1 # Zones that go back beyond the scope of the tz database
3 # This file is in the public domain.
5 # This file is by no means authoritative; if you think you know
6 # better, go ahead and edit it (and please send any changes to
7 # tz@iana.org for general use in the future). For more, please see
8 # the file CONTRIBUTING in the tz distribution.
11 # From Paul Eggert (2014-08-12):
13 # This file contains data outside the normal scope of the tz database,
14 # in that its zones do not differ from normal tz zones after 1970.
15 # Links in this file point to zones in this file, superseding links in
16 # the file 'backward'.
18 # Although zones in this file may be of some use for analyzing
19 # pre-1970 time stamps, they are less reliable, cover only a tiny
20 # sliver of the pre-1970 era, and cannot feasibly be improved to cover
21 # most of the era. Because the zones are out of normal scope for the
22 # database, less effort is put into maintaining this file. Many of
23 # the zones were formerly in other source files, but were removed or
24 # replaced by links as their data entries were questionable and/or they
25 # differed from other zones only in pre-1970 time stamps.
27 # Unless otherwise specified, the source for the data is the following,
28 # which does not itself cite sources and is often wrong:
30 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
31 # San Diego: ACS Publications, Inc. (2003).
33 # This file is not intended to be compiled standalone, as it
34 # assumes rules from other files. In the tz distribution, use
35 # 'make posix_packrat' to compile this file.
37 # Zones are sorted by zone name. Each zone is preceded by the
38 # name of the country that the zone is in, along with any other
39 # commentary and rules associated with the entry.
41 # As explained in the zic man page, the zone columns are:
42 # Zone NAME GMTOFF RULES FORMAT [UNTIL]
45 Zone Africa/Bamako -0:32:00 - LMT 1912
46 0:00 - GMT 1934 Feb 26
47 -1:00 - WAT 1960 Jun 20
50 # Central African Republic
51 Zone Africa/Bangui 1:14:20 - LMT 1912
55 Zone Africa/Banjul -1:06:36 - LMT 1912
56 -1:06:36 - BMT 1935 # Banjul Mean Time
61 Zone Africa/Blantyre 2:20:00 - LMT 1903 Mar
64 # Republic of the Congo
65 Zone Africa/Brazzaville 1:01:08 - LMT 1912
69 Zone Africa/Bujumbura 1:57:28 - LMT 1890
73 Zone Africa/Conakry -0:54:52 - LMT 1912
74 0:00 - GMT 1934 Feb 26
79 Zone Africa/Dakar -1:09:44 - LMT 1912
84 # Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger.
85 Zone Africa/Douala 0:38:48 - LMT 1912
88 # From Paul Eggert (2014-08-12):
89 # The following table is from Shanks & Pottenger, but it can't be right.
90 # Whitman gives Mar 31 - Aug 31 for 1931 on.
91 # The International Hydrographic Bulletin, 1932-33, p 63 says that
92 # Sierra Leone would advance its clocks by 20 minutes on 1933-10-01.
93 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
94 Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST
95 Rule SL 1935 1942 - Oct 1 0:00 0 WAT
96 Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST
97 Rule SL 1957 1962 - Sep 1 0:00 0 GMT
98 Zone Africa/Freetown -0:53:00 - LMT 1882
99 -0:53:00 - FMT 1913 Jun # Freetown Mean Time
104 # From Paul Eggert (2013-02-21):
105 # Milne says they were regulated by the Cape Town Signal in 1899;
106 # assume they switched to 2:00 when Cape Town did.
107 Zone Africa/Gaborone 1:43:40 - LMT 1885
109 2:00 - CAT 1943 Sep 19 2:00
110 2:00 1:00 CAST 1944 Mar 19 2:00
114 Zone Africa/Harare 2:04:12 - LMT 1903 Mar
118 Zone Africa/Juba 2:06:24 - LMT 1931
119 2:00 Sudan CA%sT 2000 Jan 15 12:00
123 Zone Africa/Kigali 2:00:16 - LMT 1935 Jun
126 # Democratic Republic of the Congo (west)
127 Zone Africa/Kinshasa 1:01:12 - LMT 1897 Nov 9
131 Zone Africa/Libreville 0:37:48 - LMT 1912
135 Zone Africa/Lome 0:04:52 - LMT 1893
140 # Shanks gives 1911-05-26 for the transition to WAT,
141 # evidently confusing the date of the Portuguese decree
142 # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
143 # with the date that it took effect, namely 1912-01-01.
145 Zone Africa/Luanda 0:52:56 - LMT 1892
146 0:52:04 - AOT 1912 Jan 1 # Angola Time
149 # Democratic Republic of the Congo (east)
150 Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9
154 Zone Africa/Lusaka 1:53:08 - LMT 1903 Mar
159 # Although Shanks says that Malabo switched from UTC to UTC+1 on 1963-12-15,
160 # a Google Books search says that London Calling, Issues 432-465 (1948), p 19,
161 # says that Spanish Guinea was at GMT+1 back then. The Shanks data entries
162 # are most likely wrong, but we have nothing better; use them here for now.
164 Zone Africa/Malabo 0:35:08 - LMT 1912
165 0:00 - GMT 1963 Dec 15
169 Zone Africa/Maseru 1:50:00 - LMT 1903 Mar
170 2:00 - SAST 1943 Sep 19 2:00
171 2:00 1:00 SAST 1944 Mar 19 2:00
175 Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar
179 Zone Africa/Niamey 0:08:28 - LMT 1912
180 -1:00 - WAT 1934 Feb 26
185 Zone Africa/Nouakchott -1:03:48 - LMT 1912
186 0:00 - GMT 1934 Feb 26
187 -1:00 - WAT 1960 Nov 28
191 Zone Africa/Ouagadougou -0:06:04 - LMT 1912
195 # Whitman says they switched to 1:00 in 1946, not 1934;
196 # go with Shanks & Pottenger.
197 Zone Africa/Porto-Novo 0:10:28 - LMT 1912 Jan 1
198 0:00 - GMT 1934 Feb 26
201 # São Tomé and PrÃncipe
202 Zone Africa/Sao_Tome 0:26:56 - LMT 1884
203 -0:36:32 - LMT 1912 # Lisbon Mean Time
207 Zone Africa/Timbuktu -0:12:04 - LMT 1912
211 Zone America/Anguilla -4:12:16 - LMT 1912 Mar 2
215 # The name "Comodoro Rivadavia" exceeds the 14-byte POSIX limit.
216 Zone America/Argentina/ComodRivadavia -4:30:00 - LMT 1894 Oct 31
217 -4:16:48 - CMT 1920 May
219 -4:00 Arg AR%sT 1969 Oct 5
220 -3:00 Arg AR%sT 1991 Mar 3
221 -4:00 - WART 1991 Oct 20
222 -3:00 Arg AR%sT 1999 Oct 3
223 -4:00 Arg AR%sT 2000 Mar 3
224 -3:00 - ART 2004 Jun 1
225 -4:00 - WART 2004 Jun 20
229 Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
230 -4:30 - ANT 1965 # Netherlands Antilles Time
234 Zone America/Coral_Harbour -5:32:40 - LMT 1884
235 -5:00 NT_YK E%sT 1946
239 Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
243 # See 'northamerica' for why this entry is here rather than there.
244 Zone America/Ensenada -7:46:28 - LMT 1922 Jan 1 0:13:32
245 -8:00 - PST 1927 Jun 10 23:00
246 -7:00 - MST 1930 Nov 16
248 -7:00 - MST 1949 Jan 14
253 Zone America/Grenada -4:07:00 - LMT 1911 Jul # St George's
257 Zone America/Guadeloupe -4:06:08 - LMT 1911 Jun 8 # Pointe-Ã -Pitre
261 # From Paul Eggert (2006-03-22):
262 # In 1995 volcanic eruptions forced evacuation of Plymouth, the capital.
263 # world.gazetteer.com says Cork Hill is the most populous location now.
264 Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill
268 # This entry was intended for the following areas, but has been superseded by
269 # more detailed zones.
270 # Santa Fe (SF), Entre RÃos (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
271 # Formosa (FM), La Pampa (LP), Chubut (CH)
272 Zone America/Rosario -4:02:40 - LMT 1894 Nov
273 -4:16:44 - CMT 1920 May
275 -4:00 Arg AR%sT 1969 Oct 5
276 -3:00 Arg AR%sT 1991 Jul
277 -3:00 - ART 1999 Oct 3 0:00
278 -4:00 Arg AR%sT 2000 Mar 3 0:00
282 Zone America/St_Kitts -4:10:52 - LMT 1912 Mar 2 # Basseterre
286 Zone America/St_Lucia -4:04:00 - LMT 1890 # Castries
287 -4:04:00 - CMT 1912 # Castries Mean Time
291 Zone America/St_Thomas -4:19:44 - LMT 1911 Jul # Charlotte Amalie
294 # St Vincent and the Grenadines
295 Zone America/St_Vincent -4:04:56 - LMT 1890 # Kingstown
296 -4:04:56 - KMT 1912 # Kingstown Mean Time
300 Zone America/Tortola -4:18:28 - LMT 1911 Jul # Road Town
303 # McMurdo, Ross Island, since 1955-12
304 Zone Antarctica/McMurdo 0 - zzz 1956
306 Link Antarctica/McMurdo Antarctica/South_Pole
310 # From Paul Eggert (2014-09-06):
311 # The 1876 Report of the Secretary of the [US] Navy, p 305 says that Madras
312 # civil time was 5:20:57.3.
314 # From Paul Eggert (2014-08-21):
315 # In tomorrow's The Hindu, Nitya Menon reports that India had two civil time
316 # zones starting in 1884, one in Bombay and one in Calcutta, and that railways
317 # used a third time zone based on Madras time (80 deg. 18'30" E). Also,
318 # in 1881 Bombay briefly switched to Madras time, but switched back. See:
319 # http://www.thehindu.com/news/cities/chennai/madras-375-when-madras-clocked-the-time/article6339393.ece
320 #Zone Asia/Chennai [not enough info to complete]
323 # Long-shu Time (probably due to Long and Shu being two names of that area)
324 # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
325 # most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
326 # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
327 # Yangchun, Yangjiang, Yu'nan, and Yunfu.
328 Zone Asia/Chongqing 7:06:20 - LMT 1928 # or Chungking
329 7:00 - LONT 1980 May # Long-shu Time
331 Link Asia/Chongqing Asia/Chungking
334 # Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
335 # Heilongjiang (except Mohe county), Jilin
336 Zone Asia/Harbin 8:26:44 - LMT 1928 # or Haerbin
337 8:30 - CHAT 1932 Mar # Changbai Time
344 Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar
345 5:30 - KAST 1940 # Kashgar Time
350 # From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
351 # According to a Portuguese decree (1911-05-26)
352 # http://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
353 # Portuguese India switched to GMT+5 on 1912-01-01.
354 #Zone Asia/Panaji [not enough info to complete]
357 Zone Asia/Tel_Aviv 2:19:04 - LMT 1880
363 Zone Atlantic/Jan_Mayen -1:00 - EGT
366 Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown
367 -0:22:48 - JMT 1951 # Jamestown Mean Time
371 Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2
372 -0:25:21 - DMT 1916 May 21 2:00
373 # DMT = Dublin/Dunsink MT
374 -0:25:21 1:00 IST 1916 Oct 1 2:00s
375 # IST = Irish Summer Time
376 0:00 GB-Eire %s 1968 Oct 27
377 1:00 - BST 1971 Oct 31 2:00u
382 # Data from Joseph S. Myers
383 # http://mm.icann.org/pipermail/tz/2013-September/019883.html
384 # References to be added
385 # LMT Location - 49.27N -2.33E - St.Peter Port
386 Zone Europe/Guernsey -0:09:19 - LMT 1913 Jun 18
387 0:00 GB-Eire %s 1940 Jul 2
388 1:00 C-Eur CE%sT 1945 May 8
389 0:00 GB-Eire %s 1968 Oct 27
390 1:00 - BST 1971 Oct 31 2:00u
396 # From Lester Caine (2013-09-04):
397 # The Isle of Man legislation is now on-line at
398 # <http://www.legislation.gov.im>, starting with the original Statutory
399 # Time Act in 1883 and including additional confirmation of some of
400 # the dates of the 'Summer Time' orders originating at
401 # Westminster. There is a little uncertainty as to the starting date
402 # of the first summer time in 1916 which may have be announced a
403 # couple of days late. There is still a substantial number of
404 # documents to work through, but it is thought that every GB change
405 # was also implemented on the island.
407 # AT4 of 1883 - The Statutory Time et cetera Act 1883 -
408 # LMT Location - 54.1508N -4.4814E - Tynwald Hill ( Manx parliament )
409 Zone Europe/Isle_of_Man -0:17:55 - LMT 1883 March 30 0:00s
410 0:00 GB-Eire %s 1968 Oct 27
411 1:00 - BST 1971 Oct 31 2:00u
416 # Data from Joseph S. Myers
417 # http://mm.icann.org/pipermail/tz/2013-September/019883.html
418 # References to be added
419 # LMT Location - 49.187N -2.107E - St. Helier
420 Zone Europe/Jersey -0:08:25 - LMT 1898 Jun 11 16:00u
421 0:00 GB-Eire %s 1940 Jul 2
422 1:00 C-Eur CE%sT 1945 May 8
423 0:00 GB-Eire %s 1968 Oct 27
424 1:00 - BST 1971 Oct 31 2:00u
429 Zone Europe/Ljubljana 0:58:04 - LMT 1884
430 1:00 - CET 1941 Apr 18 23:00
431 1:00 C-Eur CE%sT 1945 May 8 2:00s
432 1:00 1:00 CEST 1945 Sep 16 2:00s
433 1:00 - CET 1982 Nov 27
436 # Bosnia and Herzegovina
437 Zone Europe/Sarajevo 1:13:40 - LMT 1884
438 1:00 - CET 1941 Apr 18 23:00
439 1:00 C-Eur CE%sT 1945 May 8 2:00s
440 1:00 1:00 CEST 1945 Sep 16 2:00s
441 1:00 - CET 1982 Nov 27
445 Zone Europe/Skopje 1:25:44 - LMT 1884
446 1:00 - CET 1941 Apr 18 23:00
447 1:00 C-Eur CE%sT 1945 May 8 2:00s
448 1:00 1:00 CEST 1945 Sep 16 2:00s
449 1:00 - CET 1982 Nov 27
452 # Moldova / Transnistria
453 Zone Europe/Tiraspol 1:58:32 - LMT 1880
454 1:55 - CMT 1918 Feb 15 # Chisinau MT
455 1:44:24 - BMT 1931 Jul 24 # Bucharest MT
456 2:00 Romania EE%sT 1940 Aug 15
457 2:00 1:00 EEST 1941 Jul 17
458 1:00 C-Eur CE%sT 1944 Aug 24
459 3:00 Russia MSK/MSD 1991 Mar 31 2:00
460 2:00 Russia EE%sT 1992 Jan 19 2:00
464 Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun
469 Zone Europe/Zagreb 1:03:52 - LMT 1884
470 1:00 - CET 1941 Apr 18 23:00
471 1:00 C-Eur CE%sT 1945 May 8 2:00s
472 1:00 1:00 CEST 1945 Sep 16 2:00s
473 1:00 - CET 1982 Nov 27
476 # US minor outlying islands
477 Zone Pacific/Johnston -10:00 - HST