", Los Angeles Times (2001-02-07):
2206 # News - often false - is spread by word of mouth. A rumor that it was
2207 # time to move the clocks back put this whole city out of sync with
2208 # the rest of Russia for two weeks - even soldiers stationed here began
2209 # enforcing curfew at the wrong time.
2211 # From Gwillim Law (2001-06-05):
2212 # There's considerable evidence that Sakhalin Island used to be in
2213 # UTC+11, and has changed to UTC+10, in this decade. I start with the
2214 # SSIM, which listed Yuzhno-Sakhalinsk in zone RU10 along with Magadan
2215 # until February 1997, and then in RU9 with Khabarovsk and Vladivostok
2216 # since September 1997.... Although the Kuril Islands are
2217 # administratively part of Sakhalin oblast', they appear to have
2218 # remained on UTC+11 along with Magadan.
2220 # From Tim Parenti (2014-07-06):
2221 # The comments detailing the coverage of each Russian zone are meant to assist
2222 # with maintenance only and represent our best guesses as to which regions
2223 # are covered by each zone. They are not meant to be taken as an authoritative
2224 # listing. The region codes listed come from
2225 # http://en.wikipedia.org/w/?title=Federal_subjects_of_Russia&oldid=611810498
2226 # and are used for convenience only; no guarantees are made regarding their
2227 # future stability. ISO 3166-2:RU codes are also listed for first-level
2228 # divisions where available.
2230 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2233 # From Tim Parenti (2014-07-03):
2234 # Europe/Kaliningrad covers...
2235 # 39 RU-KGD Kaliningrad Oblast
2237 Zone Europe/Kaliningrad 1:22:00 - LMT 1893 Apr
2238 1:00 C-Eur CE%sT 1945
2239 2:00 Poland CE%sT 1946
2240 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
2241 2:00 Russia EE%sT 2011 Mar 27 2:00s
2242 3:00 - FET 2014 Oct 26 2:00s
2246 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2247 # Europe/Moscow covers...
2248 # 01 RU-AD Adygea, Republic of
2249 # 05 RU-DA Dagestan, Republic of
2250 # 06 RU-IN Ingushetia, Republic of
2251 # 07 RU-KB Kabardino-Balkar Republic
2252 # 08 RU-KL Kalmykia, Republic of
2253 # 09 RU-KC Karachay-Cherkess Republic
2254 # 10 RU-KR Karelia, Republic of
2255 # 11 RU-KO Komi Republic
2256 # 12 RU-ME Mari El Republic
2257 # 13 RU-MO Mordovia, Republic of
2258 # 15 RU-SE North Ossetia-Alania, Republic of
2259 # 16 RU-TA Tatarstan, Republic of
2260 # 20 RU-CE Chechen Republic
2261 # 21 RU-CU Chuvash Republic
2262 # 23 RU-KDA Krasnodar Krai
2263 # 26 RU-STA Stavropol Krai
2264 # 29 RU-ARK Arkhangelsk Oblast
2265 # 31 RU-BEL Belgorod Oblast
2266 # 32 RU-BRY Bryansk Oblast
2267 # 33 RU-VLA Vladimir Oblast
2268 # 35 RU-VLG Vologda Oblast
2269 # 36 RU-VOR Voronezh Oblast
2270 # 37 RU-IVA Ivanovo Oblast
2271 # 40 RU-KLU Kaluga Oblast
2272 # 44 RU-KOS Kostroma Oblast
2273 # 46 RU-KRS Kursk Oblast
2274 # 47 RU-LEN Leningrad Oblast
2275 # 48 RU-LIP Lipetsk Oblast
2276 # 50 RU-MOS Moscow Oblast
2277 # 51 RU-MUR Murmansk Oblast
2278 # 52 RU-NIZ Nizhny Novgorod Oblast
2279 # 53 RU-NGR Novgorod Oblast
2280 # 57 RU-ORL Oryol Oblast
2281 # 58 RU-PNZ Penza Oblast
2282 # 60 RU-PSK Pskov Oblast
2283 # 61 RU-ROS Rostov Oblast
2284 # 62 RU-RYA Ryazan Oblast
2285 # 67 RU-SMO Smolensk Oblast
2286 # 68 RU-TAM Tambov Oblast
2287 # 69 RU-TVE Tver Oblast
2288 # 71 RU-TUL Tula Oblast
2289 # 73 RU-ULY Ulyanovsk Oblast
2290 # 76 RU-YAR Yaroslavl Oblast
2292 # 78 RU-SPE Saint Petersburg
2293 # 83 RU-NEN Nenets Autonomous Okrug
2295 # From Vladimir Karpinsky (2014-07-08):
2296 # LMT in Moscow (before Jul 3, 1916) is 2:30:17, that was defined by Moscow
2297 # Observatory (coordinates: 55 deg. 45'29.70", 37 deg. 34'05.30")....
2298 # LMT in Moscow since Jul 3, 1916 is 2:31:01 as a result of new standard.
2299 # (The info is from the book by Byalokoz ... p. 18.)
2300 # The time in St. Petersburg as capital of Russia was defined by
2301 # Pulkov observatory, near St. Petersburg. In 1916 LMT Moscow
2302 # was synchronized with LMT St. Petersburg (+30 minutes), (Pulkov observatory
2303 # coordinates: 59 deg. 46'18.70", 30 deg. 19'40.70") so 30 deg. 19'40.70" >
2304 # 2h01m18.7s = 2:01:19. LMT Moscow = LMT St.Petersburg + 30m 2:01:19 + 0:30 =
2307 # From Paul Eggert (2014-07-08):
2308 # Milne does not list Moscow, but suggests that its time might be listed in
2309 # Résumés mensuels et annuels des observations météorologiques (1895).
2310 # Presumably this is OCLC 85825704, a journal published with parallel text in
2311 # Russian and French. This source has not been located; go with Karpinsky.
2313 Zone Europe/Moscow 2:30:17 - LMT 1880
2314 2:30:17 - MMT 1916 Jul 3 # Moscow Mean Time
2315 2:31:19 Russia %s 1919 Jul 1 2:00
2316 3:00 Russia %s 1921 Oct
2317 3:00 Russia MSK/MSD 1922 Oct
2318 2:00 - EET 1930 Jun 21
2319 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
2320 2:00 Russia EE%sT 1992 Jan 19 2:00s
2321 3:00 Russia MSK/MSD 2011 Mar 27 2:00s
2322 4:00 - MSK 2014 Oct 26 2:00s
2326 # From Tim Parenti (2014-07-03):
2327 # Europe/Simferopol covers...
2328 # ** **** Crimea, Republic of
2329 # ** **** Sevastopol
2331 Zone Europe/Simferopol 2:16:24 - LMT 1880
2332 2:16 - SMT 1924 May 2 # Simferopol Mean T
2333 2:00 - EET 1930 Jun 21
2335 1:00 C-Eur CE%sT 1944 Apr 13
2336 3:00 Russia MSK/MSD 1990
2337 3:00 - MSK 1990 Jul 1 2:00
2339 # Central Crimea used Moscow time 1994/1997.
2341 # From Paul Eggert (2006-03-22):
2342 # The _Economist_ (1994-05-28, p 45) reports that central Crimea switched
2343 # from Kiev to Moscow time sometime after the January 1994 elections.
2344 # Shanks (1999) says "date of change uncertain", but implies that it happened
2345 # sometime between the 1994 DST switches. Shanks & Pottenger simply say
2346 # 1994-09-25 03:00, but that can't be right. For now, guess it
2348 2:00 E-Eur EE%sT 1994 May
2349 # From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev.
2350 3:00 E-Eur MSK/MSD 1996 Mar 31 3:00s
2351 3:00 1:00 MSD 1996 Oct 27 3:00s
2352 # IATA SSIM (1997-09) says Crimea switched to EET/EEST.
2353 # Assume it happened in March by not changing the clocks.
2354 3:00 Russia MSK/MSD 1997
2355 3:00 - MSK 1997 Mar lastSun 1:00u
2356 # From Alexander Krivenyshev (2014-03-17):
2357 # time change at 2:00 (2am) on March 30, 2014
2358 # http://vz.ru/news/2014/3/17/677464.html
2359 # From Paul Eggert (2014-03-30):
2360 # Simferopol and Sevastopol reportedly changed their central town clocks
2361 # late the previous day, but this appears to have been ceremonial
2362 # and the discrepancies are small enough to not worry about.
2363 2:00 EU EE%sT 2014 Mar 30 2:00
2364 4:00 - MSK 2014 Oct 26 2:00s
2368 # From Tim Parenti (2014-07-03):
2369 # Europe/Volgograd covers...
2370 # 30 RU-AST Astrakhan Oblast
2371 # 34 RU-VGG Volgograd Oblast
2372 # 43 RU-KIR Kirov Oblast
2373 # 64 RU-SAR Saratov Oblast
2375 # From Paul Eggert (2006-05-09):
2376 # Shanks & Pottenger say Kirov is still at +0400 but Wikipedia says +0300.
2377 # Perhaps it switched after the others? But we have no data.
2379 Zone Europe/Volgograd 2:57:40 - LMT 1920 Jan 3
2380 3:00 - TSAT 1925 Apr 6 # Tsaritsyn Time
2381 3:00 - STAT 1930 Jun 21 # Stalingrad Time
2382 4:00 - STAT 1961 Nov 11
2383 4:00 Russia VOL%sT 1989 Mar 26 2:00s # Volgograd T
2384 3:00 Russia VOL%sT 1991 Mar 31 2:00s
2385 4:00 - VOLT 1992 Mar 29 2:00s
2386 3:00 Russia MSK 2011 Mar 27 2:00s
2387 4:00 - MSK 2014 Oct 26 2:00s
2391 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2392 # Europe/Samara covers...
2393 # 18 RU-UD Udmurt Republic
2394 # 63 RU-SAM Samara Oblast
2396 # Byalokoz 1919 says Samara was 3:20:20.
2398 Zone Europe/Samara 3:20:20 - LMT 1919 Jul 1 2:00
2399 3:00 - SAMT 1930 Jun 21
2400 4:00 - SAMT 1935 Jan 27
2401 4:00 Russia KUY%sT 1989 Mar 26 2:00s # Kuybyshev
2402 3:00 Russia MSK/MSD 1991 Mar 31 2:00s
2403 2:00 Russia EE%sT 1991 Sep 29 2:00s
2404 3:00 - KUYT 1991 Oct 20 3:00
2405 4:00 Russia SAM%sT 2010 Mar 28 2:00s # Samara Time
2406 3:00 Russia SAM%sT 2011 Mar 27 2:00s
2410 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2411 # Asia/Yekaterinburg covers...
2412 # 02 RU-BA Bashkortostan, Republic of
2413 # 90 RU-PER Perm Krai
2414 # 45 RU-KGN Kurgan Oblast
2415 # 56 RU-ORE Orenburg Oblast
2416 # 66 RU-SVE Sverdlovsk Oblast
2417 # 72 RU-TYU Tyumen Oblast
2418 # 74 RU-CHE Chelyabinsk Oblast
2419 # 86 RU-KHM Khanty-Mansi Autonomous Okrug - Yugra
2420 # 89 RU-YAN Yamalo-Nenets Autonomous Okrug
2422 # Note: Effective 2005-12-01, (59) Perm Oblast and (81) Komi-Permyak
2423 # Autonomous Okrug merged to form (90, RU-PER) Perm Krai.
2425 # Milne says Yekaterinburg was 4:02:32.9; round to nearest.
2426 # Byalokoz 1919 says its provincial time was based on Perm, at 3:45:05.
2427 # Assume it switched on 1916-07-03, the time of the new standard.
2428 # The 1919 and 1930 transitions are from Shanks.
2430 Zone Asia/Yekaterinburg 4:02:33 - LMT 1916 Jul 3
2431 3:45:05 - PMT 1919 Jul 15 4:00
2432 4:00 - SVET 1930 Jun 21 # Sverdlovsk Time
2433 5:00 Russia SVE%sT 1991 Mar 31 2:00s
2434 4:00 Russia SVE%sT 1992 Jan 19 2:00s
2435 5:00 Russia YEK%sT 2011 Mar 27 2:00s
2436 6:00 - YEKT 2014 Oct 26 2:00s
2440 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2441 # Asia/Omsk covers...
2442 # 04 RU-AL Altai Republic
2443 # 22 RU-ALT Altai Krai
2444 # 55 RU-OMS Omsk Oblast
2446 # Byalokoz 1919 says Omsk was 4:53:30.
2448 Zone Asia/Omsk 4:53:30 - LMT 1919 Nov 14
2449 5:00 - OMST 1930 Jun 21 # Omsk Time
2450 6:00 Russia OMS%sT 1991 Mar 31 2:00s
2451 5:00 Russia OMS%sT 1992 Jan 19 2:00s
2452 6:00 Russia OMS%sT 2011 Mar 27 2:00s
2453 7:00 - OMST 2014 Oct 26 2:00s
2457 # From Tim Parenti (2014-07-03):
2458 # Asia/Novosibirsk covers...
2459 # 54 RU-NVS Novosibirsk Oblast
2460 # 70 RU-TOM Tomsk Oblast
2462 # From Paul Eggert (2006-08-19): I'm guessing about Tomsk here; it's
2463 # not clear when it switched from +7 to +6.
2465 Zone Asia/Novosibirsk 5:31:40 - LMT 1919 Dec 14 6:00
2466 6:00 - NOVT 1930 Jun 21 # Novosibirsk Time
2467 7:00 Russia NOV%sT 1991 Mar 31 2:00s
2468 6:00 Russia NOV%sT 1992 Jan 19 2:00s
2469 7:00 Russia NOV%sT 1993 May 23 # say Shanks & P.
2470 6:00 Russia NOV%sT 2011 Mar 27 2:00s
2471 7:00 - NOVT 2014 Oct 26 2:00s
2475 # From Tim Parenti (2014-07-03):
2476 # Asia/Novokuznetsk covers...
2477 # 42 RU-KEM Kemerovo Oblast
2479 # From Alexander Krivenyshev (2009-10-13):
2480 # Kemerovo oblast' (Kemerovo region) in Russia will change current time zone on
2482 # from current Russia Zone 6 - Krasnoyarsk Time Zone (KRA) UTC +0700
2483 # to Russia Zone 5 - Novosibirsk Time Zone (NOV) UTC +0600
2485 # This is according to Government of Russia decree # 740, on September
2486 # 14, 2009 "Application in the territory of the Kemerovo region the Fifth
2487 # time zone." ("Russia Zone 5" or old "USSR Zone 5" is GMT +0600)
2489 # Russian Government web site (Russian language)
2490 # http://www.government.ru/content/governmentactivity/rfgovernmentdecisions/archive/2009/09/14/991633.htm
2491 # or Russian-English translation by WorldTimeZone.com with reference
2492 # map to local region and new Russia Time Zone map after March 28, 2010
2493 # http://www.worldtimezone.com/dst_news/dst_news_russia03.html
2495 # Thus, when Russia will switch to DST on the night of March 28, 2010
2496 # Kemerovo region (Kemerovo oblast') will not change the clock.
2498 # As a result, Kemerovo oblast' will be in the same time zone as
2499 # Novosibirsk, Omsk, Tomsk, Barnaul and Altai Republic.
2501 # From Tim Parenti (2014-07-02), per Alexander Krivenyshev (2014-07-02):
2502 # The Kemerovo region will remain at UTC+7 through the 2014-10-26 change, thus
2503 # realigning itself with KRAT.
2505 Zone Asia/Novokuznetsk 5:48:48 - LMT 1924 May 1
2506 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time
2507 7:00 Russia KRA%sT 1991 Mar 31 2:00s
2508 6:00 Russia KRA%sT 1992 Jan 19 2:00s
2509 7:00 Russia KRA%sT 2010 Mar 28 2:00s
2510 6:00 Russia NOV%sT 2011 Mar 27 2:00s # Novosibirsk
2511 7:00 - NOVT 2014 Oct 26 2:00s
2512 7:00 - KRAT # Krasnoyarsk Time
2515 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2516 # Asia/Krasnoyarsk covers...
2517 # 17 RU-TY Tuva Republic
2518 # 19 RU-KK Khakassia, Republic of
2519 # 24 RU-KYA Krasnoyarsk Krai
2521 # Note: Effective 2007-01-01, (88) Evenk Autonomous Okrug and (84) Taymyr
2522 # Autonomous Okrug were merged into (24, RU-KYA) Krasnoyarsk Krai.
2524 # Byalokoz 1919 says Krasnoyarsk was 6:11:26.
2526 Zone Asia/Krasnoyarsk 6:11:26 - LMT 1920 Jan 6
2527 6:00 - KRAT 1930 Jun 21 # Krasnoyarsk Time
2528 7:00 Russia KRA%sT 1991 Mar 31 2:00s
2529 6:00 Russia KRA%sT 1992 Jan 19 2:00s
2530 7:00 Russia KRA%sT 2011 Mar 27 2:00s
2531 8:00 - KRAT 2014 Oct 26 2:00s
2535 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2536 # Asia/Irkutsk covers...
2537 # 03 RU-BU Buryatia, Republic of
2538 # 38 RU-IRK Irkutsk Oblast
2540 # Note: Effective 2008-01-01, (85) Ust-Orda Buryat Autonomous Okrug was
2541 # merged into (38, RU-IRK) Irkutsk Oblast.
2543 # Milne 1899 says Irkutsk was 6:57:15.
2544 # Byalokoz 1919 says Irkutsk was 6:57:05.
2547 Zone Asia/Irkutsk 6:57:05 - LMT 1880
2548 6:57:05 - IMT 1920 Jan 25 # Irkutsk Mean Time
2549 7:00 - IRKT 1930 Jun 21 # Irkutsk Time
2550 8:00 Russia IRK%sT 1991 Mar 31 2:00s
2551 7:00 Russia IRK%sT 1992 Jan 19 2:00s
2552 8:00 Russia IRK%sT 2011 Mar 27 2:00s
2553 9:00 - IRKT 2014 Oct 26 2:00s
2557 # From Tim Parenti (2014-07-06):
2558 # Asia/Chita covers...
2559 # 92 RU-ZAB Zabaykalsky Krai
2561 # Note: Effective 2008-03-01, (75) Chita Oblast and (80) Agin-Buryat
2562 # Autonomous Okrug merged to form (92, RU-ZAB) Zabaykalsky Krai.
2564 Zone Asia/Chita 7:33:52 - LMT 1919 Dec 15
2565 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2566 9:00 Russia YAK%sT 1991 Mar 31 2:00s
2567 8:00 Russia YAK%sT 1992 Jan 19 2:00s
2568 9:00 Russia YAK%sT 2011 Mar 27 2:00s
2569 10:00 - YAKT 2014 Oct 26 2:00s
2573 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
2574 # Asia/Yakutsk covers...
2575 # 28 RU-AMU Amur Oblast
2577 # ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
2578 # 14-02 **** Aldansky District
2579 # 14-04 **** Amginsky District
2580 # 14-05 **** Anabarsky District
2581 # 14-06 **** Bulunsky District
2582 # 14-07 **** Verkhnevilyuysky District
2583 # 14-10 **** Vilyuysky District
2584 # 14-11 **** Gorny District
2585 # 14-12 **** Zhigansky District
2586 # 14-13 **** Kobyaysky District
2587 # 14-14 **** Lensky District
2588 # 14-15 **** Megino-Kangalassky District
2589 # 14-16 **** Mirninsky District
2590 # 14-18 **** Namsky District
2591 # 14-19 **** Neryungrinsky District
2592 # 14-21 **** Nyurbinsky District
2593 # 14-23 **** Olenyoksky District
2594 # 14-24 **** Olyokminsky District
2595 # 14-26 **** Suntarsky District
2596 # 14-27 **** Tattinsky District
2597 # 14-29 **** Ust-Aldansky District
2598 # 14-32 **** Khangalassky District
2599 # 14-33 **** Churapchinsky District
2600 # 14-34 **** Eveno-Bytantaysky National District
2602 # From Tim Parenti (2014-07-03):
2603 # Our commentary seems to have lost mention of (14-19) Neryungrinsky District.
2604 # Since the surrounding districts of Sakha are all YAKT, assume this is, too.
2605 # Also assume its history has been the same as the rest of Asia/Yakutsk.
2607 # Byalokoz 1919 says Yakutsk was 8:38:58.
2609 Zone Asia/Yakutsk 8:38:58 - LMT 1919 Dec 15
2610 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2611 9:00 Russia YAK%sT 1991 Mar 31 2:00s
2612 8:00 Russia YAK%sT 1992 Jan 19 2:00s
2613 9:00 Russia YAK%sT 2011 Mar 27 2:00s
2614 10:00 - YAKT 2014 Oct 26 2:00s
2618 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
2619 # Asia/Vladivostok covers...
2620 # 25 RU-PRI Primorsky Krai
2621 # 27 RU-KHA Khabarovsk Krai
2622 # 79 RU-YEV Jewish Autonomous Oblast
2624 # ...and parts of (14, RU-SA) Sakha (Yakutia) Republic:
2625 # 14-09 **** Verkhoyansky District
2626 # 14-31 **** Ust-Yansky District
2628 # Milne 1899 says Vladivostok was 8:47:33.5.
2629 # Byalokoz 1919 says Vladivostok was 8:47:31.
2632 Zone Asia/Vladivostok 8:47:31 - LMT 1922 Nov 15
2633 9:00 - VLAT 1930 Jun 21 # Vladivostok Time
2634 10:00 Russia VLA%sT 1991 Mar 31 2:00s
2635 9:00 Russia VLA%sT 1992 Jan 19 2:00s
2636 10:00 Russia VLA%sT 2011 Mar 27 2:00s
2637 11:00 - VLAT 2014 Oct 26 2:00s
2641 # From Tim Parenti (2014-07-03):
2642 # Asia/Khandyga covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
2643 # 14-28 **** Tomponsky District
2644 # 14-30 **** Ust-Maysky District
2646 # From Arthur David Olson (2012-05-09):
2647 # Tomponskij and Ust'-Majskij switched from Vladivostok time to Yakutsk time
2650 # From Paul Eggert (2012-11-25):
2651 # Shanks and Pottenger (2003) has Khandyga on Yakutsk time.
2652 # Make a wild guess that it switched to Vladivostok time in 2004.
2653 # This transition is no doubt wrong, but we have no better info.
2655 Zone Asia/Khandyga 9:02:13 - LMT 1919 Dec 15
2656 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2657 9:00 Russia YAK%sT 1991 Mar 31 2:00s
2658 8:00 Russia YAK%sT 1992 Jan 19 2:00s
2659 9:00 Russia YAK%sT 2004
2660 10:00 Russia VLA%sT 2011 Mar 27 2:00s
2661 11:00 - VLAT 2011 Sep 13 0:00s # Decree 725?
2662 10:00 - YAKT 2014 Oct 26 2:00s
2666 # From Tim Parenti (2014-07-03):
2667 # Asia/Sakhalin covers...
2668 # 65 RU-SAK Sakhalin Oblast
2669 # ...with the exception of:
2670 # 65-11 **** Severo-Kurilsky District (North Kuril Islands)
2672 # The Zone name should be Asia/Yuzhno-Sakhalinsk, but that's too long.
2673 Zone Asia/Sakhalin 9:30:48 - LMT 1905 Aug 23
2674 9:00 - JCST 1937 Oct 1
2675 9:00 - JST 1945 Aug 25
2676 11:00 Russia SAK%sT 1991 Mar 31 2:00s # Sakhalin T
2677 10:00 Russia SAK%sT 1992 Jan 19 2:00s
2678 11:00 Russia SAK%sT 1997 Mar lastSun 2:00s
2679 10:00 Russia SAK%sT 2011 Mar 27 2:00s
2680 11:00 - SAKT 2014 Oct 26 2:00s
2684 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2009-11-29):
2685 # Asia/Magadan covers...
2686 # 49 RU-MAG Magadan Oblast
2688 # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
2689 # Magadan Oblast is moving from UTC+12 to UTC+10 on 2014-10-26; however,
2690 # several districts of Sakha Republic as well as Severo-Kurilsky District of
2691 # the Sakhalin Oblast (also known as the North Kuril Islands), represented
2692 # until now by Asia/Magadan, will instead move to UTC+11. These regions will
2693 # need their own zone.
2695 Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
2696 10:00 - MAGT 1930 Jun 21 # Magadan Time
2697 11:00 Russia MAG%sT 1991 Mar 31 2:00s
2698 10:00 Russia MAG%sT 1992 Jan 19 2:00s
2699 11:00 Russia MAG%sT 2011 Mar 27 2:00s
2700 12:00 - MAGT 2014 Oct 26 2:00s
2704 # From Tim Parenti (2014-07-06):
2705 # Asia/Srednekolymsk covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
2706 # 14-01 **** Abyysky District
2707 # 14-03 **** Allaikhovsky District
2708 # 14-08 **** Verkhnekolymsky District
2709 # 14-17 **** Momsky District
2710 # 14-20 **** Nizhnekolymsky District
2711 # 14-25 **** Srednekolymsky District
2713 # ...and parts of (65, RU-SAK) Sakhalin Oblast:
2714 # 65-11 **** Severo-Kurilsky District (North Kuril Islands)
2716 # From Tim Parenti (2014-07-02):
2717 # Oymyakonsky District of Sakha Republic (represented by Ust-Nera), along with
2718 # most of Sakhalin Oblast (represented by Sakhalin) will be moving to UTC+10 on
2719 # 2014-10-26 to stay aligned with VLAT/SAKT; however, Severo-Kurilsky District
2720 # of the Sakhalin Oblast (also known as the North Kuril Islands, represented by
2721 # Severo-Kurilsk) will remain on UTC+11.
2723 # From Tim Parenti (2014-07-06):
2724 # Assume North Kuril Islands have history like Magadan before 2011-03-27.
2725 # There is a decent chance this is wrong, in which case a new zone
2726 # Asia/Severo-Kurilsk would become necessary.
2728 # Srednekolymsk and Zyryanka are the most populous places amongst these
2729 # districts, but have very similar populations. In fact, Wikipedia currently
2730 # lists them both as having 3528 people, exactly 1668 males and 1860 females
2732 # http://en.wikipedia.org/w/?title=Srednekolymsky_District&oldid=603435276
2733 # http://en.wikipedia.org/w/?title=Verkhnekolymsky_District&oldid=594378493
2734 # Assume this is a mistake, albeit an amusing one.
2736 # Looking at censuses, the populations of the two municipalities seem to have
2737 # fluctuated recently. Zyryanka was more populous than Srednekolymsk in the
2738 # 1989 and 2002 censuses, but Srednekolymsk was more populous in the most
2739 # recent (2010) census, 3525 to 3170. (See pages 195 and 197 of
2740 # http://www.gks.ru/free_doc/new_site/perepis2010/croc/Documents/Vol1/pub-01-05.pdf
2741 # in Russian.) In addition, Srednekolymsk appears to be a much older
2742 # settlement and the population of Zyryanka seems to be declining.
2743 # Go with Srednekolymsk.
2745 # Since Magadan Oblast moves to UTC+10 on 2014-10-26, we cannot keep using MAGT
2746 # as the abbreviation. Use SRET instead.
2748 Zone Asia/Srednekolymsk 10:14:52 - LMT 1924 May 2
2749 10:00 - MAGT 1930 Jun 21 # Magadan Time
2750 11:00 Russia MAG%sT 1991 Mar 31 2:00s
2751 10:00 Russia MAG%sT 1992 Jan 19 2:00s
2752 11:00 Russia MAG%sT 2011 Mar 27 2:00s
2753 12:00 - MAGT 2014 Oct 26 2:00s
2754 11:00 - SRET # Srednekolymsk Time
2757 # From Tim Parenti (2014-07-03):
2758 # Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic:
2759 # 14-22 **** Oymyakonsky District
2761 # From Arthur David Olson (2012-05-09):
2762 # Ojmyakonskij [and the Kuril Islands] switched from
2763 # Magadan time to Vladivostok time in 2011.
2765 # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02):
2766 # It's unlikely that any of the Kuril Islands were involved in such a switch,
2767 # as the South and Middle Kurils have been on UTC+11 (SAKT) with the rest of
2768 # Sakhalin Oblast since at least 2011-09, and the North Kurils have been on
2769 # UTC+12 since at least then, too.
2771 Zone Asia/Ust-Nera 9:32:54 - LMT 1919 Dec 15
2772 8:00 - YAKT 1930 Jun 21 # Yakutsk Time
2773 9:00 Russia YAKT 1981 Apr 1
2774 11:00 Russia MAG%sT 1991 Mar 31 2:00s
2775 10:00 Russia MAG%sT 1992 Jan 19 2:00s
2776 11:00 Russia MAG%sT 2011 Mar 27 2:00s
2777 12:00 - MAGT 2011 Sep 13 0:00s # Decree 725?
2778 11:00 - VLAT 2014 Oct 26 2:00s
2782 # From Tim Parenti (2014-07-03), per Oscar van Vlijmen (2001-08-25):
2783 # Asia/Kamchatka covers...
2784 # 91 RU-KAM Kamchatka Krai
2786 # Note: Effective 2007-07-01, (41) Kamchatka Oblast and (82) Koryak
2787 # Autonomous Okrug merged to form (91, RU-KAM) Kamchatka Krai.
2789 # The Zone name should be Asia/Petropavlovsk-Kamchatski or perhaps
2790 # Asia/Petropavlovsk-Kamchatsky, but these are too long.
2791 Zone Asia/Kamchatka 10:34:36 - LMT 1922 Nov 10
2792 11:00 - PETT 1930 Jun 21 # P-K Time
2793 12:00 Russia PET%sT 1991 Mar 31 2:00s
2794 11:00 Russia PET%sT 1992 Jan 19 2:00s
2795 12:00 Russia PET%sT 2010 Mar 28 2:00s
2796 11:00 Russia PET%sT 2011 Mar 27 2:00s
2800 # From Tim Parenti (2014-07-03):
2801 # Asia/Anadyr covers...
2802 # 87 RU-CHU Chukotka Autonomous Okrug
2804 Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
2805 12:00 - ANAT 1930 Jun 21 # Anadyr Time
2806 13:00 Russia ANA%sT 1982 Apr 1 0:00s
2807 12:00 Russia ANA%sT 1991 Mar 31 2:00s
2808 11:00 Russia ANA%sT 1992 Jan 19 2:00s
2809 12:00 Russia ANA%sT 2010 Mar 28 2:00s
2810 11:00 Russia ANA%sT 2011 Mar 27 2:00s
2818 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2819 Zone Europe/Belgrade 1:22:00 - LMT 1884
2820 1:00 - CET 1941 Apr 18 23:00
2821 1:00 C-Eur CE%sT 1945
2822 1:00 - CET 1945 May 8 2:00s
2823 1:00 1:00 CEST 1945 Sep 16 2:00s
2824 # Metod Koželj reports that the legal date of
2825 # transition to EU rules was 1982-11-27, for all of Yugoslavia at the time.
2826 # Shanks & Pottenger don't give as much detail, so go with Koželj.
2827 1:00 - CET 1982 Nov 27
2829 Link Europe/Belgrade Europe/Ljubljana # Slovenia
2830 Link Europe/Belgrade Europe/Podgorica # Montenegro
2831 Link Europe/Belgrade Europe/Sarajevo # Bosnia and Herzegovina
2832 Link Europe/Belgrade Europe/Skopje # Macedonia
2833 Link Europe/Belgrade Europe/Zagreb # Croatia
2836 Link Europe/Prague Europe/Bratislava
2839 # See Europe/Belgrade.
2842 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2843 # For 1917-1919 Whitman gives Apr Sat>=1 - Oct Sat>=1;
2844 # go with Shanks & Pottenger.
2845 Rule Spain 1917 only - May 5 23:00s 1:00 S
2846 Rule Spain 1917 1919 - Oct 6 23:00s 0 -
2847 Rule Spain 1918 only - Apr 15 23:00s 1:00 S
2848 Rule Spain 1919 only - Apr 5 23:00s 1:00 S
2849 # Whitman gives 1921 Feb 28 - Oct 14; go with Shanks & Pottenger.
2850 Rule Spain 1924 only - Apr 16 23:00s 1:00 S
2851 # Whitman gives 1924 Oct 14; go with Shanks & Pottenger.
2852 Rule Spain 1924 only - Oct 4 23:00s 0 -
2853 Rule Spain 1926 only - Apr 17 23:00s 1:00 S
2854 # Whitman says no DST in 1929; go with Shanks & Pottenger.
2855 Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 -
2856 Rule Spain 1927 only - Apr 9 23:00s 1:00 S
2857 Rule Spain 1928 only - Apr 14 23:00s 1:00 S
2858 Rule Spain 1929 only - Apr 20 23:00s 1:00 S
2859 # Whitman gives 1937 Jun 16, 1938 Apr 16, 1940 Apr 13;
2860 # go with Shanks & Pottenger.
2861 Rule Spain 1937 only - May 22 23:00s 1:00 S
2862 Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
2863 Rule Spain 1938 only - Mar 22 23:00s 1:00 S
2864 Rule Spain 1939 only - Apr 15 23:00s 1:00 S
2865 Rule Spain 1940 only - Mar 16 23:00s 1:00 S
2866 # Whitman says no DST 1942-1945; go with Shanks & Pottenger.
2867 Rule Spain 1942 only - May 2 22:00s 2:00 M # Midsummer
2868 Rule Spain 1942 only - Sep 1 22:00s 1:00 S
2869 Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 M
2870 Rule Spain 1943 only - Oct 3 22:00s 1:00 S
2871 Rule Spain 1944 only - Oct 10 22:00s 1:00 S
2872 Rule Spain 1945 only - Sep 30 1:00 1:00 S
2873 Rule Spain 1946 only - Sep 30 0:00 0 -
2874 Rule Spain 1949 only - Apr 30 23:00 1:00 S
2875 Rule Spain 1949 only - Sep 30 1:00 0 -
2876 Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 S
2877 Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 -
2878 Rule Spain 1976 only - Mar 27 23:00 1:00 S
2879 Rule Spain 1976 1977 - Sep lastSun 1:00 0 -
2880 Rule Spain 1977 1978 - Apr 2 23:00 1:00 S
2881 Rule Spain 1978 only - Oct 1 1:00 0 -
2882 # The following rules are copied from Morocco from 1967 through 1978.
2883 Rule SpainAfrica 1967 only - Jun 3 12:00 1:00 S
2884 Rule SpainAfrica 1967 only - Oct 1 0:00 0 -
2885 Rule SpainAfrica 1974 only - Jun 24 0:00 1:00 S
2886 Rule SpainAfrica 1974 only - Sep 1 0:00 0 -
2887 Rule SpainAfrica 1976 1977 - May 1 0:00 1:00 S
2888 Rule SpainAfrica 1976 only - Aug 1 0:00 0 -
2889 Rule SpainAfrica 1977 only - Sep 28 0:00 0 -
2890 Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S
2891 Rule SpainAfrica 1978 only - Aug 4 0:00 0 -
2892 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2893 Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00s
2894 0:00 Spain WE%sT 1946 Sep 30
2895 1:00 Spain CE%sT 1979
2897 Zone Africa/Ceuta -0:21:16 - LMT 1901
2898 0:00 - WET 1918 May 6 23:00
2899 0:00 1:00 WEST 1918 Oct 7 23:00
2901 0:00 Spain WE%sT 1929
2902 0:00 SpainAfrica WE%sT 1984 Mar 16
2905 Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
2906 -1:00 - CANT 1946 Sep 30 1:00 # Canaries T
2907 0:00 - WET 1980 Apr 6 0:00s
2908 0:00 1:00 WEST 1980 Sep 28 0:00s
2910 # IATA SSIM (1996-09) says the Canaries switch at 2:00u, not 1:00u.
2911 # Ignore this for now, as the Canaries are part of the EU.
2915 # From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger:
2917 # The law "Svensk författningssamling 1878, no 14" about standard time in 1879:
2918 # From the beginning of 1879 (that is 01-01 00:00) the time for all
2919 # places in the country is "the mean solar time for the meridian at
2920 # three degrees, or twelve minutes of time, to the west of the
2921 # meridian of the Observatory of Stockholm". The law is dated 1878-05-31.
2923 # The observatory at that time had the meridian 18 degrees 03' 30"
2924 # eastern longitude = 01:12:14 in time. Less 12 minutes gives the
2925 # national standard time as 01:00:14 ahead of GMT....
2927 # About the beginning of CET in Sweden. The lawtext ("Svensk
2928 # författningssamling 1899, no 44") states, that "from the beginning
2929 # of 1900... ... the same as the mean solar time for the meridian at
2930 # the distance of one hour of time from the meridian of the English
2931 # observatory at Greenwich, or at 12 minutes 14 seconds to the west
2932 # from the meridian of the Observatory of Stockholm". The law is dated
2933 # 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time
2934 # in Sweden is 01:00:00 ahead of GMT.
2936 # 1916: The lawtext ("Svensk författningssamling 1916, no 124") states
2937 # that "1916-05-15 is considered to begin one hour earlier". It is
2938 # pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00....
2939 # Further the law says, that "1916-09-30 is considered to end one hour later".
2941 # The laws regulating [DST] are available on the site of the Swedish
2942 # Parliament beginning with 1985 - the laws regulating 1980/1984 are
2943 # not available on the site (to my knowledge they are only available
2944 # in Swedish): <http://www.riksdagen.se/english/work/sfst.asp> (type
2945 # "sommartid" without the quotes in the field "Fritext" and then click
2950 # I have now found a newspaper stating that at 1916-10-01 01:00
2951 # summertime the church-clocks etc were set back one hour to show
2952 # 1916-10-01 00:00 standard time. The article also reports that some
2953 # people thought the switch to standard time would take place already
2954 # at 1916-10-01 00:00 summer time, but they had to wait for another
2955 # hour before the event took place.
2957 # Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left.
2959 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2960 Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1
2961 1:00:14 - SET 1900 Jan 1 # Swedish Time
2962 1:00 - CET 1916 May 14 23:00
2963 1:00 1:00 CEST 1916 Oct 1 1:00
2969 # By the end of the 18th century clocks and watches became commonplace
2970 # and their performance improved enormously. Communities began to keep
2971 # mean time in preference to apparent time - Geneva from 1780 ....
2972 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2973 # From Whitman (who writes "Midnight?"):
2974 # Rule Swiss 1940 only - Nov 2 0:00 1:00 S
2975 # Rule Swiss 1940 only - Dec 31 0:00 0 -
2976 # From Shanks & Pottenger:
2977 # Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
2978 # Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 -
2980 # From Alois Treindl (2008-12-17):
2981 # I have researched the DST usage in Switzerland during the 1940ies.
2983 # As I wrote in an earlier message, I suspected the current tzdata values
2984 # to be wrong. This is now verified.
2986 # I have found copies of the original ruling by the Swiss Federal
2987 # government, in 'Eidgenössische Gesetzessammlung 1941 and 1942' (Swiss
2988 # federal law collection)...
2990 # DST began on Monday 5 May 1941, 1:00 am by shifting the clocks to 2:00 am
2991 # DST ended on Monday 6 Oct 1941, 2:00 am by shifting the clocks to 1:00 am.
2993 # DST began on Monday, 4 May 1942 at 01:00 am
2994 # DST ended on Monday, 5 Oct 1942 at 02:00 am
2996 # There was no DST in 1940, I have checked the law collection carefully.
2997 # It is also indicated by the fact that the 1942 entry in the law
2998 # collection points back to 1941 as a reference, but no reference to any
2999 # other years are made.
3001 # Newspaper articles I have read in the archives on 6 May 1941 reported
3002 # about the introduction of DST (Sommerzeit in German) during the previous
3003 # night as an absolute novelty, because this was the first time that such
3004 # a thing had happened in Switzerland.
3006 # I have also checked 1916, because one book source (Gabriel, Traité de
3007 # l'heure dans le monde) claims that Switzerland had DST in 1916. This is
3008 # false, no official document could be found. Probably Gabriel got misled
3009 # by references to Germany, which introduced DST in 1916 for the first time.
3011 # The tzdata rules for Switzerland must be changed to:
3012 # Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
3013 # Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
3015 # The 1940 rules must be deleted.
3017 # One further detail for Switzerland, which is probably out of scope for
3018 # most users of tzdata: The [Europe/Zurich zone] ...
3019 # describes all of Switzerland correctly, with the exception of
3020 # the Canton de Genève (Geneva, Genf). Between 1848 and 1894 Geneva did not
3021 # follow Bern Mean Time but kept its own local mean time.
3022 # To represent this, an extra zone would be needed.
3024 # From Alois Treindl (2013-09-11):
3025 # The Federal regulations say
3026 # http://www.admin.ch/opc/de/classified-compilation/20071096/index.html
3027 # ... the meridian for Bern mean time ... is 7 degrees 26' 22.50".
3028 # Expressed in time, it is 0h29m45.5s.
3030 # From Pierre-Yves Berger (2013-09-11):
3031 # the "Circulaire du conseil fédéral" (December 11 1893)
3032 # http://www.amtsdruckschriften.bar.admin.ch/viewOrigDoc.do?id=10071353
3033 # clearly states that the [1894-06-01] change should be done at midnight
3034 # but if no one is present after 11 at night, could be postponed until one
3035 # hour before the beginning of service.
3037 # From Paul Eggert (2013-09-11):
3038 # Round BMT to the nearest even second, 0:29:46.
3040 # We can find no reliable source for Shanks's assertion that all of Switzerland
3041 # except Geneva switched to Bern Mean Time at 00:00 on 1848-09-12. This book:
3043 # Jakob Messerli. Gleichmässig, pünktlich, schnell. Zeiteinteilung und
3044 # Zeitgebrauch in der Schweiz im 19. Jahrhundert. Chronos, Zurich 1995,
3045 # ISBN 3-905311-68-2, OCLC 717570797.
3047 # suggests that the transition was more gradual, and that the Swiss did not
3048 # agree about civil time during the transition. The timekeeping it gives the
3049 # most detail for is postal and telegraph time: here, federal legislation (the
3050 # "Bundesgesetz über die Erstellung von elektrischen Telegraphen") passed on
3051 # 1851-11-23, and an official implementation notice was published 1853-07-16
3052 # (Bundesblatt 1853, Bd. II, S. 859). On p 72 Messerli writes that in
3053 # practice since July 1853 Bernese time was used in "all postal and telegraph
3054 # offices in Switzerland from Geneva to St. Gallen and Basel to Chiasso"
3055 # (Google translation). For now, model this transition as occurring on
3056 # 1853-07-16, though it probably occurred at some other date in Zurich, and
3057 # legal civil time probably changed at still some other transition date.
3059 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3060 Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
3061 Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
3062 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3063 Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment.
3064 0:29:46 - BMT 1894 Jun # Bern Mean Time
3065 1:00 Swiss CE%sT 1981
3070 # From Amar Devegowda (2007-01-03):
3071 # The time zone rules for Istanbul, Turkey have not been changed for years now.
3072 # ... The latest rules are available at:
3073 # http://www.timeanddate.com/worldclock/timezone.html?n=107
3074 # From Steffen Thorsen (2007-01-03):
3075 # I have been able to find press records back to 1996 which all say that
3076 # DST started 01:00 local time and end at 02:00 local time. I am not sure
3077 # what happened before that. One example for each year from 1996 to 2001:
3078 # http://newspot.byegm.gov.tr/arsiv/1996/21/N4.htm
3079 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING97/03/97X03X25.TXT
3080 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING98/03/98X03X02.HTM
3081 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING99/10/99X10X26.HTM#%2016
3082 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2000/03/00X03X06.HTM#%2021
3083 # http://www.byegm.gov.tr/YAYINLARIMIZ/CHR/ING2001/03/23x03x01.HTM#%2027
3084 # From Paul Eggert (2007-01-03):
3085 # Prefer the above source to Shanks & Pottenger for time stamps after 1990.
3087 # From Steffen Thorsen (2007-03-09):
3088 # Starting 2007 though, it seems that they are adopting EU's 1:00 UTC
3089 # start/end time, according to the following page (2007-03-07):
3090 # http://www.ntvmsnbc.com/news/402029.asp
3091 # The official document is located here - it is in Turkish...:
3092 # http://rega.basbakanlik.gov.tr/eskiler/2007/03/20070307-7.htm
3093 # I was able to locate the following seemingly official document
3094 # (on a non-government server though) describing dates between 2002 and 2006:
3095 # http://www.alomaliye.com/bkk_2002_3769.htm
3097 # From Gökdeniz Karadağ (2011-03-10):
3098 # According to the articles linked below, Turkey will change into summer
3099 # time zone (GMT+3) on March 28, 2011 at 3:00 a.m. instead of March 27.
3100 # This change is due to a nationwide exam on 27th.
3101 # http://www.worldbulletin.net/?aType=haber&ArticleID=70872
3103 # http://www.hurriyet.com.tr/ekonomi/17230464.asp?gid=373
3105 # From Faruk Pasin (2014-02-14):
3106 # The DST for Turkey has been changed for this year because of the
3107 # Turkish Local election....
3108 # http://www.sabah.com.tr/Ekonomi/2014/02/12/yaz-saatinde-onemli-degisiklik
3109 # ... so Turkey will move clocks forward one hour on March 31 at 3:00 a.m.
3110 # From Randal L. Schwartz (2014-04-15):
3111 # Having landed on a flight from the states to Istanbul (via AMS) on March 31,
3112 # I can tell you that NOBODY (even the airlines) respected this timezone DST
3113 # change delay. Maybe the word just didn't get out in time.
3114 # From Paul Eggert (2014-06-15):
3115 # The press reported massive confusion, as election officials obeyed the rule
3116 # change but cell phones (and airline baggage systems) did not. See:
3117 # Kostidis M. Eventful elections in Turkey. Balkan News Agency
3118 # http://www.balkaneu.com/eventful-elections-turkey/ 2014-03-30.
3119 # I guess the best we can do is document the official time.
3121 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
3122 Rule Turkey 1916 only - May 1 0:00 1:00 S
3123 Rule Turkey 1916 only - Oct 1 0:00 0 -
3124 Rule Turkey 1920 only - Mar 28 0:00 1:00 S
3125 Rule Turkey 1920 only - Oct 25 0:00 0 -
3126 Rule Turkey 1921 only - Apr 3 0:00 1:00 S
3127 Rule Turkey 1921 only - Oct 3 0:00 0 -
3128 Rule Turkey 1922 only - Mar 26 0:00 1:00 S
3129 Rule Turkey 1922 only - Oct 8 0:00 0 -
3130 # Whitman gives 1923 Apr 28 - Sep 16 and no DST in 1924-1925;
3131 # go with Shanks & Pottenger.
3132 Rule Turkey 1924 only - May 13 0:00 1:00 S
3133 Rule Turkey 1924 1925 - Oct 1 0:00 0 -
3134 Rule Turkey 1925 only - May 1 0:00 1:00 S
3135 Rule Turkey 1940 only - Jun 30 0:00 1:00 S
3136 Rule Turkey 1940 only - Oct 5 0:00 0 -
3137 Rule Turkey 1940 only - Dec 1 0:00 1:00 S
3138 Rule Turkey 1941 only - Sep 21 0:00 0 -
3139 Rule Turkey 1942 only - Apr 1 0:00 1:00 S
3140 # Whitman omits the next two transition and gives 1945 Oct 1;
3141 # go with Shanks & Pottenger.
3142 Rule Turkey 1942 only - Nov 1 0:00 0 -
3143 Rule Turkey 1945 only - Apr 2 0:00 1:00 S
3144 Rule Turkey 1945 only - Oct 8 0:00 0 -
3145 Rule Turkey 1946 only - Jun 1 0:00 1:00 S
3146 Rule Turkey 1946 only - Oct 1 0:00 0 -
3147 Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 S
3148 Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 -
3149 Rule Turkey 1949 only - Apr 10 0:00 1:00 S
3150 Rule Turkey 1950 only - Apr 19 0:00 1:00 S
3151 Rule Turkey 1951 only - Apr 22 0:00 1:00 S
3152 Rule Turkey 1951 only - Oct 8 0:00 0 -
3153 Rule Turkey 1962 only - Jul 15 0:00 1:00 S
3154 Rule Turkey 1962 only - Oct 8 0:00 0 -
3155 Rule Turkey 1964 only - May 15 0:00 1:00 S
3156 Rule Turkey 1964 only - Oct 1 0:00 0 -
3157 Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 S
3158 Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 -
3159 Rule Turkey 1973 only - Jun 3 1:00 1:00 S
3160 Rule Turkey 1973 only - Nov 4 3:00 0 -
3161 Rule Turkey 1974 only - Mar 31 2:00 1:00 S
3162 Rule Turkey 1974 only - Nov 3 5:00 0 -
3163 Rule Turkey 1975 only - Mar 30 0:00 1:00 S
3164 Rule Turkey 1975 1976 - Oct lastSun 0:00 0 -
3165 Rule Turkey 1976 only - Jun 1 0:00 1:00 S
3166 Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 S
3167 Rule Turkey 1977 only - Oct 16 0:00 0 -
3168 Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 S
3169 Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 -
3170 Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 S
3171 Rule Turkey 1983 only - Jul 31 0:00 1:00 S
3172 Rule Turkey 1983 only - Oct 2 0:00 0 -
3173 Rule Turkey 1985 only - Apr 20 0:00 1:00 S
3174 Rule Turkey 1985 only - Sep 28 0:00 0 -
3175 Rule Turkey 1986 1990 - Mar lastSun 2:00s 1:00 S
3176 Rule Turkey 1986 1990 - Sep lastSun 2:00s 0 -
3177 Rule Turkey 1991 2006 - Mar lastSun 1:00s 1:00 S
3178 Rule Turkey 1991 1995 - Sep lastSun 1:00s 0 -
3179 Rule Turkey 1996 2006 - Oct lastSun 1:00s 0 -
3180 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3181 Zone Europe/Istanbul 1:55:52 - LMT 1880
3182 1:56:56 - IMT 1910 Oct # Istanbul Mean Time?
3183 2:00 Turkey EE%sT 1978 Oct 15
3184 3:00 Turkey TR%sT 1985 Apr 20 # Turkey Time
3185 2:00 Turkey EE%sT 2007
3186 2:00 EU EE%sT 2011 Mar 27 1:00u
3187 2:00 - EET 2011 Mar 28 1:00u
3188 2:00 EU EE%sT 2014 Mar 30 1:00u
3189 2:00 - EET 2014 Mar 31 1:00u
3191 Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
3195 # From Igor Karpov, who works for the Ukrainian Ministry of Justice,
3196 # via Garrett Wollman (2003-01-27):
3197 # BTW, I've found the official document on this matter. It's government
3198 # regulations number 509, May 13, 1996. In my poor translation it says:
3199 # "Time in Ukraine is set to second timezone (Kiev time). Each last Sunday
3200 # of March at 3am the time is changing to 4am and each last Sunday of
3201 # October the time at 4am is changing to 3am"
3203 # From Alexander Krivenyshev (2011-09-20):
3204 # On September 20, 2011 the deputies of the Verkhovna Rada agreed to
3205 # abolish the transfer clock to winter time.
3207 # Bill number 8330 of MP from the Party of Regions Oleg Nadoshi got
3208 # approval from 266 deputies.
3210 # Ukraine abolishes transfer back to the winter time (in Russian)
3211 # http://news.mail.ru/politics/6861560/
3213 # The Ukrainians will no longer change the clock (in Russian)
3214 # http://www.segodnya.ua/news/14290482.html
3216 # Deputies cancelled the winter time (in Russian)
3217 # http://www.pravda.com.ua/rus/news/2011/09/20/6600616/
3219 # From Philip Pizzey (2011-10-18):
3220 # Today my Ukrainian colleagues have informed me that the
3221 # Ukrainian parliament have decided that they will go to winter
3222 # time this year after all.
3224 # From Udo Schwedt (2011-10-18):
3225 # As far as I understand, the recent change to the Ukrainian time zone
3226 # (Europe/Kiev) to introduce permanent daylight saving time (similar
3227 # to Russia) was reverted today:
3228 # http://portal.rada.gov.ua/rada/control/en/publish/article/info_left?art_id=287324&cat_id=105995
3230 # Also reported by Alexander Bokovoy (2011-10-18) who also noted:
3231 # The law documents themselves are at
3232 # http://w1.c1.rada.gov.ua/pls/zweb_n/webproc4_1?id=&pf3511=41484
3234 # From Vladimir in Moscow via Alois Treindl re Kiev time 1991/2 (2014-02-28):
3235 # First in Ukraine they changed Time zone from UTC+3 to UTC+2 with DST:
3236 # 03 25 1990 02:00 -03.00 1 Time Zone 3 with DST
3237 # 07 01 1990 02:00 -02.00 1 Time Zone 2 with DST
3238 # * Ukrainian Government's Resolution of 18.06.1990, No. 134.
3239 # http://search.ligazakon.ua/l_doc2.nsf/link1/T001500.html
3241 # They did not end DST in September, 1990 (according to the law,
3242 # "summer time" was still in action):
3243 # 09 30 1990 03:00 -02.00 1 Time Zone 2 with DST
3244 # * Ukrainian Government's Resolution of 21.09.1990, No. 272.
3245 # http://search.ligazakon.ua/l_doc2.nsf/link1/KP900272.html
3247 # Again no change in March, 1991 ("summer time" in action):
3248 # 03 31 1991 02:00 -02.00 1 Time Zone 2 with DST
3250 # DST ended in September 1991 ("summer time" ended):
3251 # 09 29 1991 03:00 -02.00 0 Time Zone 2, no DST
3252 # * Ukrainian Government's Resolution of 25.09.1991, No. 225.
3253 # http://www.uazakon.com/documents/date_21/pg_iwgdoc.htm
3254 # This is an answer.
3256 # Since 1992 they had normal DST procedure:
3257 # 03 29 1992 02:00 -02.00 1 DST started
3258 # 09 27 1992 03:00 -02.00 0 DST ended
3259 # * Ukrainian Government's Resolution of 20.03.1992, No. 139.
3260 # http://www.uazakon.com/documents/date_8u/pg_grcasa.htm
3262 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
3263 # Most of Ukraine since 1970 has been like Kiev.
3264 # "Kyiv" is the transliteration of the Ukrainian name, but
3265 # "Kiev" is more common in English.
3266 Zone Europe/Kiev 2:02:04 - LMT 1880
3267 2:02:04 - KMT 1924 May 2 # Kiev Mean Time
3268 2:00 - EET 1930 Jun 21
3269 3:00 - MSK 1941 Sep 20
3270 1:00 C-Eur CE%sT 1943 Nov 6
3271 3:00 Russia MSK/MSD 1990 Jul 1 2:00
3272 2:00 1:00 EEST 1991 Sep 29 3:00
3273 2:00 E-Eur EE%sT 1995
3275 # Ruthenia used CET 1990/1991.
3276 # "Uzhhorod" is the transliteration of the Rusyn/Ukrainian pronunciation, but
3277 # "Uzhgorod" is more common in English.
3278 Zone Europe/Uzhgorod 1:29:12 - LMT 1890 Oct
3280 1:00 C-Eur CE%sT 1944 Oct
3281 1:00 1:00 CEST 1944 Oct 26
3282 1:00 - CET 1945 Jun 29
3283 3:00 Russia MSK/MSD 1990
3284 3:00 - MSK 1990 Jul 1 2:00
3285 1:00 - CET 1991 Mar 31 3:00
3287 2:00 E-Eur EE%sT 1995
3289 # Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991.
3290 # "Zaporizhia" is the transliteration of the Ukrainian name, but
3291 # "Zaporozh'ye" is more common in English. Use the common English
3292 # spelling, except omit the apostrophe as it is not allowed in
3293 # portable Posix file names.
3294 Zone Europe/Zaporozhye 2:20:40 - LMT 1880
3295 2:20 - CUT 1924 May 2 # Central Ukraine T
3296 2:00 - EET 1930 Jun 21
3297 3:00 - MSK 1941 Aug 25
3298 1:00 C-Eur CE%sT 1943 Oct 25
3299 3:00 Russia MSK/MSD 1991 Mar 31 2:00
3300 2:00 E-Eur EE%sT 1995
3306 ###############################################################################
3308 # One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
3309 # the last Sunday in March to the last Sunday in September in 1986.
3310 # The source shows Romania changing a day later than everybody else.
3312 # According to Bernard Sieloff's source, Poland is in the MET time zone but
3313 # uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules.
3314 # Bernard Sieloff's source claims Romania switches on the same day, but at
3315 # 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey
3316 # switches on the same day, but switches on at 01:00 standard time
3317 # and off at 00:00 standard time (i.e., 01:00 DST)
3320 # Date: Wed, 28 Jan 87 16:56:27 -0100
3324 # ...the European time rules are...standardized since 1981, when
3325 # most European countries started DST. Before that year, only
3326 # a few countries (UK, France, Italy) had DST, each according
3327 # to own national rules. In 1981, however, DST started on
3328 # 'Apr firstSun', and not on 'Mar lastSun' as in the following
3330 # But also since 1981 there are some more national exceptions
3331 # than listed in 'europe': Switzerland, for example, joined DST
3332 # one year later, Denmark ended DST on 'Oct 1' instead of 'Sep
3333 # lastSun' in 1981 - I don't know how they handle now.
3335 # Finally, DST ist always from 'Apr 1' to 'Oct 1' in the
3336 # Soviet Union (as far as I know).
3338 # Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG,
3339 # 4002 Basle, Switzerland
3343 # Date: Wed, 4 Feb 87 22:35:22 +0100
3344 # From: Dik T. Winter
3347 # The information from Tom Hofmann is (as far as I know) not entirely correct.
3348 # After a request from chongo at amdahl I tried to retrieve all information
3349 # about DST in Europe. I was able to find all from about 1969.
3351 # ...standardization on DST in Europe started in about 1977 with switches on
3352 # first Sunday in April and last Sunday in September...
3353 # In 1981 UK joined Europe insofar that
3354 # the starting day for both shifted to last Sunday in March. And from 1982
3355 # the whole of Europe used DST, with switch dates April 1 and October 1 in
3356 # the Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch
3359 # It should also be remembered that time-zones are not constants; e.g.
3360 # Portugal switched in 1976 from MET (or CET) to WET with DST...
3361 # Note also that though there were rules for switch dates not
3362 # all countries abided to these dates, and many individual deviations
3363 # occurred, though not since 1982 I believe. Another note: it is always
3364 # assumed that DST is 1 hour ahead of normal time, this need not be the
3365 # case; at least in the Netherlands there have been times when DST was 2 hours
3366 # in advance of normal time.
3369 # dik t. winter, cwi, amsterdam, nederland
3372 # From Bob Devine (1988-01-28):
3374 # Greece: Last Sunday in April to last Sunday in September (iffy on dates).
3375 # Since 1978. Change at midnight.
3377 # Monaco: has same DST as France.
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