3 # This file is in the public domain, so clarified as of
4 # 2009-05-17 by Arthur David Olson.
6 # This data is by no means authoritative; if you think you know better,
7 # go ahead and edit the file (and please send any changes to
8 # tz@elsie.nci.nih.gov for general use in the future).
10 # From Paul Eggert (2006-03-22):
12 # A good source for time zone historical data outside the U.S. is
13 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
14 # San Diego: ACS Publications, Inc. (2003).
16 # Gwillim Law writes that a good source
17 # for recent time zone data is the International Air Transport
18 # Association's Standard Schedules Information Manual (IATA SSIM),
19 # published semiannually. Law sent in several helpful summaries
20 # of the IATA's data after 1990.
22 # Except where otherwise noted, Shanks & Pottenger is the source for
23 # entries through 1990, and IATA SSIM is the source for entries afterwards.
25 # Another source occasionally used is Edward W. Whitman, World Time Differences,
26 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
27 # I found in the UCLA library.
29 # A reliable and entertaining source about time zones is
30 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
32 # I invented the abbreviations marked `*' in the following table;
33 # the rest are from earlier versions of this file, or from other sources.
34 # Corrections are welcome!
37 # 2:00 EET EEST Eastern European Time
39 # 3:00 AST ADT Arabia*
44 # 7:00 WIT west Indonesia
45 # 8:00 CIT central Indonesia
47 # 9:00 CJT Central Japanese Time (1896/1937)*
48 # 9:00 EIT east Indonesia
51 # 9:30 CST (Australian) Central Standard Time
53 # See the `europe' file for Russia and Turkey in Asia.
56 # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as
57 # additional information from Tom Yap, Sun Microsystems Intercontinental
58 # Technical Support (including a page from the Official Airline Guide -
59 # Worldwide Edition). The names for time zones are guesses.
61 ###############################################################################
63 # These rules are stolen from the `europe' file.
64 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
65 Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S
66 Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 -
67 Rule EUAsia 1996 max - Oct lastSun 1:00u 0 -
68 Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 S
69 Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 -
70 Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 -
71 Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 S
72 Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 -
73 Rule RussiaAsia 1984 1991 - Sep lastSun 2:00s 0 -
74 Rule RussiaAsia 1985 1991 - Mar lastSun 2:00s 1:00 S
75 Rule RussiaAsia 1992 only - Mar lastSat 23:00 1:00 S
76 Rule RussiaAsia 1992 only - Sep lastSat 23:00 0 -
77 Rule RussiaAsia 1993 max - Mar lastSun 2:00s 1:00 S
78 Rule RussiaAsia 1993 1995 - Sep lastSun 2:00s 0 -
79 Rule RussiaAsia 1996 max - Oct lastSun 2:00s 0 -
82 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
83 Zone Asia/Kabul 4:36:48 - LMT 1890
88 # From Paul Eggert (2006-03-22):
89 # Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST)
90 # in spring 1991, then to 4:00 with no DST in fall 1995, then
91 # readopting Russian DST in 1997. Go with Shanks & Pottenger, even
92 # when they disagree with others. Edgar Der-Danieliantz
93 # reported (1996-05-04) that Yerevan probably wouldn't use DST
94 # in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that
95 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
96 # but started switching at 3:00s in 1998.
97 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
98 Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2
99 3:00 - YERT 1957 Mar # Yerevan Time
100 4:00 RussiaAsia YER%sT 1991 Mar 31 2:00s
101 3:00 1:00 YERST 1991 Sep 23 # independence
102 3:00 RussiaAsia AM%sT 1995 Sep 24 2:00s
104 4:00 RussiaAsia AM%sT
107 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
108 # According to the resolution of Cabinet of Ministers, 1997
109 # Resolution available at: http://aif.az/docs/daylight_res.pdf
110 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
111 Rule Azer 1997 max - Mar lastSun 4:00 1:00 S
112 Rule Azer 1997 max - Oct lastSun 5:00 0 -
113 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
114 Zone Asia/Baku 3:19:24 - LMT 1924 May 2
115 3:00 - BAKT 1957 Mar # Baku Time
116 4:00 RussiaAsia BAK%sT 1991 Mar 31 2:00s
117 3:00 1:00 BAKST 1991 Aug 30 # independence
118 3:00 RussiaAsia AZ%sT 1992 Sep lastSat 23:00
119 4:00 - AZT 1996 # Azerbaijan time
120 4:00 EUAsia AZ%sT 1997
124 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
125 Zone Asia/Bahrain 3:22:20 - LMT 1920 # Al Manamah
130 # From Alexander Krivenyshev (2009-05-13):
131 # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
132 # Daylight Saving Time from June 16 to Sept 30
134 # Bangladesh to introduce daylight saving time likely from June 16
135 # <a href="http://www.asiantribune.com/?q=node/17288">
136 # http://www.asiantribune.com/?q=node/17288
139 # <a href="http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html">
140 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html
143 # "... Bangladesh government has decided to switch daylight saving time from
145 # 16 till September 30 in a bid to ensure maximum use of daylight to cope with
146 # crippling power crisis. "
148 # The switch will remain in effect from June 16 to Sept 30 (2009) but if
149 # implemented the next year, it will come in force from April 1, 2010
151 # From Steffen Thorsen (2009-06-02):
152 # They have finally decided now, but changed the start date to midnight between
153 # the 19th and 20th, and they have not set the end date yet.
156 # <a href="http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601">
157 # http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601
159 # <a href="http://bdnews24.com/details.php?id=85889&cid=2">
160 # http://bdnews24.com/details.php?id=85889&cid=2
164 # <a href="http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html">
165 # http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html
168 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
169 Rule Bang 2009 only - Jan 1 0:00 0 -
170 Rule Bang 2009 only - Jun 20 0:00 1:00 S
172 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
173 Zone Asia/Dhaka 6:01:40 - LMT 1890
174 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
175 6:30 - BURT 1942 May 15 # Burma Time
177 6:30 - BURT 1951 Sep 30
178 6:00 - DACT 1971 Mar 26 # Dacca Time
179 6:00 - BDT 2009 # Bangladesh Time
183 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
184 Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu
186 6:00 - BTT # Bhutan Time
188 # British Indian Ocean Territory
189 # Whitman and the 1995 CIA time zone map say 5:00, but the
190 # 1997 and later maps say 6:00. Assume the switch occurred in 1996.
191 # We have no information as to when standard time was introduced;
192 # assume it occurred in 1907, the same year as Mauritius (which
193 # then contained the Chagos Archipelago).
194 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
195 Zone Indian/Chagos 4:49:40 - LMT 1907
196 5:00 - IOT 1996 # BIOT Time
200 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
201 Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan
206 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
207 Zone Asia/Rangoon 6:24:40 - LMT 1880 # or Yangon
208 6:24:36 - RMT 1920 # Rangoon Mean Time?
209 6:30 - BURT 1942 May # Burma Time
210 9:00 - JST 1945 May 3
211 6:30 - MMT # Myanmar Time
214 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
215 Zone Asia/Phnom_Penh 6:59:40 - LMT 1906 Jun 9
216 7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
224 # People's Republic of China. Yes, they really have only one time zone.
226 # From Bob Devine (1988-01-28):
227 # No they don't. See TIME mag, 1986-02-17 p.52. Even though
228 # China is across 4 physical time zones, before Feb 1, 1986 only the
229 # Peking (Bejing) time zone was recognized. Since that date, China
230 # has two of 'em -- Peking's and Urumqi (named after the capital of
231 # the Xinjiang Uyghur Autonomous Region). I don't know about DST for it.
233 # . . .I just deleted the DST table and this editor makes it too
234 # painful to suck in another copy.. So, here is what I have for
235 # DST start/end dates for Peking's time zone (info from AP):
237 # 1986 May 4 - Sept 14
238 # 1987 mid-April - ??
240 # From U. S. Naval Observatory (1989-01-19):
241 # CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN
242 # CHINA 9 H AHEAD OF UTC APR 17 - SEP 10
244 # From Paul Eggert (2006-03-22):
245 # Shanks & Pottenger write that China (except for Hong Kong and Macau)
246 # has had a single time zone since 1980 May 1, observing summer DST
247 # from 1986 through 1991; this contradicts Devine's
248 # note about Time magazine, though apparently _something_ happened in 1986.
249 # Go with Shanks & Pottenger for now. I made up names for the other
250 # pre-1980 time zones.
252 # From Shanks & Pottenger:
253 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
254 Rule Shang 1940 only - Jun 3 0:00 1:00 D
255 Rule Shang 1940 1941 - Oct 1 0:00 0 S
256 Rule Shang 1941 only - Mar 16 0:00 1:00 D
257 Rule PRC 1986 only - May 4 0:00 1:00 D
258 Rule PRC 1986 1991 - Sep Sun>=11 0:00 0 S
259 Rule PRC 1987 1991 - Apr Sun>=10 0:00 1:00 D
261 # From Anthony Fok (2001-12-20):
262 # BTW, I did some research on-line and found some info regarding these five
263 # historic timezones from some Taiwan websites. And yes, there are official
264 # Chinese names for these locales (before 1949).
266 # From Jesper Norgaard Welen (2006-07-14):
267 # I have investigated the timezones around 1970 on the
268 # http://www.astro.com/atlas site [with provinces and county
269 # boundaries summarized below].... A few other exceptions were two
270 # counties on the Sichuan side of the Xizang-Sichuan border,
271 # counties Dege and Baiyu which lies on the Sichuan side and are
272 # therefore supposed to be GMT+7, Xizang region being GMT+6, but Dege
273 # county is GMT+8 according to astro.com while Baiyu county is GMT+6
274 # (could be true), for the moment I am assuming that those two
275 # counties are mistakes in the astro.com data.
277 # From Paul Eggert (2008-02-11):
278 # I just now checked Google News for western news sources that talk
279 # about China's single time zone, and couldn't find anything before 1986
280 # talking about China being in one time zone. (That article was: Jim
281 # Mann, "A clumsy embrace for another western custom: China on daylight
282 # time--sort of", Los Angeles Times, 1986-05-05. By the way, this
283 # article confirms the tz database's data claiming that China began
284 # observing daylight saving time in 1986.
286 # From Thomas S. Mullaney (2008-02-11):
287 # I think you're combining two subjects that need to treated
288 # separately: daylight savings (which, you're correct, wasn't
289 # implemented until the 1980s) and the unified time zone centered near
290 # Beijing (which was implemented in 1949). Briefly, there was also a
291 # "Lhasa Time" in Tibet and "Urumqi Time" in Xinjiang. The first was
292 # ceased, and the second eventually recognized (again, in the 1980s).
294 # From Paul Eggert (2008-06-30):
295 # There seems to be a good chance China switched to a single time zone in 1949
296 # rather than in 1980 as Shanks & Pottenger have it, but we don't have a
297 # reliable documentary source saying so yet, so for now we still go with
298 # Shanks & Pottenger.
300 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
301 # Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
302 # Heilongjiang (except Mohe county), Jilin
303 Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin
304 8:30 - CHAT 1932 Mar # Changbai Time
309 # Zhongyuan Time ("Central plain Time")
311 Zone Asia/Shanghai 8:05:52 - LMT 1928
314 # Long-shu Time (probably due to Long and Shu being two names of that area)
315 # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
316 # most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
317 # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
318 # Yangchun, Yangjiang, Yu'nan, and Yunfu.
319 Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
320 7:00 - LONT 1980 May # Long-shu Time
322 # Xin-zang Time ("Xinjiang-Tibet Time")
323 # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai;
324 # the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang,
325 # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi;
326 # east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi;
327 # east Xinjiang, including Urumqi, Turpan, Karamay, Korla, Minfeng, Jinghe,
328 # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin,
329 # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami,
330 # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan.
331 Zone Asia/Urumqi 5:50:20 - LMT 1928 # or Urumchi
332 6:00 - URUT 1980 May # Urumqi Time
335 # West Tibet, including Pulan, Aheqi, Shufu, Shule;
336 # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke,
337 # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding,
339 Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar
340 5:30 - KAST 1940 # Kashgar Time
344 # Hong Kong (Xianggang)
345 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
346 Rule HK 1946 only - Apr 20 3:30 1:00 S
347 Rule HK 1946 only - Dec 1 3:30 0 -
348 Rule HK 1947 only - Apr 13 3:30 1:00 S
349 Rule HK 1947 only - Dec 30 3:30 0 -
350 Rule HK 1948 only - May 2 3:30 1:00 S
351 Rule HK 1948 1952 - Oct lastSun 3:30 0 -
352 Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S
353 Rule HK 1953 only - Nov 1 3:30 0 -
354 Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S
355 Rule HK 1954 only - Oct 31 3:30 0 -
356 Rule HK 1955 1964 - Nov Sun>=1 3:30 0 -
357 Rule HK 1965 1977 - Apr Sun>=16 3:30 1:00 S
358 Rule HK 1965 1977 - Oct Sun>=16 3:30 0 -
359 Rule HK 1979 1980 - May Sun>=8 3:30 1:00 S
360 Rule HK 1979 1980 - Oct Sun>=16 3:30 0 -
361 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
362 Zone Asia/Hong_Kong 7:36:36 - LMT 1904 Oct 30
366 ###############################################################################
370 # Shanks & Pottenger write that Taiwan observed DST during 1945, when it
371 # was still controlled by Japan. This is hard to believe, but we don't
372 # have any other information.
374 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
375 Rule Taiwan 1945 1951 - May 1 0:00 1:00 D
376 Rule Taiwan 1945 1951 - Oct 1 0:00 0 S
377 Rule Taiwan 1952 only - Mar 1 0:00 1:00 D
378 Rule Taiwan 1952 1954 - Nov 1 0:00 0 S
379 Rule Taiwan 1953 1959 - Apr 1 0:00 1:00 D
380 Rule Taiwan 1955 1961 - Oct 1 0:00 0 S
381 Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D
382 Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D
383 Rule Taiwan 1974 1975 - Oct 1 0:00 0 S
384 Rule Taiwan 1980 only - Jun 30 0:00 1:00 D
385 Rule Taiwan 1980 only - Sep 30 0:00 0 S
386 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
387 Zone Asia/Taipei 8:06:00 - LMT 1896 # or Taibei or T'ai-pei
390 # Macau (Macao, Aomen)
391 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
392 Rule Macau 1961 1962 - Mar Sun>=16 3:30 1:00 S
393 Rule Macau 1961 1964 - Nov Sun>=1 3:30 0 -
394 Rule Macau 1963 only - Mar Sun>=16 0:00 1:00 S
395 Rule Macau 1964 only - Mar Sun>=16 3:30 1:00 S
396 Rule Macau 1965 only - Mar Sun>=16 0:00 1:00 S
397 Rule Macau 1965 only - Oct 31 0:00 0 -
398 Rule Macau 1966 1971 - Apr Sun>=16 3:30 1:00 S
399 Rule Macau 1966 1971 - Oct Sun>=16 3:30 0 -
400 Rule Macau 1972 1974 - Apr Sun>=15 0:00 1:00 S
401 Rule Macau 1972 1973 - Oct Sun>=15 0:00 0 -
402 Rule Macau 1974 1977 - Oct Sun>=15 3:30 0 -
403 Rule Macau 1975 1977 - Apr Sun>=15 3:30 1:00 S
404 Rule Macau 1978 1980 - Apr Sun>=15 0:00 1:00 S
405 Rule Macau 1978 1980 - Oct Sun>=15 0:00 0 -
406 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
407 Zone Asia/Macau 7:34:20 - LMT 1912
408 8:00 Macau MO%sT 1999 Dec 20 # return to China
412 ###############################################################################
415 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
416 Rule Cyprus 1975 only - Apr 13 0:00 1:00 S
417 Rule Cyprus 1975 only - Oct 12 0:00 0 -
418 Rule Cyprus 1976 only - May 15 0:00 1:00 S
419 Rule Cyprus 1976 only - Oct 11 0:00 0 -
420 Rule Cyprus 1977 1980 - Apr Sun>=1 0:00 1:00 S
421 Rule Cyprus 1977 only - Sep 25 0:00 0 -
422 Rule Cyprus 1978 only - Oct 2 0:00 0 -
423 Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 -
424 Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S
425 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
426 Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14
427 2:00 Cyprus EE%sT 1998 Sep
429 # IATA SSIM (1998-09) has Cyprus using EU rules for the first time.
431 # Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72.
432 # However, for various reasons many users expect to find it under Europe.
433 Link Asia/Nicosia Europe/Nicosia
436 # From Paul Eggert (1994-11-19):
437 # Today's _Economist_ (p 60) reports that Georgia moved its clocks forward
438 # an hour recently, due to a law proposed by Zurab Murvanidze,
439 # an MP who went on a hunger strike for 11 days to force discussion about it!
440 # We have no details, but we'll guess they didn't move the clocks back in fall.
442 # From Mathew Englander, quoting AP (1996-10-23 13:05-04):
443 # Instead of putting back clocks at the end of October, Georgia
444 # will stay on daylight savings time this winter to save energy,
445 # President Eduard Shevardnadze decreed Wednesday.
447 # From the BBC via Joseph S. Myers (2004-06-27):
449 # Georgia moved closer to Western Europe on Sunday... The former Soviet
450 # republic has changed its time zone back to that of Moscow. As a result it
451 # is now just four hours ahead of Greenwich Mean Time, rather than five hours
452 # ahead. The switch was decreed by the pro-Western president of Georgia,
453 # Mikhail Saakashvili, who said the change was partly prompted by the process
454 # of integration into Europe.
456 # From Teimuraz Abashidze (2005-11-07):
457 # Government of Georgia ... decided to NOT CHANGE daylight savings time on
458 # [Oct.] 30, as it was done before during last more than 10 years.
459 # Currently, we are in fact GMT +4:00, as before 30 October it was GMT
460 # +3:00.... The problem is, there is NO FORMAL LAW or governmental document
461 # about it. As far as I can find, I was told, that there is no document,
462 # because we just DIDN'T ISSUE document about switching to winter time....
463 # I don't know what can be done, especially knowing that some years ago our
464 # DST rules where changed THREE TIMES during one month.
467 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
468 Zone Asia/Tbilisi 2:59:16 - LMT 1880
469 2:59:16 - TBMT 1924 May 2 # Tbilisi Mean Time
470 3:00 - TBIT 1957 Mar # Tbilisi Time
471 4:00 RussiaAsia TBI%sT 1991 Mar 31 2:00s
472 3:00 1:00 TBIST 1991 Apr 9 # independence
473 3:00 RussiaAsia GE%sT 1992 # Georgia Time
474 3:00 E-EurAsia GE%sT 1994 Sep lastSun
475 4:00 E-EurAsia GE%sT 1996 Oct lastSun
476 4:00 1:00 GEST 1997 Mar lastSun
477 4:00 E-EurAsia GE%sT 2004 Jun 27
478 3:00 RussiaAsia GE%sT 2005 Mar lastSun 2:00
483 # See Indonesia for the 1945 transition.
485 # From Joao Carrascalao, brother of the former governor of East Timor, in
486 # <a href="http://etan.org/et99c/december/26-31/30ETMAY.htm">
487 # East Timor may be late for its millennium
488 # </a> (1999-12-26/31):
489 # Portugal tried to change the time forward in 1974 because the sun
490 # rises too early but the suggestion raised a lot of problems with the
491 # Timorese and I still don't think it would work today because it
492 # conflicts with their way of life.
494 # From Paul Eggert (2000-12-04):
495 # We don't have any record of the above attempt.
496 # Most likely our records are incomplete, but we have no better data.
498 # <a href="http://www.hri.org/news/world/undh/last/00-08-16.undh.html">
499 # From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General
501 # The Cabinet of the East Timor Transition Administration decided
502 # today to advance East Timor's time by one hour. The time change,
503 # which will be permanent, with no seasonal adjustment, will happen at
504 # midnight on Saturday, September 16.
506 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
507 Zone Asia/Dili 8:22:20 - LMT 1912
508 8:00 - TLT 1942 Feb 21 23:00 # E Timor Time
509 9:00 - JST 1945 Sep 23
510 9:00 - TLT 1976 May 3
511 8:00 - CIT 2000 Sep 17 00:00
515 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
516 Zone Asia/Kolkata 5:53:28 - LMT 1880 # Kolkata
517 5:53:20 - HMT 1941 Oct # Howrah Mean Time?
518 6:30 - BURT 1942 May 15 # Burma Time
520 5:30 1:00 IST 1945 Oct 15
522 # The following are like Asia/Kolkata:
524 # Lakshadweep (Laccadive, Minicoy and Amindivi Is)
529 # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger:
530 # <http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime>
531 # says that Indonesia's time zones changed on 1988-01-01. Looking at some
532 # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
533 # and Kalimantan Tengah) switching from UTC+8 to UTC+7.
535 # From Paul Eggert (2007-03-10):
536 # Here is another correction to Shanks & Pottenger.
537 # JohnTWB writes that Japanese forces did not surrender control in
538 # Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and
539 # other formal surrender ceremonies were September 9, 11, and 13, plus
540 # September 12 for the regional surrender to Mountbatten in Singapore.
541 # These would be the earliest possible times for a change.
542 # Regimes horaires pour le monde entier, by Henri Le Corre, (Editions
543 # Traditionnelles, 1987, Paris) says that Java and Madura switched
544 # from JST to UTC+07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura
545 # (Hollandia). For now, assume all Indonesian locations other than Jayapura
546 # switched on 1945-09-23.
548 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
549 Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10
550 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
551 # but this must be a typo.
552 7:07:12 - JMT 1923 Dec 31 23:47:12 # Jakarta
553 7:20 - JAVT 1932 Nov # Java Time
554 7:30 - WIT 1942 Mar 23
555 9:00 - JST 1945 Sep 23
560 Zone Asia/Pontianak 7:17:20 - LMT 1908 May
561 7:17:20 - PMT 1932 Nov # Pontianak MT
562 7:30 - WIT 1942 Jan 29
563 9:00 - JST 1945 Sep 23
567 8:00 - CIT 1988 Jan 1
569 Zone Asia/Makassar 7:57:36 - LMT 1920
570 7:57:36 - MMT 1932 Nov # Macassar MT
571 8:00 - CIT 1942 Feb 9
572 9:00 - JST 1945 Sep 23
574 Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov
575 9:00 - EIT 1944 Sep 1
581 # From Roozbeh Pournader (2003-03-15):
582 # This is an English translation of what I just found (originally in Persian).
583 # The Gregorian dates in brackets are mine:
585 # Official Newspaper No. 13548-1370/6/25 [1991-09-16]
586 # No. 16760/T233 H 1370/6/10 [1991-09-01]
588 # The Rule About Change of the Official Time of the Country
590 # The Board of Ministers, in the meeting dated 1370/5/23 [1991-08-14],
591 # based on the suggestion number 2221/D dated 1370/4/22 [1991-07-13]
592 # of the Country's Organization for Official and Employment Affairs,
593 # and referring to the law for equating the working hours of workers
594 # and officers in the whole country dated 1359/4/23 [1980-07-14], and
595 # for synchronizing the official times of the country, agreed that:
597 # The official time of the country will should move forward one hour
598 # at the 24[:00] hours of the first day of Farvardin and should return
599 # to its previous state at the 24[:00] hours of the 30th day of
602 # First Deputy to the President - Hassan Habibi
604 # From personal experience, that agrees with what has been followed
605 # for at least the last 5 years. Before that, for a few years, the
606 # date used was the first Thursday night of Farvardin and the last
607 # Thursday night of Shahrivar, but I can't give exact dates....
608 # I have also changed the abbreviations to what is considered correct
609 # here in Iran, IRST for regular time and IRDT for daylight saving time.
611 # From Roozbeh Pournader (2005-04-05):
612 # The text of the Iranian law, in effect since 1925, clearly mentions
613 # that the true solar year is the measure, and there is no arithmetic
614 # leap year calculation involved. There has never been any serious
615 # plan to change that law....
617 # From Paul Eggert (2006-03-22):
618 # Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter.
619 # I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates,
620 # stopping after 2037 when 32-bit time_t's overflow.
621 # That cal-persia used Birashk's approximation, which disagrees with the solar
622 # calendar predictions for the year 2025, so I corrected those dates by hand.
624 # From Oscar van Vlijmen (2005-03-30), writing about future
625 # discrepancies between cal-persia and the Iranian calendar:
626 # For 2091 solar-longitude-after yields 2091-03-20 08:40:07.7 UT for
627 # the vernal equinox and that gets so close to 12:00 some local
628 # Iranian time that the definition of the correct location needs to be
629 # known exactly, amongst other factors. 2157 is even closer:
630 # 2157-03-20 08:37:15.5 UT. But the Gregorian year 2025 should give
631 # no interpretation problem whatsoever. By the way, another instant
632 # in the near future where there will be a discrepancy between
633 # arithmetical and astronomical Iranian calendars will be in 2058:
634 # vernal equinox on 2058-03-20 09:03:05.9 UT. The Java version of
635 # Reingold's/Dershowitz' calculator gives correctly the Gregorian date
636 # 2058-03-21 for 1 Farvardin 1437 (astronomical).
638 # From Steffen Thorsen (2006-03-22):
639 # Several of my users have reported that Iran will not observe DST anymore:
640 # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm
642 # From Reuters (2007-09-16), with a heads-up from Jesper Norgaard Welen:
643 # ... the Guardian Council ... approved a law on Sunday to re-introduce
644 # daylight saving time ...
645 # http://uk.reuters.com/article/oilRpt/idUKBLA65048420070916
647 # From Roozbeh Pournader (2007-11-05):
648 # This is quoted from Official Gazette of the Islamic Republic of
649 # Iran, Volume 63, Number 18242, dated Tuesday 1386/6/24
650 # [2007-10-16]. I am doing the best translation I can:...
651 # The official time of the country will be moved forward for one hour
652 # on the 24 hours of the first day of the month of Farvardin and will
653 # be changed back to its previous state on the 24 hours of the
654 # thirtieth day of Shahrivar.
656 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
657 Rule Iran 1978 1980 - Mar 21 0:00 1:00 D
658 Rule Iran 1978 only - Oct 21 0:00 0 S
659 Rule Iran 1979 only - Sep 19 0:00 0 S
660 Rule Iran 1980 only - Sep 23 0:00 0 S
661 Rule Iran 1991 only - May 3 0:00 1:00 D
662 Rule Iran 1992 1995 - Mar 22 0:00 1:00 D
663 Rule Iran 1991 1995 - Sep 22 0:00 0 S
664 Rule Iran 1996 only - Mar 21 0:00 1:00 D
665 Rule Iran 1996 only - Sep 21 0:00 0 S
666 Rule Iran 1997 1999 - Mar 22 0:00 1:00 D
667 Rule Iran 1997 1999 - Sep 22 0:00 0 S
668 Rule Iran 2000 only - Mar 21 0:00 1:00 D
669 Rule Iran 2000 only - Sep 21 0:00 0 S
670 Rule Iran 2001 2003 - Mar 22 0:00 1:00 D
671 Rule Iran 2001 2003 - Sep 22 0:00 0 S
672 Rule Iran 2004 only - Mar 21 0:00 1:00 D
673 Rule Iran 2004 only - Sep 21 0:00 0 S
674 Rule Iran 2005 only - Mar 22 0:00 1:00 D
675 Rule Iran 2005 only - Sep 22 0:00 0 S
676 Rule Iran 2008 only - Mar 21 0:00 1:00 D
677 Rule Iran 2008 only - Sep 21 0:00 0 S
678 Rule Iran 2009 2011 - Mar 22 0:00 1:00 D
679 Rule Iran 2009 2011 - Sep 22 0:00 0 S
680 Rule Iran 2012 only - Mar 21 0:00 1:00 D
681 Rule Iran 2012 only - Sep 21 0:00 0 S
682 Rule Iran 2013 2015 - Mar 22 0:00 1:00 D
683 Rule Iran 2013 2015 - Sep 22 0:00 0 S
684 Rule Iran 2016 only - Mar 21 0:00 1:00 D
685 Rule Iran 2016 only - Sep 21 0:00 0 S
686 Rule Iran 2017 2019 - Mar 22 0:00 1:00 D
687 Rule Iran 2017 2019 - Sep 22 0:00 0 S
688 Rule Iran 2020 only - Mar 21 0:00 1:00 D
689 Rule Iran 2020 only - Sep 21 0:00 0 S
690 Rule Iran 2021 2023 - Mar 22 0:00 1:00 D
691 Rule Iran 2021 2023 - Sep 22 0:00 0 S
692 Rule Iran 2024 only - Mar 21 0:00 1:00 D
693 Rule Iran 2024 only - Sep 21 0:00 0 S
694 Rule Iran 2025 2027 - Mar 22 0:00 1:00 D
695 Rule Iran 2025 2027 - Sep 22 0:00 0 S
696 Rule Iran 2028 2029 - Mar 21 0:00 1:00 D
697 Rule Iran 2028 2029 - Sep 21 0:00 0 S
698 Rule Iran 2030 2031 - Mar 22 0:00 1:00 D
699 Rule Iran 2030 2031 - Sep 22 0:00 0 S
700 Rule Iran 2032 2033 - Mar 21 0:00 1:00 D
701 Rule Iran 2032 2033 - Sep 21 0:00 0 S
702 Rule Iran 2034 2035 - Mar 22 0:00 1:00 D
703 Rule Iran 2034 2035 - Sep 22 0:00 0 S
704 Rule Iran 2036 2037 - Mar 21 0:00 1:00 D
705 Rule Iran 2036 2037 - Sep 21 0:00 0 S
706 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
707 Zone Asia/Tehran 3:25:44 - LMT 1916
708 3:25:44 - TMT 1946 # Tehran Mean Time
716 # From Jonathan Lennox (2000-06-12):
717 # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in
718 # the U.S. edition) on the Iraqi Kurds contains a paragraph:
719 # "The three northern provinces ... switched their clocks this spring and
720 # are an hour ahead of Baghdad."
722 # But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows:
723 # In the past, some Kurdish nationalists, as a protest to the Iraqi
724 # Government, did not adhere to daylight saving time. They referred
725 # to daylight saving as Saddam time. But, as of today, the time zone
726 # in Iraqi-Kurdistan is on standard time with Baghdad, Iraq.
728 # So we'll ignore the Economist's claim.
730 # From Steffen Thorsen (2008-03-10):
731 # The cabinet in Iraq abolished DST last week, according to the following
732 # news sources (in Arabic):
733 # <a href="http://www.aljeeran.net/wesima_articles/news-20080305-98602.html">
734 # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html
736 # <a href="http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10">
737 # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10
740 # We have published a short article in English about the change:
741 # <a href="http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html">
742 # http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html
745 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
746 Rule Iraq 1982 only - May 1 0:00 1:00 D
747 Rule Iraq 1982 1984 - Oct 1 0:00 0 S
748 Rule Iraq 1983 only - Mar 31 0:00 1:00 D
749 Rule Iraq 1984 1985 - Apr 1 0:00 1:00 D
750 Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 S
751 Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 D
752 # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the `:01' is a typo.
753 # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this.
755 Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 D
756 Rule Iraq 1991 2007 - Oct 1 3:00s 0 S
757 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
758 Zone Asia/Baghdad 2:57:40 - LMT 1890
759 2:57:36 - BMT 1918 # Baghdad Mean Time?
764 ###############################################################################
768 # From Ephraim Silverberg (2001-01-11):
770 # I coined "IST/IDT" circa 1988. Until then there were three
771 # different abbreviations in use:
773 # JST Jerusalem Standard Time [Danny Braniss, Hebrew University]
774 # IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion]
775 # EEST Eastern Europe Standard Time [used by almost everyone else]
777 # Since timezones should be called by country and not capital cities,
778 # I ruled out JST. As Israel is in Asia Minor and not Eastern Europe,
779 # EEST was equally unacceptable. Since "zonal" was not compatible with
780 # any other timezone abbreviation, I felt that 'IST' was the way to go
781 # and, indeed, it has received almost universal acceptance in timezone
782 # settings in Israeli computers.
784 # In any case, I am happy to share timezone abbreviations with India,
785 # high on my favorite-country list (and not only because my wife's
786 # family is from India).
788 # From Shanks & Pottenger:
789 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
790 Rule Zion 1940 only - Jun 1 0:00 1:00 D
791 Rule Zion 1942 1944 - Nov 1 0:00 0 S
792 Rule Zion 1943 only - Apr 1 2:00 1:00 D
793 Rule Zion 1944 only - Apr 1 0:00 1:00 D
794 Rule Zion 1945 only - Apr 16 0:00 1:00 D
795 Rule Zion 1945 only - Nov 1 2:00 0 S
796 Rule Zion 1946 only - Apr 16 2:00 1:00 D
797 Rule Zion 1946 only - Nov 1 0:00 0 S
798 Rule Zion 1948 only - May 23 0:00 2:00 DD
799 Rule Zion 1948 only - Sep 1 0:00 1:00 D
800 Rule Zion 1948 1949 - Nov 1 2:00 0 S
801 Rule Zion 1949 only - May 1 0:00 1:00 D
802 Rule Zion 1950 only - Apr 16 0:00 1:00 D
803 Rule Zion 1950 only - Sep 15 3:00 0 S
804 Rule Zion 1951 only - Apr 1 0:00 1:00 D
805 Rule Zion 1951 only - Nov 11 3:00 0 S
806 Rule Zion 1952 only - Apr 20 2:00 1:00 D
807 Rule Zion 1952 only - Oct 19 3:00 0 S
808 Rule Zion 1953 only - Apr 12 2:00 1:00 D
809 Rule Zion 1953 only - Sep 13 3:00 0 S
810 Rule Zion 1954 only - Jun 13 0:00 1:00 D
811 Rule Zion 1954 only - Sep 12 0:00 0 S
812 Rule Zion 1955 only - Jun 11 2:00 1:00 D
813 Rule Zion 1955 only - Sep 11 0:00 0 S
814 Rule Zion 1956 only - Jun 3 0:00 1:00 D
815 Rule Zion 1956 only - Sep 30 3:00 0 S
816 Rule Zion 1957 only - Apr 29 2:00 1:00 D
817 Rule Zion 1957 only - Sep 22 0:00 0 S
818 Rule Zion 1974 only - Jul 7 0:00 1:00 D
819 Rule Zion 1974 only - Oct 13 0:00 0 S
820 Rule Zion 1975 only - Apr 20 0:00 1:00 D
821 Rule Zion 1975 only - Aug 31 0:00 0 S
822 Rule Zion 1985 only - Apr 14 0:00 1:00 D
823 Rule Zion 1985 only - Sep 15 0:00 0 S
824 Rule Zion 1986 only - May 18 0:00 1:00 D
825 Rule Zion 1986 only - Sep 7 0:00 0 S
826 Rule Zion 1987 only - Apr 15 0:00 1:00 D
827 Rule Zion 1987 only - Sep 13 0:00 0 S
828 Rule Zion 1988 only - Apr 9 0:00 1:00 D
829 Rule Zion 1988 only - Sep 3 0:00 0 S
831 # From Ephraim Silverberg
832 # (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, 2004-12-22,
835 # According to the Office of the Secretary General of the Ministry of
836 # Interior, there is NO set rule for Daylight-Savings/Standard time changes.
837 # One thing is entrenched in law, however: that there must be at least 150
838 # days of daylight savings time annually. From 1993-1998, the change to
839 # daylight savings time was on a Friday morning from midnight IST to
840 # 1 a.m IDT; up until 1998, the change back to standard time was on a
841 # Saturday night from midnight daylight savings time to 11 p.m. standard
842 # time. 1996 is an exception to this rule where the change back to standard
843 # time took place on Sunday night instead of Saturday night to avoid
844 # conflicts with the Jewish New Year. In 1999, the change to
845 # daylight savings time was still on a Friday morning but from
846 # 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time
847 # was also on a Friday morning from 2 a.m. IDT to 1 a.m. IST for
848 # 1999 only. In the year 2000, the change to daylight savings time was
849 # similar to 1999, but although the change back will be on a Friday, it
850 # will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all
851 # changes to/from will take place at 1 a.m. old time, but now there is no
852 # rule as to what day of the week it will take place in as the start date
853 # (except in 2003) is the night after the Passover Seder (i.e. the eve
854 # of the 16th of Nisan in the lunar Hebrew calendar) and the end date
855 # (except in 2002) is three nights before Yom Kippur [Day of Atonement]
856 # (the eve of the 7th of Tishrei in the lunar Hebrew calendar).
858 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
859 Rule Zion 1989 only - Apr 30 0:00 1:00 D
860 Rule Zion 1989 only - Sep 3 0:00 0 S
861 Rule Zion 1990 only - Mar 25 0:00 1:00 D
862 Rule Zion 1990 only - Aug 26 0:00 0 S
863 Rule Zion 1991 only - Mar 24 0:00 1:00 D
864 Rule Zion 1991 only - Sep 1 0:00 0 S
865 Rule Zion 1992 only - Mar 29 0:00 1:00 D
866 Rule Zion 1992 only - Sep 6 0:00 0 S
867 Rule Zion 1993 only - Apr 2 0:00 1:00 D
868 Rule Zion 1993 only - Sep 5 0:00 0 S
870 # The dates for 1994-1995 were obtained from Office of the Spokeswoman for the
871 # Ministry of Interior, Jerusalem, Israel. The spokeswoman can be reached by
872 # calling the office directly at 972-2-6701447 or 972-2-6701448.
874 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
875 Rule Zion 1994 only - Apr 1 0:00 1:00 D
876 Rule Zion 1994 only - Aug 28 0:00 0 S
877 Rule Zion 1995 only - Mar 31 0:00 1:00 D
878 Rule Zion 1995 only - Sep 3 0:00 0 S
880 # The dates for 1996 were determined by the Minister of Interior of the
881 # time, Haim Ramon. The official announcement regarding 1996-1998
882 # (with the dates for 1997-1998 no longer being relevant) can be viewed at:
884 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
886 # The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa.
888 # The official announcements for the years 1997-1999 can be viewed at:
890 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/YYYY.ps.gz
892 # where YYYY is the relevant year.
894 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
895 Rule Zion 1996 only - Mar 15 0:00 1:00 D
896 Rule Zion 1996 only - Sep 16 0:00 0 S
897 Rule Zion 1997 only - Mar 21 0:00 1:00 D
898 Rule Zion 1997 only - Sep 14 0:00 0 S
899 Rule Zion 1998 only - Mar 20 0:00 1:00 D
900 Rule Zion 1998 only - Sep 6 0:00 0 S
901 Rule Zion 1999 only - Apr 2 2:00 1:00 D
902 Rule Zion 1999 only - Sep 3 2:00 0 S
904 # The Knesset Interior Committee has changed the dates for 2000 for
905 # the third time in just over a year and have set new dates for the
906 # years 2001-2004 as well.
908 # The official announcement for the start date of 2000 can be viewed at:
910 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-start.ps.gz
912 # The official announcement for the end date of 2000 and the dates
913 # for the years 2001-2004 can be viewed at:
915 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz
917 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
918 Rule Zion 2000 only - Apr 14 2:00 1:00 D
919 Rule Zion 2000 only - Oct 6 1:00 0 S
920 Rule Zion 2001 only - Apr 9 1:00 1:00 D
921 Rule Zion 2001 only - Sep 24 1:00 0 S
922 Rule Zion 2002 only - Mar 29 1:00 1:00 D
923 Rule Zion 2002 only - Oct 7 1:00 0 S
924 Rule Zion 2003 only - Mar 28 1:00 1:00 D
925 Rule Zion 2003 only - Oct 3 1:00 0 S
926 Rule Zion 2004 only - Apr 7 1:00 1:00 D
927 Rule Zion 2004 only - Sep 22 1:00 0 S
929 # The proposed law agreed upon by the Knesset Interior Committee on
930 # 2005-02-14 is that, for 2005 and beyond, DST starts at 02:00 the
931 # last Friday before April 2nd (i.e. the last Friday in March or April
932 # 1st itself if it falls on a Friday) and ends at 02:00 on the Saturday
933 # night _before_ the fast of Yom Kippur.
935 # Those who can read Hebrew can view the announcement at:
937 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps
939 # From Paul Eggert (2005-02-22):
940 # I used Ephraim Silverberg's dst-israel.el program
941 # <ftp://ftp.cs.huji.ac.il/pub/tz/software/dst-israel.el> (2005-02-20)
942 # along with Ed Reingold's cal-hebrew in GNU Emacs 21.4,
943 # to generate the transitions in this list.
944 # (I replaced "lastFri" with "Fri>=26" by hand.)
945 # The spring transitions below all correspond to the following Rule:
947 # Rule Zion 2005 max - Mar Fri>=26 2:00 1:00 D
949 # but older zic implementations (e.g., Solaris 8) do not support
950 # "Fri>=26" to mean April 1 in years like 2005, so for now we list the
951 # springtime transitions explicitly.
953 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
954 Rule Zion 2005 only - Apr 1 2:00 1:00 D
955 Rule Zion 2005 only - Oct 9 2:00 0 S
956 Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D
957 Rule Zion 2006 only - Oct 1 2:00 0 S
958 Rule Zion 2007 only - Sep 16 2:00 0 S
959 Rule Zion 2008 only - Oct 5 2:00 0 S
960 Rule Zion 2009 only - Sep 27 2:00 0 S
961 Rule Zion 2010 only - Sep 12 2:00 0 S
962 Rule Zion 2011 only - Apr 1 2:00 1:00 D
963 Rule Zion 2011 only - Oct 2 2:00 0 S
964 Rule Zion 2012 2015 - Mar Fri>=26 2:00 1:00 D
965 Rule Zion 2012 only - Sep 23 2:00 0 S
966 Rule Zion 2013 only - Sep 8 2:00 0 S
967 Rule Zion 2014 only - Sep 28 2:00 0 S
968 Rule Zion 2015 only - Sep 20 2:00 0 S
969 Rule Zion 2016 only - Apr 1 2:00 1:00 D
970 Rule Zion 2016 only - Oct 9 2:00 0 S
971 Rule Zion 2017 2021 - Mar Fri>=26 2:00 1:00 D
972 Rule Zion 2017 only - Sep 24 2:00 0 S
973 Rule Zion 2018 only - Sep 16 2:00 0 S
974 Rule Zion 2019 only - Oct 6 2:00 0 S
975 Rule Zion 2020 only - Sep 27 2:00 0 S
976 Rule Zion 2021 only - Sep 12 2:00 0 S
977 Rule Zion 2022 only - Apr 1 2:00 1:00 D
978 Rule Zion 2022 only - Oct 2 2:00 0 S
979 Rule Zion 2023 2032 - Mar Fri>=26 2:00 1:00 D
980 Rule Zion 2023 only - Sep 24 2:00 0 S
981 Rule Zion 2024 only - Oct 6 2:00 0 S
982 Rule Zion 2025 only - Sep 28 2:00 0 S
983 Rule Zion 2026 only - Sep 20 2:00 0 S
984 Rule Zion 2027 only - Oct 10 2:00 0 S
985 Rule Zion 2028 only - Sep 24 2:00 0 S
986 Rule Zion 2029 only - Sep 16 2:00 0 S
987 Rule Zion 2030 only - Oct 6 2:00 0 S
988 Rule Zion 2031 only - Sep 21 2:00 0 S
989 Rule Zion 2032 only - Sep 12 2:00 0 S
990 Rule Zion 2033 only - Apr 1 2:00 1:00 D
991 Rule Zion 2033 only - Oct 2 2:00 0 S
992 Rule Zion 2034 2037 - Mar Fri>=26 2:00 1:00 D
993 Rule Zion 2034 only - Sep 17 2:00 0 S
994 Rule Zion 2035 only - Oct 7 2:00 0 S
995 Rule Zion 2036 only - Sep 28 2:00 0 S
996 Rule Zion 2037 only - Sep 13 2:00 0 S
998 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
999 Zone Asia/Jerusalem 2:20:56 - LMT 1880
1000 2:20:40 - JMT 1918 # Jerusalem Mean Time?
1005 ###############################################################################
1009 # `9:00' and `JST' is from Guy Harris.
1011 # From Paul Eggert (1995-03-06):
1012 # Today's _Asahi Evening News_ (page 4) reports that Japan had
1013 # daylight saving between 1948 and 1951, but ``the system was discontinued
1014 # because the public believed it would lead to longer working hours.''
1016 # From Mayumi Negishi in the 2005-08-10 Japan Times
1017 # <http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?nn20050810f2.htm>:
1018 # Occupation authorities imposed daylight-saving time on Japan on
1019 # [1948-05-01].... But lack of prior debate and the execution of
1020 # daylight-saving time just three days after the bill was passed generated
1021 # deep hatred of the concept.... The Diet unceremoniously passed a bill to
1022 # dump the unpopular system in October 1951, less than a month after the San
1023 # Francisco Peace Treaty was signed. (A government poll in 1951 showed 53%
1024 # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who
1025 # wanted to keep it.)
1027 # From Paul Eggert (2006-03-22):
1028 # Shanks & Pottenger write that DST in Japan during those years was as follows:
1029 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1030 Rule Japan 1948 only - May Sun>=1 2:00 1:00 D
1031 Rule Japan 1948 1951 - Sep Sat>=8 2:00 0 S
1032 Rule Japan 1949 only - Apr Sun>=1 2:00 1:00 D
1033 Rule Japan 1950 1951 - May Sun>=1 2:00 1:00 D
1034 # but the only locations using it (for birth certificates, presumably, since
1035 # their audience is astrologers) were US military bases. For now, assume
1036 # that for most purposes daylight-saving time was observed; otherwise, what
1037 # would have been the point of the 1951 poll?
1039 # From Hideyuki Suzuki (1998-11-09):
1040 # 'Tokyo' usually stands for the former location of Tokyo Astronomical
1041 # Observatory: E 139 44' 40".90 (9h 18m 58s.727), N 35 39' 16".0.
1042 # This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996'
1043 # edited by National Astronomical Observatory of Japan....
1044 # JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST).
1045 # The law is enacted on 1886-07-07.
1047 # From Hideyuki Suzuki (1998-11-16):
1048 # The ordinance No. 51 (1886) established "standard time" in Japan,
1049 # which stands for the time on E 135 degree.
1050 # In the ordinance No. 167 (1895), "standard time" was renamed to "central
1051 # standard time". And the same ordinance also established "western standard
1052 # time", which stands for the time on E 120 degree.... But "western standard
1053 # time" was abolished in the ordinance No. 529 (1937). In the ordinance No.
1054 # 167, there is no mention regarding for what place western standard time is
1057 # I wrote "ordinance" above, but I don't know how to translate.
1058 # In Japanese it's "chokurei", which means ordinance from emperor.
1060 # Shanks & Pottenger claim JST in use since 1896, and that a few
1061 # places (e.g. Ishigaki) use +0800; go with Suzuki. Guess that all
1062 # ordinances took effect on Jan 1.
1064 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1065 Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
1069 # Since 1938, all Japanese possessions have been like Asia/Tokyo.
1073 # From <a href="http://star.arabia.com/990701/JO9.html">
1074 # Jordan Week (1999-07-01) </a> via Steffen Thorsen (1999-09-09):
1075 # Clocks in Jordan were forwarded one hour on Wednesday at midnight,
1076 # in accordance with the government's decision to implement summer time
1079 # From <a href="http://star.arabia.com/990930/JO9.html">
1080 # Jordan Week (1999-09-30) </a> via Steffen Thorsen (1999-11-09):
1081 # Winter time starts today Thursday, 30 September. Clocks will be turned back
1082 # by one hour. This is the latest government decision and it's final!
1083 # The decision was taken because of the increase in working hours in
1084 # government's departments from six to seven hours.
1086 # From Paul Eggert (2005-11-22):
1087 # Starting 2003 transitions are from Steffen Thorsen's web site timeanddate.com.
1089 # From Steffen Thorsen (2005-11-23):
1090 # For Jordan I have received multiple independent user reports every year
1091 # about DST end dates, as the end-rule is different every year.
1093 # From Steffen Thorsen (2006-10-01), after a heads-up from Hilal Malawi:
1094 # http://www.petranews.gov.jo/nepras/2006/Sep/05/4000.htm
1095 # "Jordan will switch to winter time on Friday, October 27".
1098 # From Phil Pizzey (2009-04-02):
1099 # ...I think I may have spotted an error in the timezone data for
1101 # The current (2009d) asia file shows Jordan going to daylight
1103 # time on the last Thursday in March.
1105 # Rule Jordan 2000 max - Mar lastThu 0:00s 1:00 S
1107 # However timeanddate.com, which I usually find reliable, shows Jordan
1108 # going to daylight saving time on the last Friday in March since 2002.
1110 # <a href="http://www.timeanddate.com/worldclock/timezone.html?n=11">
1111 # http://www.timeanddate.com/worldclock/timezone.html?n=11
1114 # From Steffen Thorsen (2009-04-02):
1115 # This single one might be good enough, (2009-03-24, Arabic):
1116 # <a href="http://petra.gov.jo/Artical.aspx?Lng=2&Section=8&Artical=95279">
1117 # http://petra.gov.jo/Artical.aspx?Lng=2&Section=8&Artical=95279
1120 # Google's translation:
1122 # > The Council of Ministers decided in 2002 to adopt the principle of timely
1123 # > submission of the summer at 60 minutes as of midnight on the last Thursday
1124 # > of the month of March of each year.
1126 # So - this means the midnight between Thursday and Friday since 2002.
1128 # From Arthur David Olson (2009-04-06):
1129 # We still have Jordan switching to DST on Thursdays in 2000 and 2001.
1131 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1132 Rule Jordan 1973 only - Jun 6 0:00 1:00 S
1133 Rule Jordan 1973 1975 - Oct 1 0:00 0 -
1134 Rule Jordan 1974 1977 - May 1 0:00 1:00 S
1135 Rule Jordan 1976 only - Nov 1 0:00 0 -
1136 Rule Jordan 1977 only - Oct 1 0:00 0 -
1137 Rule Jordan 1978 only - Apr 30 0:00 1:00 S
1138 Rule Jordan 1978 only - Sep 30 0:00 0 -
1139 Rule Jordan 1985 only - Apr 1 0:00 1:00 S
1140 Rule Jordan 1985 only - Oct 1 0:00 0 -
1141 Rule Jordan 1986 1988 - Apr Fri>=1 0:00 1:00 S
1142 Rule Jordan 1986 1990 - Oct Fri>=1 0:00 0 -
1143 Rule Jordan 1989 only - May 8 0:00 1:00 S
1144 Rule Jordan 1990 only - Apr 27 0:00 1:00 S
1145 Rule Jordan 1991 only - Apr 17 0:00 1:00 S
1146 Rule Jordan 1991 only - Sep 27 0:00 0 -
1147 Rule Jordan 1992 only - Apr 10 0:00 1:00 S
1148 Rule Jordan 1992 1993 - Oct Fri>=1 0:00 0 -
1149 Rule Jordan 1993 1998 - Apr Fri>=1 0:00 1:00 S
1150 Rule Jordan 1994 only - Sep Fri>=15 0:00 0 -
1151 Rule Jordan 1995 1998 - Sep Fri>=15 0:00s 0 -
1152 Rule Jordan 1999 only - Jul 1 0:00s 1:00 S
1153 Rule Jordan 1999 2002 - Sep lastFri 0:00s 0 -
1154 Rule Jordan 2000 2001 - Mar lastThu 0:00s 1:00 S
1155 Rule Jordan 2002 max - Mar lastThu 24:00 1:00 S
1156 Rule Jordan 2003 only - Oct 24 0:00s 0 -
1157 Rule Jordan 2004 only - Oct 15 0:00s 0 -
1158 Rule Jordan 2005 only - Sep lastFri 0:00s 0 -
1159 Rule Jordan 2006 max - Oct lastFri 0:00s 0 -
1160 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1161 Zone Asia/Amman 2:23:44 - LMT 1931
1167 # From Paul Eggert (1996-11-22):
1168 # Andrew Evtichov (1996-04-13) writes that Kazakhstan
1169 # stayed in sync with Moscow after 1990, and that Aqtobe (formerly Aktyubinsk)
1170 # and Aqtau (formerly Shevchenko) are the largest cities in their zones.
1171 # Guess that Aqtau and Aqtobe diverged in 1995, since that's the first time
1172 # IATA SSIM mentions a third time zone in Kazakhstan.
1174 # From Paul Eggert (2006-03-22):
1175 # German Iofis, ELSI, Almaty (2001-10-09) reports that Kazakhstan uses
1176 # RussiaAsia rules, instead of switching at 00:00 as the IATA has it.
1177 # Go with Shanks & Pottenger, who have them always using RussiaAsia rules.
1178 # Also go with the following claims of Shanks & Pottenger:
1180 # - Kazakhstan did not observe DST in 1991.
1181 # - Qyzylorda switched from +5:00 to +6:00 on 1992-01-19 02:00.
1182 # - Oral switched from +5:00 to +4:00 in spring 1989.
1184 # <a href="http://www.kazsociety.org.uk/news/2005/03/30.htm">
1185 # From Kazakhstan Embassy's News Bulletin #11 (2005-03-21):
1187 # The Government of Kazakhstan passed a resolution March 15 abolishing
1188 # daylight saving time citing lack of economic benefits and health
1189 # complications coupled with a decrease in productivity.
1191 # From Branislav Kojic (in Astana) via Gwillim Law (2005-06-28):
1192 # ... what happened was that the former Kazakhstan Eastern time zone
1193 # was "blended" with the Central zone. Therefore, Kazakhstan now has
1194 # two time zones, and difference between them is one hour. The zone
1195 # closer to UTC is the former Western zone (probably still called the
1196 # same), encompassing four provinces in the west: Aqtobe, Atyrau,
1197 # Mangghystau, and West Kazakhstan. The other zone encompasses
1198 # everything else.... I guess that would make Kazakhstan time zones
1199 # de jure UTC+5 and UTC+6 respectively.
1202 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1204 # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan
1205 Zone Asia/Almaty 5:07:48 - LMT 1924 May 2 # or Alma-Ata
1206 5:00 - ALMT 1930 Jun 21 # Alma-Ata Time
1207 6:00 RussiaAsia ALM%sT 1991
1209 6:00 RussiaAsia ALM%sT 2005 Mar 15
1211 # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.)
1212 Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2
1213 4:00 - KIZT 1930 Jun 21 # Kizilorda Time
1214 5:00 - KIZT 1981 Apr 1
1215 5:00 1:00 KIZST 1981 Oct 1
1216 6:00 - KIZT 1982 Apr 1
1217 5:00 RussiaAsia KIZ%sT 1991
1218 5:00 - KIZT 1991 Dec 16 # independence
1219 5:00 - QYZT 1992 Jan 19 2:00
1220 6:00 RussiaAsia QYZ%sT 2005 Mar 15
1222 # Aqtobe (aka Aktobe, formerly Akt'ubinsk)
1223 Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2
1224 4:00 - AKTT 1930 Jun 21 # Aktyubinsk Time
1225 5:00 - AKTT 1981 Apr 1
1226 5:00 1:00 AKTST 1981 Oct 1
1227 6:00 - AKTT 1982 Apr 1
1228 5:00 RussiaAsia AKT%sT 1991
1229 5:00 - AKTT 1991 Dec 16 # independence
1230 5:00 RussiaAsia AQT%sT 2005 Mar 15 # Aqtobe Time
1233 # Aqtau was not founded until 1963, but it represents an inhabited region,
1234 # so include time stamps before 1963.
1235 Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2
1236 4:00 - FORT 1930 Jun 21 # Fort Shevchenko T
1238 5:00 - SHET 1981 Oct 1 # Shevchenko Time
1239 6:00 - SHET 1982 Apr 1
1240 5:00 RussiaAsia SHE%sT 1991
1241 5:00 - SHET 1991 Dec 16 # independence
1242 5:00 RussiaAsia AQT%sT 1995 Mar lastSun 2:00 # Aqtau Time
1243 4:00 RussiaAsia AQT%sT 2005 Mar 15
1246 Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk
1247 4:00 - URAT 1930 Jun 21 # Ural'sk time
1248 5:00 - URAT 1981 Apr 1
1249 5:00 1:00 URAST 1981 Oct 1
1250 6:00 - URAT 1982 Apr 1
1251 5:00 RussiaAsia URA%sT 1989 Mar 26 2:00
1252 4:00 RussiaAsia URA%sT 1991
1253 4:00 - URAT 1991 Dec 16 # independence
1254 4:00 RussiaAsia ORA%sT 2005 Mar 15 # Oral Time
1257 # Kyrgyzstan (Kirgizstan)
1258 # Transitions through 1991 are from Shanks & Pottenger.
1260 # From Paul Eggert (2005-08-15):
1261 # According to an article dated today in the Kyrgyzstan Development Gateway
1262 # <http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml>
1263 # Kyrgyzstan is canceling the daylight saving time system. I take the article
1264 # to mean that they will leave their clocks at 6 hours ahead of UTC.
1265 # From Malik Abdugaliev (2005-09-21):
1266 # Our government cancels daylight saving time 6th of August 2005.
1267 # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
1269 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1270 Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 S
1271 Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 -
1272 Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 S
1273 Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 -
1274 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1275 Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2
1276 5:00 - FRUT 1930 Jun 21 # Frunze Time
1277 6:00 RussiaAsia FRU%sT 1991 Mar 31 2:00s
1278 5:00 1:00 FRUST 1991 Aug 31 2:00 # independence
1279 5:00 Kyrgyz KG%sT 2005 Aug 12 # Kyrgyzstan Time
1282 ###############################################################################
1284 # Korea (North and South)
1286 # From Annie I. Bang (2006-07-10) in
1287 # <http://www.koreaherald.co.kr/SITE/data/html_dir/2006/07/10/200607100012.asp>:
1288 # The Ministry of Commerce, Industry and Energy has already
1289 # commissioned a research project [to reintroduce DST] and has said
1290 # the system may begin as early as 2008.... Korea ran a daylight
1291 # saving program from 1949-61 but stopped it during the 1950-53 Korean War.
1293 # From Shanks & Pottenger:
1294 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1295 Rule ROK 1960 only - May 15 0:00 1:00 D
1296 Rule ROK 1960 only - Sep 13 0:00 0 S
1297 Rule ROK 1987 1988 - May Sun>=8 0:00 1:00 D
1298 Rule ROK 1987 1988 - Oct Sun>=8 0:00 0 S
1300 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1301 Zone Asia/Seoul 8:27:52 - LMT 1890
1305 9:00 - KST 1954 Mar 21
1306 8:00 ROK K%sT 1961 Aug 10
1309 Zone Asia/Pyongyang 8:23:00 - LMT 1890
1313 9:00 - KST 1954 Mar 21
1314 8:00 - KST 1961 Aug 10
1317 ###############################################################################
1320 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1321 # From the Arab Times (2007-03-14):
1322 # The Civil Service Commission (CSC) has approved a proposal forwarded
1323 # by MP Ahmad Baqer on implementing the daylight saving time (DST) in
1324 # Kuwait starting from April until the end of Sept this year, reports Al-Anba.
1325 # <http://www.arabtimesonline.com/arabtimes/kuwait/Viewdet.asp?ID=9950>.
1326 # From Paul Eggert (2007-03-29):
1327 # We don't know the details, or whether the approval means it'll happen,
1328 # so for now we assume no DST.
1329 Zone Asia/Kuwait 3:11:56 - LMT 1950
1333 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1334 Zone Asia/Vientiane 6:50:24 - LMT 1906 Jun 9 # or Viangchan
1335 7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
1341 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1342 Rule Lebanon 1920 only - Mar 28 0:00 1:00 S
1343 Rule Lebanon 1920 only - Oct 25 0:00 0 -
1344 Rule Lebanon 1921 only - Apr 3 0:00 1:00 S
1345 Rule Lebanon 1921 only - Oct 3 0:00 0 -
1346 Rule Lebanon 1922 only - Mar 26 0:00 1:00 S
1347 Rule Lebanon 1922 only - Oct 8 0:00 0 -
1348 Rule Lebanon 1923 only - Apr 22 0:00 1:00 S
1349 Rule Lebanon 1923 only - Sep 16 0:00 0 -
1350 Rule Lebanon 1957 1961 - May 1 0:00 1:00 S
1351 Rule Lebanon 1957 1961 - Oct 1 0:00 0 -
1352 Rule Lebanon 1972 only - Jun 22 0:00 1:00 S
1353 Rule Lebanon 1972 1977 - Oct 1 0:00 0 -
1354 Rule Lebanon 1973 1977 - May 1 0:00 1:00 S
1355 Rule Lebanon 1978 only - Apr 30 0:00 1:00 S
1356 Rule Lebanon 1978 only - Sep 30 0:00 0 -
1357 Rule Lebanon 1984 1987 - May 1 0:00 1:00 S
1358 Rule Lebanon 1984 1991 - Oct 16 0:00 0 -
1359 Rule Lebanon 1988 only - Jun 1 0:00 1:00 S
1360 Rule Lebanon 1989 only - May 10 0:00 1:00 S
1361 Rule Lebanon 1990 1992 - May 1 0:00 1:00 S
1362 Rule Lebanon 1992 only - Oct 4 0:00 0 -
1363 Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S
1364 Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 -
1365 Rule Lebanon 1999 max - Oct lastSun 0:00 0 -
1366 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1367 Zone Asia/Beirut 2:22:00 - LMT 1880
1371 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1372 Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 TS # one-Third Summer
1373 Rule NBorneo 1935 1941 - Dec 14 0:00 0 -
1375 # peninsular Malaysia
1376 # The data here are taken from Mok Ly Yng (2003-10-30)
1377 # <http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html>.
1378 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1379 Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1
1380 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
1381 7:00 - MALT 1933 Jan 1 # Malaya Time
1382 7:00 0:20 MALST 1936 Jan 1
1383 7:20 - MALT 1941 Sep 1
1384 7:30 - MALT 1942 Feb 16
1385 9:00 - JST 1945 Sep 12
1386 7:30 - MALT 1982 Jan 1
1387 8:00 - MYT # Malaysia Time
1389 # From Paul Eggert (2006-03-22):
1390 # The data here are mostly from Shanks & Pottenger, but the 1942, 1945 and 1982
1391 # transition dates are from Mok Ly Yng.
1392 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1393 Zone Asia/Kuching 7:21:20 - LMT 1926 Mar
1394 7:30 - BORT 1933 # Borneo Time
1395 8:00 NBorneo BOR%sT 1942 Feb 16
1396 9:00 - JST 1945 Sep 12
1397 8:00 - BORT 1982 Jan 1
1401 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1402 Zone Indian/Maldives 4:54:00 - LMT 1880 # Male
1403 4:54:00 - MMT 1960 # Male Mean Time
1404 5:00 - MVT # Maldives Time
1408 # Shanks & Pottenger say that Mongolia has three time zones, but
1409 # usno1995 and the CIA map Standard Time Zones of the World (2005-03)
1410 # both say that it has just one.
1412 # From Oscar van Vlijmen (1999-12-11):
1413 # <a href="http://www.mongoliatourism.gov.mn/general.htm">
1414 # General Information Mongolia
1416 # "Time: Mongolia has two time zones. Three westernmost provinces of
1417 # Bayan-Ulgii, Uvs, and Hovd are one hour earlier than the capital city, and
1418 # the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus
1421 # From Rives McDow (1999-12-13):
1422 # Mongolia discontinued the use of daylight savings time in 1999; 1998
1423 # being the last year it was implemented. The dates of implementation I am
1424 # unsure of, but most probably it was similar to Russia, except for the time
1425 # of implementation may have been different....
1426 # Some maps in the past have indicated that there was an additional time
1427 # zone in the eastern part of Mongolia, including the provinces of Dornod,
1428 # Suhbaatar, and possibly Khentij.
1430 # From Paul Eggert (1999-12-15):
1431 # Naming and spelling is tricky in Mongolia.
1432 # We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone;
1433 # the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us,
1434 # and sometimes Jirgalanta (with variant spellings), but the name Hovd
1435 # is good enough for our purposes.
1437 # From Rives McDow (2001-05-13):
1438 # In addition to Mongolia starting daylight savings as reported earlier
1439 # (adopted DST on 2001-04-27 02:00 local time, ending 2001-09-28),
1440 # there are three time zones.
1442 # Provinces [at 7:00]: Bayan-ulgii, Uvs, Khovd, Zavkhan, Govi-Altai
1443 # Provinces [at 8:00]: Khovsgol, Bulgan, Arkhangai, Khentii, Tov,
1444 # Bayankhongor, Ovorkhangai, Dundgovi, Dornogovi, Omnogovi
1445 # Provinces [at 9:00]: Dornod, Sukhbaatar
1447 # [The province of Selenge is omitted from the above lists.]
1449 # From Ganbold Ts., Ulaanbaatar (2004-04-17):
1450 # Daylight saving occurs at 02:00 local time last Saturday of March.
1451 # It will change back to normal at 02:00 local time last Saturday of
1452 # September.... As I remember this rule was changed in 2001.
1454 # From Paul Eggert (2004-04-17):
1455 # For now, assume Rives McDow's informant got confused about Friday vs
1456 # Saturday, and that his 2001 dates should have 1 added to them.
1458 # From Paul Eggert (2005-07-26):
1459 # We have wildly conflicting information about Mongolia's time zones.
1460 # Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says
1461 # there is only one time zone and that DST is observed, citing Microsoft
1462 # Windows XP as the source. Risto Nykanen (2005-05-16) reports that
1463 # travelmongolia.org says there are two time zones (UTC+7, UTC+8) with no DST.
1464 # Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in
1465 # Washington, DC says there are two time zones, with DST observed.
1467 # <http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1&>
1468 # which also says that there is DST, and which has a comment by "Toddius"
1469 # (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones.
1470 # The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT
1471 # and some Eastern provinces are +9 GMT but Sukhbaatar Aimag is SUHK +8.5 GMT.
1472 # The SUKH timezone is new this year, it is one of the few things the
1473 # parliament passed during the tumultuous winter session."
1474 # For now, let's ignore this information, until we have more confirmation.
1476 # From Ganbold Ts. (2007-02-26):
1477 # Parliament of Mongolia has just changed the daylight-saving rule in February.
1478 # They decided not to adopt daylight-saving time....
1479 # http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742
1481 # From Deborah Goldsmith (2008-03-30):
1482 # We received a bug report claiming that the tz database UTC offset for
1483 # Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT
1484 # +08:00 instead. Different sources appear to disagree with the tz
1485 # database on this, e.g.:
1487 # <a href="http://www.timeanddate.com/worldclock/city.html?n=1026">
1488 # http://www.timeanddate.com/worldclock/city.html?n=1026
1490 # <a href="http://www.worldtimeserver.com/current_time_in_MN.aspx">
1491 # http://www.worldtimeserver.com/current_time_in_MN.aspx
1494 # both say GMT+08:00.
1496 # From Steffen Thorsen (2008-03-31):
1497 # eznis airways, which operates several domestic flights, has a flight
1499 # <a href="http://www.eznis.com/Container.jsp?id=112">
1500 # http://www.eznis.com/Container.jsp?id=112
1502 # (click the English flag for English)
1504 # There it appears that flights between Choibalsan and Ulaanbatar arrive
1505 # about 1:35 - 1:50 hours later in local clock time, no matter the
1506 # direction, while Ulaanbaatar-Khvod takes 2 hours in the Eastern
1507 # direction and 3:35 back, which indicates that Ulaanbatar and Khvod are
1508 # in different time zones (like we know about), while Choibalsan and
1509 # Ulaanbatar are in the same time zone (correction needed).
1511 # From Arthur David Olson (2008-05-19):
1512 # Assume that Choibalsan is indeed offset by 8:00.
1513 # XXX--in the absence of better information, assume that transition
1514 # was at the start of 2008-03-31 (the day of Steffen Thorsen's report);
1515 # this is almost surely wrong.
1517 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1518 Rule Mongol 1983 1984 - Apr 1 0:00 1:00 S
1519 Rule Mongol 1983 only - Oct 1 0:00 0 -
1520 # Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00,
1521 # but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM
1522 # (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998.
1524 # Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches
1525 # in Choibalsan (more precisely, in Dornod and Sukhbaatar) took place
1526 # at 02:00 standard time, not at 00:00 local time as in the rest of
1527 # the country. That would be odd, and possibly is a result of their
1528 # correction of 02:00 (in the previous edition) not being done correctly
1529 # in the latest edition; so ignore it for now.
1531 Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 S
1532 Rule Mongol 1984 1998 - Sep lastSun 0:00 0 -
1533 # IATA SSIM (1999-09) says Mongolia no longer observes DST.
1534 Rule Mongol 2001 only - Apr lastSat 2:00 1:00 S
1535 Rule Mongol 2001 2006 - Sep lastSat 2:00 0 -
1536 Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 S
1538 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1539 # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta
1540 Zone Asia/Hovd 6:06:36 - LMT 1905 Aug
1541 6:00 - HOVT 1978 # Hovd Time
1543 # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga
1544 Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug
1545 7:00 - ULAT 1978 # Ulaanbaatar Time
1547 # Choibalsan, a.k.a. Bajan Tuemen, Bajan Tumen, Chojbalsan,
1548 # Choybalsan, Sanbejse, Tchoibalsan
1549 Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug
1551 8:00 - ULAT 1983 Apr
1552 9:00 Mongol CHO%sT 2008 Mar 31 # Choibalsan Time
1556 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1557 Zone Asia/Kathmandu 5:41:16 - LMT 1920
1559 5:45 - NPT # Nepal Time
1562 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1563 Zone Asia/Muscat 3:54:20 - LMT 1920
1568 # From Rives McDow (2002-03-13):
1569 # I have been advised that Pakistan has decided to adopt dst on a
1570 # TRIAL basis for one year, starting 00:01 local time on April 7, 2002
1571 # and ending at 00:01 local time October 6, 2002. This is what I was
1572 # told, but I believe that the actual time of change may be 00:00; the
1573 # 00:01 was to make it clear which day it was on.
1575 # From Paul Eggert (2002-03-15):
1576 # Jesper Norgaard found this URL:
1577 # http://www.pak.gov.pk/public/news/app/app06_dec.htm
1578 # (dated 2001-12-06) which says that the Cabinet adopted a scheme "to
1579 # advance the clocks by one hour on the night between the first
1580 # Saturday and Sunday of April and revert to the original position on
1581 # 15th October each year". This agrees with McDow's 04-07 at 00:00,
1582 # but disagrees about the October transition, and makes it sound like
1583 # it's not on a trial basis. Also, the "between the first Saturday
1584 # and Sunday of April" phrase, if taken literally, means that the
1585 # transition takes place at 00:00 on the first Sunday on or after 04-02.
1587 # From Paul Eggert (2003-02-09):
1588 # DAWN <http://www.dawn.com/2002/10/06/top13.htm> reported on 2002-10-05
1589 # that 2002 DST ended that day at midnight. Go with McDow for now.
1591 # From Steffen Thorsen (2003-03-14):
1592 # According to http://www.dawn.com/2003/03/07/top15.htm
1593 # there will be no DST in Pakistan this year:
1595 # ISLAMABAD, March 6: Information and Media Development Minister Sheikh
1596 # Rashid Ahmed on Thursday said the cabinet had reversed a previous
1597 # decision to advance clocks by one hour in summer and put them back by
1598 # one hour in winter with the aim of saving light hours and energy.
1600 # The minister told a news conference that the experiment had rather
1601 # shown 8 per cent higher consumption of electricity.
1603 # From Alex Krivenyshev (2008-05-15):
1605 # Here is an article that Pakistan plan to introduce Daylight Saving Time
1606 # on June 1, 2008 for 3 months.
1608 # "... The federal cabinet on Wednesday announced a new conservation plan to help
1609 # reduce load shedding by approving the closure of commercial centres at 9pm and
1610 # moving clocks forward by one hour for the next three months.
1613 # <a href="http://www.worldtimezone.net/dst_news/dst_news_pakistan01.html">
1614 # http://www.worldtimezone.net/dst_news/dst_news_pakistan01.html
1617 # <a href="http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4">
1618 # http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4
1621 # From Arthur David Olson (2008-05-19):
1622 # XXX--midnight transitions is a guess; 2008 only is a guess.
1624 # From Alexander Krivenyshev (2008-08-28):
1625 # Pakistan government has decided to keep the watches one-hour advanced
1626 # for another 2 months--plan to return to Standard Time on October 31
1627 # instead of August 31.
1629 # <a href="http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html">
1630 # http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html
1633 # <a href="http://dailymailnews.com/200808/28/news/dmbrn03.html">
1634 # http://dailymailnews.com/200808/28/news/dmbrn03.html
1637 # From Alexander Krivenyshev (2009-04-08):
1638 # Based on previous media reports that "... proposed plan to
1639 # advance clocks by one hour from May 1 will cause disturbance
1640 # to the working schedules rather than bringing discipline in
1641 # official working."
1642 # <a href="http://www.thenews.com.pk/daily_detail.asp?id=171280">
1643 # http://www.thenews.com.pk/daily_detail.asp?id=171280
1646 # recent news that instead of May 2009 - Pakistan plan to
1647 # introduce DST from April 15, 2009
1649 # FYI: Associated Press Of Pakistan
1651 # Cabinet okays proposal to advance clocks by one hour from April 15
1652 # <a href="http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=73043&Itemid=1">
1653 # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=73043&Itemid=1
1658 # <a href="http://www.worldtimezone.com/dst_news/dst_news_pakistan05.html">
1659 # http://www.worldtimezone.com/dst_news/dst_news_pakistan05.html
1663 # The Federal Cabinet on Wednesday approved the proposal to
1664 # advance clocks in the country by one hour from April 15 to
1667 # From Arthur David Olson (2009-04-10):
1668 # Assume for now that Pakistan will end DST in 2009 as it did in 2008.
1670 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1671 Rule Pakistan 2002 only - Apr Sun>=2 0:01 1:00 S
1672 Rule Pakistan 2002 only - Oct Sun>=2 0:01 0 -
1673 Rule Pakistan 2008 only - Jun 1 0:00 1:00 S
1674 Rule Pakistan 2008 only - Nov 1 0:00 0 -
1675 Rule Pakistan 2009 only - Apr 15 0:00 1:00 S
1676 Rule Pakistan 2009 only - Nov 1 0:00 0 -
1677 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1678 Zone Asia/Karachi 4:28:12 - LMT 1907
1680 5:30 1:00 IST 1945 Oct 15
1681 5:30 - IST 1951 Sep 30
1682 5:00 - KART 1971 Mar 26 # Karachi Time
1683 5:00 Pakistan PK%sT # Pakistan Time
1687 # From Amos Shapir (1998-02-15):
1689 # From 1917 until 1948-05-15, all of Palestine, including the parts now
1690 # known as the Gaza Strip and the West Bank, was under British rule.
1691 # Therefore the rules given for Israel for that period, apply there too...
1693 # The Gaza Strip was under Egyptian rule between 1948-05-15 until 1967-06-05
1694 # (except a short occupation by Israel from 1956-11 till 1957-03, but no
1695 # time zone was affected then). It was never formally annexed to Egypt,
1698 # The rest of Palestine was under Jordanian rule at that time, formally
1699 # annexed in 1950 as the West Bank (and the word "Trans" was dropped from
1700 # the country's previous name of "the Hashemite Kingdom of the
1701 # Trans-Jordan"). So the rules for Jordan for that time apply. Major
1702 # towns in that area are Nablus (Shchem), El-Halil (Hebron), Ramallah, and
1705 # Both areas were occupied by Israel in June 1967, but not annexed (except
1706 # for East Jerusalem). They were on Israel time since then; there might
1707 # have been a Military Governor's order about time zones, but I'm not aware
1708 # of any (such orders may have been issued semi-annually whenever summer
1709 # time was in effect, but maybe the legal aspect of time was just neglected).
1711 # The Palestinian Authority was established in 1993, and got hold of most
1712 # towns in the West Bank and Gaza by 1995. I know that in order to
1713 # demonstrate...independence, they have been switching to
1714 # summer time and back on a different schedule than Israel's, but I don't
1715 # know when this was started, or what algorithm is used (most likely the
1718 # To summarize, the table should probably look something like that:
1720 # Area \ when | 1918-1947 | 1948-1967 | 1967-1995 | 1996-
1721 # ------------+-----------+-----------+-----------+-----------
1722 # Israel | Zion | Zion | Zion | Zion
1723 # West bank | Zion | Jordan | Zion | Jordan
1724 # Gaza | Zion | Egypt | Zion | Jordan
1726 # I guess more info may be available from the PA's web page (if/when they
1729 # From Paul Eggert (2006-03-22):
1730 # Shanks & Pottenger write that Gaza did not observe DST until 1957, but go
1731 # with Shapir and assume that it observed DST from 1940 through 1947,
1732 # and that it used Jordanian rules starting in 1996.
1733 # We don't yet need a separate entry for the West Bank, since
1734 # the only differences between it and Gaza that we know about
1735 # occurred before our cutoff date of 1970.
1736 # However, as we get more information, we may need to add entries
1737 # for parts of the West Bank as they transitioned from Israel's rules
1738 # to Palestine's rules. If you have more info about this, please
1739 # send it to tz@elsie.nci.nih.gov for incorporation into future editions.
1741 # From IINS News Service - Israel - 1998-03-23 10:38:07 Israel time,
1742 # forwarded by Ephraim Silverberg:
1744 # Despite the fact that Israel changed over to daylight savings time
1745 # last week, the PLO Authority (PA) has decided not to turn its clocks
1746 # one-hour forward at this time. As a sign of independence from Israeli rule,
1747 # the PA has decided to implement DST in April.
1749 # From Paul Eggert (1999-09-20):
1750 # Daoud Kuttab writes in
1751 # <a href="http://www.jpost.com/com/Archive/22.Apr.1999/Opinion/Article-2.html">
1753 # </a> (Jerusalem Post, 1999-04-22) that
1754 # the Palestinian National Authority changed to DST on 1999-04-15.
1755 # I vaguely recall that they switch back in October (sorry, forgot the source).
1756 # For now, let's assume that the spring switch was at 24:00,
1757 # and that they switch at 0:00 on the 3rd Fridays of April and October.
1759 # From Paul Eggert (2005-11-22):
1760 # Starting 2004 transitions are from Steffen Thorsen's web site timeanddate.com.
1762 # From Steffen Thorsen (2005-11-23):
1763 # A user from Gaza reported that Gaza made the change early because of
1764 # the Ramadan. Next year Ramadan will be even earlier, so I think
1765 # there is a good chance next year's end date will be around two weeks
1766 # earlier--the same goes for Jordan.
1768 # From Steffen Thorsen (2006-08-17):
1769 # I was informed by a user in Bethlehem that in Bethlehem it started the
1770 # same day as Israel, and after checking with other users in the area, I
1771 # was informed that they started DST one day after Israel. I was not
1772 # able to find any authoritative sources at the time, nor details if
1773 # Gaza changed as well, but presumed Gaza to follow the same rules as
1776 # From Steffen Thorsen (2006-09-26):
1777 # according to the Palestine News Network (2006-09-19):
1778 # http://english.pnn.ps/index.php?option=com_content&task=view&id=596&Itemid=5
1779 # > The Council of Ministers announced that this year its winter schedule
1780 # > will begin early, as of midnight Thursday. It is also time to turn
1781 # > back the clocks for winter. Friday will begin an hour late this week.
1782 # I guess it is likely that next year's date will be moved as well,
1783 # because of the Ramadan.
1785 # From Jesper Norgaard Welen (2007-09-18):
1786 # According to Steffen Thorsen's web site the Gaza Strip and the rest of the
1787 # Palestinian territories left DST early on 13.th. of September at 2:00.
1789 # From Paul Eggert (2007-09-20):
1790 # My understanding is that Gaza and the West Bank disagree even over when
1791 # the weekend is (Thursday+Friday versus Friday+Saturday), so I'd be a bit
1792 # surprised if they agreed about DST. But for now, assume they agree.
1793 # For lack of better information, predict that future changes will be
1794 # the 2nd Thursday of September at 02:00.
1796 # From Alexander Krivenyshev (2008-08-28):
1797 # Here is an article, that Mideast running on different clocks at Ramadan.
1799 # Gaza Strip (as Egypt) ended DST at midnight Thursday (Aug 28, 2008), while
1800 # the West Bank will end Daylight Saving Time at midnight Sunday (Aug 31, 2008).
1802 # <a href="http://www.guardian.co.uk/world/feedarticle/7759001">
1803 # http://www.guardian.co.uk/world/feedarticle/7759001
1805 # <a href="http://www.abcnews.go.com/International/wireStory?id=5676087">
1806 # http://www.abcnews.go.com/International/wireStory?id=5676087
1809 # <a href="http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html">
1810 # http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html
1813 # From Alexander Krivenyshev (2009-03-26):
1814 # According to the Palestine News Network (arabic.pnn.ps), Palestinian
1815 # government decided to start Daylight Time on Thursday night March
1816 # 26 and continue until the night of 27 September 2009.
1819 # <a href="http://arabic.pnn.ps/index.php?option=com_content&task=view&id=50850">
1820 # http://arabic.pnn.ps/index.php?option=com_content&task=view&id=50850
1824 # (English translation)
1825 # <a href="http://www.worldtimezone.com/dst_news/dst_news_westbank01.html">
1826 # http://www.worldtimezone.com/dst_news/dst_news_westbank01.html
1829 # The rules for Egypt are stolen from the `africa' file.
1830 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1831 Rule EgyptAsia 1957 only - May 10 0:00 1:00 S
1832 Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 -
1833 Rule EgyptAsia 1958 only - May 1 0:00 1:00 S
1834 Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S
1835 Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 -
1836 Rule EgyptAsia 1966 only - Oct 1 3:00 0 -
1838 Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S
1839 Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 -
1840 Rule Palestine 2004 only - Oct 1 1:00 0 -
1841 Rule Palestine 2005 only - Oct 4 2:00 0 -
1842 Rule Palestine 2006 2008 - Apr 1 0:00 1:00 S
1843 Rule Palestine 2006 only - Sep 22 0:00 0 -
1844 Rule Palestine 2007 only - Sep Thu>=8 2:00 0 -
1845 Rule Palestine 2008 only - Aug lastFri 2:00 0 -
1846 Rule Palestine 2009 max - Mar lastFri 0:00 1:00 S
1847 Rule Palestine 2009 max - Sep lastMon 2:00 0 -
1849 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1850 Zone Asia/Gaza 2:17:52 - LMT 1900 Oct
1851 2:00 Zion EET 1948 May 15
1852 2:00 EgyptAsia EE%sT 1967 Jun 5
1854 2:00 Jordan EE%sT 1999
1855 2:00 Palestine EE%sT
1861 # On 1844-08-16, Narciso Claveria, governor-general of the
1862 # Philippines, issued a proclamation announcing that 1844-12-30 was to
1863 # be immediately followed by 1845-01-01. Robert H. van Gent has a
1864 # transcript of the decree in <http://www.phys.uu.nl/~vgent/idl/idl.htm>.
1865 # The rest of the data are from Shanks & Pottenger.
1867 # From Paul Eggert (2006-04-25):
1868 # Tomorrow's Manila Standard reports that the Philippines Department of
1869 # Trade and Industry is considering adopting DST this June when the
1870 # rainy season begins. See
1871 # <http://www.manilastandardtoday.com/?page=politics02_april26_2006>.
1872 # For now, we'll ignore this, since it's not definite and we lack details.
1874 # From Jesper Norgaard Welen (2006-04-26):
1875 # ... claims that Philippines had DST last time in 1990:
1876 # http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/
1877 # [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires,
1880 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1881 Rule Phil 1936 only - Nov 1 0:00 1:00 S
1882 Rule Phil 1937 only - Feb 1 0:00 0 -
1883 Rule Phil 1954 only - Apr 12 0:00 1:00 S
1884 Rule Phil 1954 only - Jul 1 0:00 0 -
1885 Rule Phil 1978 only - Mar 22 0:00 1:00 S
1886 Rule Phil 1978 only - Sep 21 0:00 0 -
1887 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1888 Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31
1889 8:04:00 - LMT 1899 May 11
1890 8:00 Phil PH%sT 1942 May
1895 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1896 Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha
1901 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1902 Zone Asia/Riyadh 3:06:52 - LMT 1950
1906 # The data here are taken from Mok Ly Yng (2003-10-30)
1907 # <http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html>.
1908 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1909 Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1
1910 6:55:25 - SMT 1905 Jun 1 # Singapore M.T.
1911 7:00 - MALT 1933 Jan 1 # Malaya Time
1912 7:00 0:20 MALST 1936 Jan 1
1913 7:20 - MALT 1941 Sep 1
1914 7:30 - MALT 1942 Feb 16
1915 9:00 - JST 1945 Sep 12
1916 7:30 - MALT 1965 Aug 9 # independence
1917 7:30 - SGT 1982 Jan 1 # Singapore Time
1924 # From Paul Eggert (1996-09-03):
1925 # "Sri Lanka advances clock by an hour to avoid blackout"
1926 # (www.virtual-pc.com/lankaweb/news/items/240596-2.html, 1996-05-24,
1927 # no longer available as of 1999-08-17)
1928 # reported ``the country's standard time will be put forward by one hour at
1929 # midnight Friday (1830 GMT) `in the light of the present power crisis'.''
1931 # From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted
1933 # <a href="news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net">
1934 # Daily News - Hot News Section (1996-10-26)
1936 # With effect from 12.30 a.m. on 26th October 1996
1937 # Sri Lanka will be six (06) hours ahead of GMT.
1939 # From Jesper Norgaard Welen (2006-04-14), quoting Sri Lanka News Online
1940 # <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13):
1941 # 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes)
1942 # at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006).
1944 # From Peter Apps and Ranga Sirila of Reuters (2006-04-12) in:
1945 # <http://today.reuters.co.uk/news/newsArticle.aspx?type=scienceNews&storyID=2006-04-12T172228Z_01_COL295762_RTRIDST_0_SCIENCE-SRILANKA-TIME-DC.XML>
1946 # [The Tamil Tigers] never accepted the original 1996 time change and simply
1947 # kept their clocks set five and a half hours ahead of Greenwich Mean
1948 # Time (GMT), in line with neighbor India.
1949 # From Paul Eggert (2006-04-18):
1950 # People who live in regions under Tamil control can use [TZ='Asia/Kolkata'],
1951 # as that zone has agreed with the Tamil areas since our cutoff date of 1970.
1953 # From K Sethu (2006-04-25):
1954 # I think the abbreviation LKT originated from the world of computers at
1955 # the time of or subsequent to the time zone changes by SL Government
1956 # twice in 1996 and probably SL Government or its standardization
1957 # agencies never declared an abbreviation as a national standard.
1959 # I recollect before the recent change the government annoucemments
1960 # mentioning it as simply changing Sri Lanka Standard Time or Sri Lanka
1961 # Time and no mention was made about the abbreviation.
1963 # If we look at Sri Lanka Department of Government's "Official News
1964 # Website of Sri Lanka" ... http://www.news.lk/ we can see that they
1965 # use SLT as abbreviation in time stamp at the beginning of each news
1968 # Within Sri Lanka I think LKT is well known among computer users and
1969 # adminsitrators. In my opinion SLT may not be a good choice because the
1970 # nation's largest telcom / internet operator Sri Lanka Telcom is well
1971 # known by that abbreviation - simply as SLT (there IP domains are
1972 # slt.lk and sltnet.lk).
1974 # But if indeed our government has adopted SLT as standard abbreviation
1975 # (that we have not known so far) then it is better that it be used for
1978 # From Paul Eggert (2006-04-25):
1979 # One possibility is that we wait for a bit for the dust to settle down
1980 # and then see what people actually say in practice.
1982 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
1983 Zone Asia/Colombo 5:19:24 - LMT 1880
1984 5:19:32 - MMT 1906 # Moratuwa Mean Time
1985 5:30 - IST 1942 Jan 5
1986 5:30 0:30 IHST 1942 Sep
1987 5:30 1:00 IST 1945 Oct 16 2:00
1988 5:30 - IST 1996 May 25 0:00
1989 6:30 - LKT 1996 Oct 26 0:30
1990 6:00 - LKT 2006 Apr 15 0:30
1994 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1995 Rule Syria 1920 1923 - Apr Sun>=15 2:00 1:00 S
1996 Rule Syria 1920 1923 - Oct Sun>=1 2:00 0 -
1997 Rule Syria 1962 only - Apr 29 2:00 1:00 S
1998 Rule Syria 1962 only - Oct 1 2:00 0 -
1999 Rule Syria 1963 1965 - May 1 2:00 1:00 S
2000 Rule Syria 1963 only - Sep 30 2:00 0 -
2001 Rule Syria 1964 only - Oct 1 2:00 0 -
2002 Rule Syria 1965 only - Sep 30 2:00 0 -
2003 Rule Syria 1966 only - Apr 24 2:00 1:00 S
2004 Rule Syria 1966 1976 - Oct 1 2:00 0 -
2005 Rule Syria 1967 1978 - May 1 2:00 1:00 S
2006 Rule Syria 1977 1978 - Sep 1 2:00 0 -
2007 Rule Syria 1983 1984 - Apr 9 2:00 1:00 S
2008 Rule Syria 1983 1984 - Oct 1 2:00 0 -
2009 Rule Syria 1986 only - Feb 16 2:00 1:00 S
2010 Rule Syria 1986 only - Oct 9 2:00 0 -
2011 Rule Syria 1987 only - Mar 1 2:00 1:00 S
2012 Rule Syria 1987 1988 - Oct 31 2:00 0 -
2013 Rule Syria 1988 only - Mar 15 2:00 1:00 S
2014 Rule Syria 1989 only - Mar 31 2:00 1:00 S
2015 Rule Syria 1989 only - Oct 1 2:00 0 -
2016 Rule Syria 1990 only - Apr 1 2:00 1:00 S
2017 Rule Syria 1990 only - Sep 30 2:00 0 -
2018 Rule Syria 1991 only - Apr 1 0:00 1:00 S
2019 Rule Syria 1991 1992 - Oct 1 0:00 0 -
2020 Rule Syria 1992 only - Apr 8 0:00 1:00 S
2021 Rule Syria 1993 only - Mar 26 0:00 1:00 S
2022 Rule Syria 1993 only - Sep 25 0:00 0 -
2023 # IATA SSIM (1998-02) says 1998-04-02;
2024 # (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02,
2025 # 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31;
2026 # (2006) says 2006-03-31 and 2006-09-22;
2027 # for now ignore all these claims and go with Shanks & Pottenger,
2028 # except for the 2006-09-22 claim (which seems right for Ramadan).
2029 Rule Syria 1994 1996 - Apr 1 0:00 1:00 S
2030 Rule Syria 1994 2005 - Oct 1 0:00 0 -
2031 Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S
2032 Rule Syria 1999 2006 - Apr 1 0:00 1:00 S
2033 # From Stephen Colebourne (2006-09-18):
2034 # According to IATA data, Syria will change DST on 21st September [21:00 UTC]
2035 # this year [only].... This is probably related to Ramadan, like Egypt.
2036 Rule Syria 2006 only - Sep 22 0:00 0 -
2037 # From Paul Eggert (2007-03-29):
2038 # Today the AP reported "Syria will switch to summertime at midnight Thursday."
2039 # http://www.iht.com/articles/ap/2007/03/29/africa/ME-GEN-Syria-Time-Change.php
2040 Rule Syria 2007 only - Mar lastFri 0:00 1:00 S
2041 # From Jesper Norgard (2007-10-27):
2042 # The sister center ICARDA of my work CIMMYT is confirming that Syria DST will
2043 # not take place 1.st November at 0:00 o'clock but 1.st November at 24:00 or
2044 # rather Midnight between Thursday and Friday. This does make more sence than
2045 # having it between Wednesday and Thursday (two workdays in Syria) since the
2046 # weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now
2047 # it is implemented at midnight of the last workday before weekend...
2049 # From Steffen Thorsen (2007-10-27):
2050 # Jesper Norgaard Welen wrote:
2052 # > "Winter local time in Syria will be observed at midnight of Thursday 1
2053 # > November 2007, and the clock will be put back 1 hour."
2055 # I found confirmation on this in this gov.sy-article (Arabic):
2056 # http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=12521710520070926111247
2058 # which using Google's translate tools says:
2059 # Council of Ministers also approved the commencement of work on
2060 # identifying the winter time as of Friday, 2/11/2007 where the 60th
2061 # minute delay at midnight Thursday 1/11/2007.
2062 Rule Syria 2007 only - Nov Fri>=1 0:00 0 -
2064 # From Stephen Colebourne (2008-03-17):
2065 # For everyone's info, I saw an IATA time zone change for [Syria] for
2066 # this month (March 2008) in the last day or so...This is the data IATA
2068 # Country Time Standard --- DST Start --- --- DST End --- DST
2069 # Name Zone Variation Time Date Time Date
2072 # Republic SY +0200 2200 03APR08 2100 30SEP08 +0300
2073 # 2200 02APR09 2100 30SEP09 +0300
2074 # 2200 01APR10 2100 30SEP10 +0300
2076 # From Arthur David Olson (2008-03-17):
2077 # Here's a link to English-language coverage by the Syrian Arab News
2079 # <a href="http://www.sana.sy/eng/21/2008/03/11/165173.htm">
2080 # http://www.sana.sy/eng/21/2008/03/11/165173.htm
2081 # </a>...which reads (in part) "The Cabinet approved the suggestion of the
2082 # Ministry of Electricity to begin daylight savings time on Friday April
2083 # 4th, advancing clocks one hour ahead on midnight of Thursday April 3rd."
2084 # Since Syria is two hours east of UTC, the 2200 and 2100 transition times
2085 # shown above match up with midnight in Syria.
2087 # From Arthur David Olson (2008-03-18):
2088 # My buest guess at a Syrian rule is "the Friday nearest April 1";
2089 # coding that involves either using a "Mar Fri>=29" construct that old time zone
2090 # compilers can't handle or having multiple Rules (a la Israel).
2091 # For now, use "Apr Fri>=1", and go with IATA on a uniform Sep 30 end.
2093 # From Steffen Thorsen (2008-10-07):
2094 # Syria has now officially decided to end DST on 2008-11-01 this year,
2095 # according to the following article in the Syrian Arab News Agency (SANA).
2097 # The article is in Arabic, and seems to tell that they will go back to
2098 # winter time on 2008-11-01 at 00:00 local daylight time (delaying/setting
2099 # clocks back 60 minutes).
2101 # <a href="http://sana.sy/ara/2/2008/10/07/195459.htm">
2102 # http://sana.sy/ara/2/2008/10/07/195459.htm
2105 # From Steffen Thorsen (2009-03-19):
2106 # Syria will start DST on 2009-03-27 00:00 this year according to many sources,
2109 # <a href="http://www.sana.sy/eng/21/2009/03/17/217563.htm">
2110 # http://www.sana.sy/eng/21/2009/03/17/217563.htm
2112 # (English, Syrian Arab News # Agency)
2113 # <a href="http://thawra.alwehda.gov.sy/_View_news2.asp?FileName=94459258720090318012209">
2114 # http://thawra.alwehda.gov.sy/_View_news2.asp?FileName=94459258720090318012209
2116 # (Arabic, gov-site)
2118 # We have not found any sources saying anything about when DST ends this year.
2121 # <a href="http://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html">
2122 # http://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html
2125 Rule Syria 2008 only - Apr Fri>=1 0:00 1:00 S
2126 Rule Syria 2008 max - Nov 1 0:00 0 -
2127 Rule Syria 2009 max - Mar lastFri 0:00 1:00 S
2129 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2130 Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq
2134 # From Shanks & Pottenger.
2135 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2136 Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2
2137 5:00 - DUST 1930 Jun 21 # Dushanbe Time
2138 6:00 RussiaAsia DUS%sT 1991 Mar 31 2:00s
2139 5:00 1:00 DUSST 1991 Sep 9 2:00s
2140 5:00 - TJT # Tajikistan Time
2143 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2144 Zone Asia/Bangkok 6:42:04 - LMT 1880
2145 6:42:04 - BMT 1920 Apr # Bangkok Mean Time
2149 # From Shanks & Pottenger.
2150 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2151 Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad
2152 4:00 - ASHT 1930 Jun 21 # Ashkhabad Time
2153 5:00 RussiaAsia ASH%sT 1991 Mar 31 2:00
2154 4:00 RussiaAsia ASH%sT 1991 Oct 27 # independence
2155 4:00 RussiaAsia TM%sT 1992 Jan 19 2:00
2158 # United Arab Emirates
2159 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2160 Zone Asia/Dubai 3:41:12 - LMT 1920
2164 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2165 Zone Asia/Samarkand 4:27:12 - LMT 1924 May 2
2166 4:00 - SAMT 1930 Jun 21 # Samarkand Time
2167 5:00 - SAMT 1981 Apr 1
2168 5:00 1:00 SAMST 1981 Oct 1
2169 6:00 - TAST 1982 Apr 1 # Tashkent Time
2170 5:00 RussiaAsia SAM%sT 1991 Sep 1 # independence
2171 5:00 RussiaAsia UZ%sT 1992
2173 Zone Asia/Tashkent 4:37:12 - LMT 1924 May 2
2174 5:00 - TAST 1930 Jun 21 # Tashkent Time
2175 6:00 RussiaAsia TAS%sT 1991 Mar 31 2:00
2176 5:00 RussiaAsia TAS%sT 1991 Sep 1 # independence
2177 5:00 RussiaAsia UZ%sT 1992
2182 # From Arthur David Olson (2008-03-18):
2183 # The English-language name of Vietnam's most populous city is "Ho Chi Min City";
2184 # we use Ho_Chi_Minh below to avoid a name of more than 14 characters.
2186 # From Shanks & Pottenger:
2187 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2188 Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jun 9
2189 7:06:20 - SMT 1911 Mar 11 0:01 # Saigon MT?
2195 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
2196 Zone Asia/Aden 3:00:48 - LMT 1950
projects / dragonfly.git / blob