xref: /freebsd/contrib/tzdata/backzone (revision 0dbdecfd4f23486da21345fe446a28a1c27db3f2)
1# Zones that go back beyond the scope of the tz database
2
3# This file is in the public domain.
4
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.
9
10
11# From Paul Eggert (2014-10-31):
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'.
17
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.
26
27# Unless otherwise specified, the source for data through 1990 is:
28# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
29# San Diego: ACS Publications, Inc. (2003).
30# Unfortunately this book contains many errors and cites no sources.
31
32# This file is not intended to be compiled standalone, as it
33# assumes rules from other files.  In the tz distribution, use
34# 'make PACKRATDATA=backzone zones' to compile and install this file.
35
36# Zones are sorted by zone name.  Each zone is preceded by the
37# name of the country that the zone is in, along with any other
38# commentary and rules associated with the entry.
39#
40# As explained in the zic man page, the zone columns are:
41# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
42
43# Ethiopia
44# From Paul Eggert (2014-07-31):
45# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a
46# 12-hour clock starting at our 06:00, so their "8 o'clock" is our
47# 02:00 or 14:00.  Keep this in mind when you ask the time in Amharic.
48#
49# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time
50# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in
51# 1890, and that they switched to 3:00 on 1936-05-05.  Perhaps 38E50
52# was for Adis Dera.  Quite likely the Shanks data entries are wrong
53# anyway.
54Zone Africa/Addis_Ababa	2:34:48 -	LMT	1870
55			2:35:20	-	ADMT	1936 May  5 # Adis Dera MT
56			3:00	-	EAT
57
58# Eritrea
59Zone	Africa/Asmara	2:35:32 -	LMT	1870
60			2:35:32	-	AMT	1890        # Asmara Mean Time
61			2:35:20	-	ADMT	1936 May  5 # Adis Dera MT
62			3:00	-	EAT
63Link Africa/Asmara Africa/Asmera
64
65# Mali (southern)
66Zone	Africa/Bamako	-0:32:00 -	LMT	1912
67			 0:00	-	GMT	1934 Feb 26
68			-1:00	-	-01	1960 Jun 20
69			 0:00	-	GMT
70
71# Central African Republic
72Zone	Africa/Bangui	1:14:20	-	LMT	1912
73			1:00	-	WAT
74
75# Gambia
76Zone	Africa/Banjul	-1:06:36 -	LMT	1912
77			-1:06:36 -	BMT	1935 # Banjul Mean Time
78			-1:00	-	-01	1964
79			 0:00	-	GMT
80
81# Malawi
82Zone	Africa/Blantyre	2:20:00 -	LMT	1903 Mar
83			2:00	-	CAT
84
85# Republic of the Congo
86Zone Africa/Brazzaville	1:01:08 -	LMT	1912
87			1:00	-	WAT
88
89# Burundi
90Zone Africa/Bujumbura	1:57:28	-	LMT	1890
91			2:00	-	CAT
92
93# Guinea
94Zone	Africa/Conakry	-0:54:52 -	LMT	1912
95			 0:00	-	GMT	1934 Feb 26
96			-1:00	-	-01	1960
97			 0:00	-	GMT
98
99# Senegal
100Zone	Africa/Dakar	-1:09:44 -	LMT	1912
101			-1:00	-	-01	1941 Jun
102			 0:00	-	GMT
103
104# Tanzania
105Zone Africa/Dar_es_Salaam 2:37:08 -	LMT	1931
106			3:00	-	EAT	1948
107			2:45	-	+0245	1961
108			3:00	-	EAT
109
110# Djibouti
111Zone	Africa/Djibouti	2:52:36 -	LMT	1911 Jul
112			3:00	-	EAT
113
114# Cameroon
115# Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger.
116Zone	Africa/Douala	0:38:48	-	LMT	1912
117			1:00	-	WAT
118# Sierra Leone
119# From Paul Eggert (2014-08-12):
120# The following table is from Shanks & Pottenger, but it can't be right.
121# Whitman gives Mar 31 - Aug 31 for 1931 on.
122# The International Hydrographic Bulletin, 1932-33, p 63 says that
123# Sierra Leone would advance its clocks by 20 minutes on 1933-10-01.
124# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
125Rule	SL	1935	1942	-	Jun	 1	0:00	0:40	-0020
126Rule	SL	1935	1942	-	Oct	 1	0:00	0	-01
127Rule	SL	1957	1962	-	Jun	 1	0:00	1:00	+01
128Rule	SL	1957	1962	-	Sep	 1	0:00	0	GMT
129Zone	Africa/Freetown	-0:53:00 -	LMT	1882
130			-0:53:00 -	FMT	1913 Jun # Freetown Mean Time
131			-1:00	SL	%s	1957
132			 0:00	SL	GMT/+01
133
134# Botswana
135# From Paul Eggert (2013-02-21):
136# Milne says they were regulated by the Cape Town Signal in 1899;
137# assume they switched to 2:00 when Cape Town did.
138Zone	Africa/Gaborone	1:43:40 -	LMT	1885
139			1:30	-	SAST	1903 Mar
140			2:00	-	CAT	1943 Sep 19  2:00
141			2:00	1:00	CAST	1944 Mar 19  2:00
142			2:00	-	CAT
143
144# Zimbabwe
145Zone	Africa/Harare	2:04:12 -	LMT	1903 Mar
146			2:00	-	CAT
147
148# Uganda
149Zone	Africa/Kampala	2:09:40 -	LMT	1928 Jul
150			3:00	-	EAT	1930
151			2:30	-	+0230	1948
152			2:45	-	+0245	1957
153			3:00	-	EAT
154
155# Rwanda
156Zone	Africa/Kigali	2:00:16 -	LMT	1935 Jun
157			2:00	-	CAT
158
159# Democratic Republic of the Congo (west)
160Zone Africa/Kinshasa	1:01:12 -	LMT	1897 Nov  9
161			1:00	-	WAT
162
163# Gabon
164Zone Africa/Libreville	0:37:48 -	LMT	1912
165			1:00	-	WAT
166
167# Togo
168Zone	Africa/Lome	0:04:52 -	LMT	1893
169			0:00	-	GMT
170
171# Angola
172#
173# From Paul Eggert (2018-02-16):
174# Shanks gives 1911-05-26 for the transition to WAT,
175# evidently confusing the date of the Portuguese decree
176# (see Europe/Lisbon) with the date that it took effect.
177#
178Zone	Africa/Luanda	0:52:56	-	LMT	1892
179			0:52:04	-	LMT	1911 Dec 31 23:00u # Luanda MT?
180			1:00	-	WAT
181
182# Democratic Republic of the Congo (east)
183Zone Africa/Lubumbashi	1:49:52 -	LMT	1897 Nov 9
184			2:00	-	CAT
185
186# Zambia
187Zone	Africa/Lusaka	1:53:08 -	LMT	1903 Mar
188			2:00	-	CAT
189
190# Equatorial Guinea
191#
192# Although Shanks says that Malabo switched from UT +00 to +01 on 1963-12-15,
193# a Google Books search says that London Calling, Issues 432-465 (1948), p 19,
194# says that Spanish Guinea was at +01 back then.  The Shanks data entries
195# are most likely wrong, but we have nothing better; use them here for now.
196#
197Zone	Africa/Malabo	0:35:08 -	LMT	1912
198			0:00	-	GMT	1963 Dec 15
199			1:00	-	WAT
200
201# Lesotho
202Zone	Africa/Maseru	1:50:00 -	LMT	1903 Mar
203			2:00	-	SAST	1943 Sep 19  2:00
204			2:00	1:00	SAST	1944 Mar 19  2:00
205			2:00	-	SAST
206
207# Swaziland
208Zone	Africa/Mbabane	2:04:24 -	LMT	1903 Mar
209			2:00	-	SAST
210
211# Somalia
212Zone Africa/Mogadishu	3:01:28 -	LMT	1893 Nov
213			3:00	-	EAT	1931
214			2:30	-	+0230	1957
215			3:00	-	EAT
216
217# Niger
218Zone	Africa/Niamey	 0:08:28 -	LMT	1912
219			-1:00	-	-01	1934 Feb 26
220			 0:00	-	GMT	1960
221			 1:00	-	WAT
222
223# Mauritania
224Zone Africa/Nouakchott	-1:03:48 -	LMT	1912
225			 0:00	-	GMT	1934 Feb 26
226			-1:00	-	-01	1960 Nov 28
227			 0:00	-	GMT
228
229# Burkina Faso
230Zone Africa/Ouagadougou	-0:06:04 -	LMT	1912
231			 0:00	-	GMT
232
233# Benin
234# Whitman says they switched to 1:00 in 1946, not 1934;
235# go with Shanks & Pottenger.
236Zone Africa/Porto-Novo	0:10:28	-	LMT	1912 Jan  1
237			0:00	-	GMT	1934 Feb 26
238			1:00	-	WAT
239
240# Mali (northern)
241Zone	Africa/Timbuktu	-0:12:04 -	LMT	1912
242			 0:00	-	GMT
243
244# Anguilla
245Zone America/Anguilla	-4:12:16 -	LMT	1912 Mar  2
246			-4:00	-	AST
247
248# Antigua and Barbuda
249Zone	America/Antigua	-4:07:12 -	LMT	1912 Mar 2
250			-5:00	-	EST	1951
251			-4:00	-	AST
252
253# Chubut, Argentina
254# The name "Comodoro Rivadavia" exceeds the 14-byte POSIX limit.
255Zone America/Argentina/ComodRivadavia -4:30:00 - LMT	1894 Oct 31
256			-4:16:48 -	CMT	1920 May
257			-4:00	-	-04	1930 Dec
258			-4:00	Arg	-04/-03	1969 Oct  5
259			-3:00	Arg	-03/-02	1991 Mar  3
260			-4:00	-	-04	1991 Oct 20
261			-3:00	Arg	-03/-02	1999 Oct  3
262			-4:00	Arg	-04/-03	2000 Mar  3
263			-3:00	-	-03	2004 Jun  1
264			-4:00	-	-04	2004 Jun 20
265			-3:00	-	-03
266
267# Aruba
268Zone	America/Aruba	-4:40:24 -	LMT	1912 Feb 12 # Oranjestad
269			-4:30	-	-0430	1965
270			-4:00	-	AST
271
272# Cayman Is
273Zone	America/Cayman	-5:25:32 -	LMT	1890     # Georgetown
274			-5:07:10 -	KMT	1912 Feb # Kingston Mean Time
275			-5:00	-	EST
276
277# United States
278#
279# From Paul Eggert (2018-03-18):
280# America/Chillicothe would be tricky, as it was a city of two-timers:
281# "To prevent a constant mixup at Chillicothe, caused by the courthouse
282#  clock running on central time and the city running on 'daylight saving'
283#  time, a third hand was added to the dial of the courthouse clock."
284# -- Ohio news in brief. The Cedarville Herald. 1920-05-21;43(21):1 (col. 5)
285# https://digitalcommons.cedarville.edu/cedarville_herald/794
286
287# Canada
288Zone America/Coral_Harbour -5:32:40 -	LMT	1884
289			-5:00	NT_YK	E%sT	1946
290			-5:00	-	EST
291
292# Dominica
293Zone America/Dominica	-4:05:36 -	LMT	1911 Jul  1  0:01 # Roseau
294			-4:00	-	AST
295
296# Baja California
297# See 'northamerica' for why this entry is here rather than there.
298Zone America/Ensenada	-7:46:28 -	LMT	1922 Jan  1  0:13:32
299			-8:00	-	PST	1927 Jun 10 23:00
300			-7:00	-	MST	1930 Nov 16
301			-8:00	-	PST	1942 Apr
302			-7:00	-	MST	1949 Jan 14
303			-8:00	-	PST	1996
304			-8:00	Mexico	P%sT
305
306# Grenada
307Zone	America/Grenada	-4:07:00 -	LMT	1911 Jul # St George's
308			-4:00	-	AST
309
310# Guadeloupe
311Zone America/Guadeloupe	-4:06:08 -	LMT	1911 Jun  8 # Pointe-à-Pitre
312			-4:00	 -	AST
313
314# Canada
315#
316# From Paul Eggert (2015-03-24):
317# Since 1970 most of Quebec has been like Toronto; see
318# America/Toronto.  However, earlier versions of the tz database
319# mistakenly relied on data from Shanks & Pottenger saying that Quebec
320# differed from Ontario after 1970, and the following rules and zone
321# were created for most of Quebec from the incorrect Shanks &
322# Pottenger data.  The post-1970 entries have been corrected, but the
323# pre-1970 entries are unchecked and probably have errors.
324#
325# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
326Rule	Mont	1917	only	-	Mar	25	2:00	1:00	D
327Rule	Mont	1917	only	-	Apr	24	0:00	0	S
328Rule	Mont	1919	only	-	Mar	31	2:30	1:00	D
329Rule	Mont	1919	only	-	Oct	25	2:30	0	S
330Rule	Mont	1920	only	-	May	 2	2:30	1:00	D
331Rule	Mont	1920	1922	-	Oct	Sun>=1	2:30	0	S
332Rule	Mont	1921	only	-	May	 1	2:00	1:00	D
333Rule	Mont	1922	only	-	Apr	30	2:00	1:00	D
334Rule	Mont	1924	only	-	May	17	2:00	1:00	D
335Rule	Mont	1924	1926	-	Sep	lastSun	2:30	0	S
336Rule	Mont	1925	1926	-	May	Sun>=1	2:00	1:00	D
337Rule	Mont	1927	1937	-	Apr	lastSat	24:00	1:00	D
338Rule	Mont	1927	1937	-	Sep	lastSat	24:00	0	S
339Rule	Mont	1938	1940	-	Apr	lastSun	0:00	1:00	D
340Rule	Mont	1938	1939	-	Sep	lastSun	0:00	0	S
341Rule	Mont	1946	1973	-	Apr	lastSun	2:00	1:00	D
342Rule	Mont	1945	1948	-	Sep	lastSun	2:00	0	S
343Rule	Mont	1949	1950	-	Oct	lastSun	2:00	0	S
344Rule	Mont	1951	1956	-	Sep	lastSun	2:00	0	S
345Rule	Mont	1957	1973	-	Oct	lastSun	2:00	0	S
346Zone America/Montreal	-4:54:16 -	LMT	1884
347			-5:00	Mont	E%sT	1918
348			-5:00	Canada	E%sT	1919
349			-5:00	Mont	E%sT	1942 Feb  9  2:00s
350			-5:00	Canada	E%sT	1946
351			-5:00	Mont	E%sT	1974
352			-5:00	Canada	E%sT
353
354# Montserrat
355# From Paul Eggert (2006-03-22):
356# In 1995 volcanic eruptions forced evacuation of Plymouth, the capital.
357# world.gazetteer.com says Cork Hill is the most populous location now.
358Zone America/Montserrat	-4:08:52 -	LMT	1911 Jul  1  0:01 # Cork Hill
359			-4:00	-	AST
360
361# United States
362#
363# From Paul Eggert (2018-03-18):
364# America/Palm_Springs would be tricky, as it kept two sets of clocks
365# in 1946/7.  See the following notes.
366#
367# From Steve Allen (2018-01-19):
368# The shadow of Mt. San Jacinto brings darkness very early in the winter
369# months.  In 1946 the chamber of commerce decided to put the clocks of Palm
370# Springs forward by an hour in the winter.
371# https://www.desertsun.com/story/life/2017/12/27/palm-springs-struggle-daylight-savings-time-and-idea-sun-time/984416001/
372# Desert Sun, Number 18, 1 November 1946
373# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19461101
374# has proposal for meeting on front page and page 21.
375# Desert Sun, Number 19, 5 November 1946
376# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19461105
377# reports that Sun Time won at the meeting on front page and page 5.
378# Desert Sun, Number 37, 7 January 1947
379# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19470107.2.12
380# front page reports request to abandon Sun Time and page 7 notes a "class war".
381# Desert Sun, Number 38, 10 January 1947
382# https://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=DS19470110
383# front page reports on end.
384
385# Argentina
386# This entry was intended for the following areas, but has been superseded by
387# more detailed zones.
388# Santa Fe (SF), Entre Ríos (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
389# Formosa (FM), La Pampa (LP), Chubut (CH)
390Zone America/Rosario	-4:02:40 -	LMT	1894 Nov
391			-4:16:44 -	CMT	1920 May
392			-4:00	-	-04	1930 Dec
393			-4:00	Arg	-04/-03	1969 Oct  5
394			-3:00	Arg	-03/-02	1991 Jul
395			-3:00	-	-03	1999 Oct  3  0:00
396			-4:00	Arg	-04/-03	2000 Mar  3  0:00
397			-3:00	-	-03
398
399# St Kitts-Nevis
400Zone America/St_Kitts	-4:10:52 -	LMT	1912 Mar  2 # Basseterre
401			-4:00	-	AST
402
403# St Lucia
404Zone America/St_Lucia	-4:04:00 -	LMT	1890 # Castries
405			-4:04:00 -	CMT	1912 # Castries Mean Time
406			-4:00	-	AST
407
408# Virgin Is
409Zone America/St_Thomas	-4:19:44 -	LMT	1911 Jul # Charlotte Amalie
410			-4:00	-	AST
411
412# St Vincent and the Grenadines
413Zone America/St_Vincent	-4:04:56 -	LMT	1890 # Kingstown
414			-4:04:56 -	KMT	1912 # Kingstown Mean Time
415			-4:00	-	AST
416
417# British Virgin Is
418Zone America/Tortola	-4:18:28 -	LMT	1911 Jul # Road Town
419			-4:00	-	AST
420
421# McMurdo, Ross Island, since 1955-12
422Zone Antarctica/McMurdo	0	-	-00	1956
423			12:00	NZ	NZ%sT
424Link Antarctica/McMurdo Antarctica/South_Pole
425
426# Yemen
427# Milne says 2:59:54 was the meridian of the saluting battery at Aden,
428# and that Yemen was at 1:55:56, the meridian of the Hagia Sophia.
429Zone	Asia/Aden	2:59:54	-	LMT	1950
430			3:00	-	+03
431
432# Bahrain
433Zone	Asia/Bahrain	3:22:20 -	LMT	1920     # Manamah
434			4:00	-	+04	1972 Jun
435			3:00	-	+03
436
437# India
438#
439# From Paul Eggert (2014-09-06):
440# The 1876 Report of the Secretary of the [US] Navy, p 305 says that Madras
441# civil time was 5:20:57.3.
442#
443# From Paul Eggert (2014-08-21):
444# In tomorrow's The Hindu, Nitya Menon reports that India had two civil time
445# zones starting in 1884, one in Bombay and one in Calcutta, and that railways
446# used a third time zone based on Madras time (80° 18' 30" E).  Also,
447# in 1881 Bombay briefly switched to Madras time, but switched back.  See:
448# http://www.thehindu.com/news/cities/chennai/madras-375-when-madras-clocked-the-time/article6339393.ece
449#Zone	  Asia/Chennai  [not enough info to complete]
450
451# China
452# Long-shu Time (probably due to Long and Shu being two names of that area)
453# Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
454# most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
455# counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
456# Yangchun, Yangjiang, Yu'nan, and Yunfu.
457Zone	Asia/Chongqing	7:06:20	-	LMT	1928     # or Chungking
458			7:00	-	+07	1980 May
459			8:00	PRC	C%sT
460Link Asia/Chongqing Asia/Chungking
461
462# Vietnam
463# From Paul Eggert (2014-10-13):
464# See Asia/Ho_Chi_Minh for the source for this data.
465# Trần's book says the 1954-55 transition to 07:00 in Hanoi was in
466# October 1954, with exact date and time unspecified.
467Zone	Asia/Hanoi	7:03:24 -	LMT	1906 Jul  1
468			7:06:30	-	PLMT	1911 May  1
469			7:00	-	+07	1942 Dec 31 23:00
470			8:00	-	+08	1945 Mar 14 23:00
471			9:00	-	+09	1945 Sep  2
472			7:00	-	+07	1947 Apr  1
473			8:00	-	+08	1954 Oct
474			7:00	-	+07
475
476# China
477# Changbai Time ("Long-white Time", Long-white = Heilongjiang area)
478# Heilongjiang (except Mohe county), Jilin
479Zone	Asia/Harbin	8:26:44	-	LMT	1928     # or Haerbin
480			8:30	-	+0830	1932 Mar
481			8:00	-	CST	1940
482			9:00	-	+09	1966 May
483			8:30	-	+0830	1980 May
484			8:00	PRC	C%sT
485
486# far west China
487Zone	Asia/Kashgar	5:03:56	-	LMT	1928     # or Kashi or Kaxgar
488			5:30	-	+0530	1940
489			5:00	-	+05	1980 May
490			8:00	PRC	C%sT
491
492# Kuwait
493Zone	Asia/Kuwait	3:11:56 -	LMT	1950
494			3:00	-	+03
495
496
497# Oman
498# Milne says 3:54:24 was the meridian of the Muscat Tidal Observatory.
499Zone	Asia/Muscat	3:54:24 -	LMT	1920
500			4:00	-	+04
501
502# India
503# From Paul Eggert (2014-08-11), after a heads-up from Stephen Colebourne:
504# According to a Portuguese decree (1911-05-26)
505# https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf
506# Portuguese India switched to UT +05 on 1912-01-01.
507#Zone	Asia/Panaji	[not enough info to complete]
508
509# Cambodia
510# From Paul Eggert (2014-10-11):
511# See Asia/Ho_Chi_Minh for the source for most of this data.  Also, guess
512# (1) Cambodia reverted to UT +07 on 1945-09-02, when Vietnam did, and
513# (2) they also reverted to +07 on 1953-11-09, the date of independence.
514# These guesses are probably wrong but they're better than guessing no
515# transitions there.
516Zone	Asia/Phnom_Penh	6:59:40 -	LMT	1906 Jul  1
517			7:06:30	-	PLMT	1911 May  1
518			7:00	-	+07	1942 Dec 31 23:00
519			8:00	-	+08	1945 Mar 14 23:00
520			9:00	-	+09	1945 Sep  2
521			7:00	-	+07	1947 Apr  1
522			8:00	-	+08	1953 Nov  9
523			7:00	-	+07
524
525# Israel
526Zone	Asia/Tel_Aviv	2:19:04 -	LMT	1880
527			2:21	-	JMT	1918
528			2:00	Zion	I%sT
529
530# Laos
531# From Paul Eggert (2014-10-11):
532# See Asia/Ho_Chi_Minh for the source for most of this data.
533# Trần's book says that Laos reverted to UT +07 on 1955-04-15.
534# Also, guess that Laos reverted to +07 on 1945-09-02, when Vietnam did;
535# this is probably wrong but it's better than guessing no transition.
536Zone	Asia/Vientiane	6:50:24 -	LMT	1906 Jul  1
537			7:06:30	-	PLMT	1911 May  1
538			7:00	-	+07	1942 Dec 31 23:00
539			8:00	-	+08	1945 Mar 14 23:00
540			9:00	-	+09	1945 Sep  2
541			7:00	-	+07	1947 Apr  1
542			8:00	-	+08	1955 Apr 15
543			7:00	-	+07
544
545# Jan Mayen
546# From Whitman:
547Zone Atlantic/Jan_Mayen	-1:00	-	-01
548
549# St Helena
550Zone Atlantic/St_Helena	-0:22:48 -	LMT	1890 # Jamestown
551			-0:22:48 -	JMT	1951 # Jamestown Mean Time
552			 0:00	-	GMT
553
554# Northern Ireland
555Zone	Europe/Belfast	-0:23:40 -	LMT	1880 Aug  2
556			-0:25:21 -	DMT	1916 May 21  2:00
557						# DMT = Dublin/Dunsink MT
558			-0:25:21 1:00	IST	1916 Oct  1  2:00s
559						# IST = Irish Summer Time
560			 0:00	GB-Eire	%s	1968 Oct 27
561			 1:00	-	BST	1971 Oct 31  2:00u
562			 0:00	GB-Eire	%s	1996
563			 0:00	EU	GMT/BST
564
565# Guernsey
566# Data from Joseph S. Myers
567# https://mm.icann.org/pipermail/tz/2013-September/019883.html
568# References to be added
569# LMT is for Town Church, St. Peter Port, 49° 27' 17" N, 2° 32' 10" W.
570Zone	Europe/Guernsey	-0:10:09 -	LMT	1913 Jun 18
571			 0:00	GB-Eire	%s	1940 Jul  2
572			 1:00	C-Eur	CE%sT	1945 May  8
573			 0:00	GB-Eire	%s	1968 Oct 27
574			 1:00	-	BST	1971 Oct 31  2:00u
575			 0:00	GB-Eire	%s	1996
576			 0:00	EU	GMT/BST
577
578# Isle of Man
579#
580# From Lester Caine (2013-09-04):
581# The Isle of Man legislation is now on-line at
582# <https://www.legislation.gov.im>, starting with the original Statutory
583# Time Act in 1883 and including additional confirmation of some of
584# the dates of the 'Summer Time' orders originating at
585# Westminster.  There is a little uncertainty as to the starting date
586# of the first summer time in 1916 which may have been announced a
587# couple of days late.  There is still a substantial number of
588# documents to work through, but it is thought that every GB change
589# was also implemented on the island.
590#
591# AT4 of 1883 - The Statutory Time et cetera Act 1883 -
592# LMT Location - 54.1508N -4.4814E - Tynwald Hill ( Manx parliament )
593Zone Europe/Isle_of_Man	-0:17:55 -	LMT	1883 Mar 30  0:00s
594			 0:00	GB-Eire	%s	1968 Oct 27
595			 1:00	-	BST	1971 Oct 31  2:00u
596			 0:00	GB-Eire	%s	1996
597			 0:00	EU	GMT/BST
598
599# Jersey
600# Data from Joseph S. Myers
601# https://mm.icann.org/pipermail/tz/2013-September/019883.html
602# References to be added
603# LMT is for Parish Church, St. Helier, 49° 11' 0.57" N, 2° 6' 24.33" W.
604Zone	Europe/Jersey	-0:08:26 -	LMT	1898 Jun 11 16:00u
605			 0:00	GB-Eire	%s	1940 Jul  2
606			 1:00	C-Eur	CE%sT	1945 May  8
607			 0:00	GB-Eire	%s	1968 Oct 27
608			 1:00	-	BST	1971 Oct 31  2:00u
609			 0:00	GB-Eire	%s	1996
610			 0:00	EU	GMT/BST
611
612# Slovenia
613Zone Europe/Ljubljana	0:58:04	-	LMT	1884
614			1:00	-	CET	1941 Apr 18 23:00
615			1:00	C-Eur	CE%sT	1945 May  8  2:00s
616			1:00	1:00	CEST	1945 Sep 16  2:00s
617			1:00	-	CET	1982 Nov 27
618			1:00	EU	CE%sT
619
620# Bosnia and Herzegovina
621Zone	Europe/Sarajevo	1:13:40	-	LMT	1884
622			1:00	-	CET	1941 Apr 18 23:00
623			1:00	C-Eur	CE%sT	1945 May  8  2:00s
624			1:00	1:00	CEST	1945 Sep 16  2:00s
625			1:00	-	CET	1982 Nov 27
626			1:00	EU	CE%sT
627
628# Macedonia
629Zone	Europe/Skopje	1:25:44	-	LMT	1884
630			1:00	-	CET	1941 Apr 18 23:00
631			1:00	C-Eur	CE%sT	1945 May  8  2:00s
632			1:00	1:00	CEST	1945 Sep 16  2:00s
633			1:00	-	CET	1982 Nov 27
634			1:00	EU	CE%sT
635
636# Moldova / Transnistria
637Zone	Europe/Tiraspol	1:58:32	-	LMT	1880
638			1:55	-	CMT	1918 Feb 15 # Chisinau MT
639			1:44:24	-	BMT	1931 Jul 24 # Bucharest MT
640			2:00	Romania	EE%sT	1940 Aug 15
641			2:00	1:00	EEST	1941 Jul 17
642			1:00	C-Eur	CE%sT	1944 Aug 24
643			3:00	Russia	MSK/MSD	1991 Mar 31  2:00
644			2:00	Russia	EE%sT	1992 Jan 19  2:00
645			3:00	Russia	MSK/MSD
646
647# Liechtenstein
648Zone	Europe/Vaduz	0:38:04 -	LMT	1894 Jun
649			1:00	-	CET	1981
650			1:00	EU	CE%sT
651
652# Croatia
653Zone	Europe/Zagreb	1:03:52	-	LMT	1884
654			1:00	-	CET	1941 Apr 18 23:00
655			1:00	C-Eur	CE%sT	1945 May  8  2:00s
656			1:00	1:00	CEST	1945 Sep 16  2:00s
657			1:00	-	CET	1982 Nov 27
658			1:00	EU	CE%sT
659
660# Madagascar
661Zone Indian/Antananarivo 3:10:04 -	LMT	1911 Jul
662			3:00	-	EAT	1954 Feb 27 23:00s
663			3:00	1:00	EAST	1954 May 29 23:00s
664			3:00	-	EAT
665
666# Comoros
667Zone	Indian/Comoro	2:53:04 -	LMT	1911 Jul # Moroni, Gran Comoro
668			3:00	-	EAT
669
670# Mayotte
671Zone	Indian/Mayotte	3:00:56 -	LMT	1911 Jul # Mamoutzou
672			3:00	-	EAT
673
674# US minor outlying islands
675Zone Pacific/Johnston	-10:00	-	HST
676
677# US minor outlying islands
678#
679# From Mark Brader (2005-01-23):
680# [Fallacies and Fantasies of Air Transport History, by R.E.G. Davies,
681# published 1994 by Paladwr Press, McLean, VA, USA; ISBN 0-9626483-5-3]
682# reproduced a Pan American Airways timetable from 1936, for their weekly
683# "Orient Express" flights between San Francisco and Manila, and connecting
684# flights to Chicago and the US East Coast.  As it uses some time zone
685# designations that I've never seen before:....
686# Fri. 6:30A Lv. HONOLOLU (Pearl Harbor), H.I.   H.L.T. Ar. 5:30P Sun.
687#  "   3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A  "
688#
689Zone Pacific/Midway	-11:49:28 -	LMT	1901
690			-11:00	-	-11	1956 Jun  3
691			-11:00	1:00	-10	1956 Sep  2
692			-11:00	-	-11
693
694# N Mariana Is
695Zone Pacific/Saipan	-14:17:00 -	LMT	1844 Dec 31
696			 9:43:00 -	LMT	1901
697			 9:00	-	+09	1969 Oct
698			10:00	-	+10	2000 Dec 23
699			10:00	-	ChST	# Chamorro Standard Time
700