New timezone files from Arthur Olson and Paul Eggert
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ecdde2d7 1# @(#)europe 7.13
15637ed4 2
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3# This data is by no means authoritative; if you think you know better,
4# go ahead and edit the file (and please send any changes to
5# tz@elsie.nci.nih.gov for general use in the future).
15637ed4 6
ecdde2d7 7# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
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8# A good source for time zone historical data outside the U.S. is
9# Thomas G. Shanks, The International Atlas (3rd edition),
10# San Diego: ACS Publications, Inc. (1991).
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11# Except where otherwise noted, it is the source for the data below.
12#
13# I invented the abbreviations marked `*' in the following table;
14# the rest are from earlier versions of this file, or from other sources.
15# The starred Russian names are dubious. Corrections are welcome!
16# std dst
17# LMT Local Mean Time
18# LST Local Star Time (Russian ``mestnoe zvezdnoe vremya'')
19# -4:00 AST Atlantic
20# -3:00 WGT+DST Western Greenland*
21# -2:00 MGT+DST Middle Greenland*
22# -1:00 EGT+DST Eastern Greenland*
23# -1:00 ACT+DST Azores and Canaries*
24# -1:00 IST IDT Iceland (no longer used)*
25# 0:00 GMT BST Greenwich, British Summer
26# 0:00 WET+DST Western Europe
27# 1:00 MET+DST Middle Europe
28# 2:00 EET+DST Eastern Europe
29# 3:00 MSK MSD Moscow
30# 3:00 TUR+DST Turkey (no longer used)*
31# 4:00 SSK SSD Sverdlovsk*
32# 5:00 OSK OSD Omsk*
33# 6:00 NSK NSD Novosibirsk
34# 7:00 ISK ISD Irkutsk*
35# 8:00 YSK YSD Yakutsk*
36# 9:00 VSK VSD Vladivostok*
37# 10:00 GSK GSD Magadan*
38# 11:00 PSK PSD Petropavlovsk-Kamchatski*
39# 12:00 ASK ASD Anadyr*
40#
41# See the `africa' file for Zone naming conventions.
42#
43# A reliable and entertaining source about time zones, especially in Britain,
44# is Derek Howse, Greenwich time and the discovery of the longitude,
45# Oxford University Press (1980).
46
47# From Andrew A. Chernov <ache@astral.msk.su> (November 12, 1993):
48# LST is Local Star Time (``mestnoe zvezdnoe vremya'').
1bd76676 49
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50###############################################################################
51
52# United Kingdom
53
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54# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
55#
56# Howse writes that Britain was the first country to use standard time.
57# The railways cared most about the inconsistencies of local mean time,
58# and it was they who forced a uniform time on the country.
59# The original idea was credited to Dr. William Hyde Wollaston (1766-1828);
60# it was popularized in 1840 by Capt. Basil Hall, RN (1788-1844),
61# famed explorer and former Commissioner for Longitude.
62# The first railway to adopt London time was the Great Western Railway
63# in November 1840; other railways followed suit, and by 1847 most
64# (though not all) railways used London time. On 1847 Sep 22 the
65# Railway Clearing House, an industry standards body, recommended that GMT be
66# adopted at all stations; the January 1848 Bradshaw's lists most major
67# railways as using GMT. By 1855 the vast majority of public
68# clocks in Britain were set to GMT (though some, like the Great Clock
69# in Tom Tower at Christ Church, Oxford, were fitted with two minute hands,
70# one for local time and one for GMT). The last major holdout was the legal
71# system, which stubbornly stuck to local time for many years, leading
72# to oddities like polls opening at 08:13 and closing at 16:13.
73# The legal system finally switched to GMT when the Statutes (Definition
74# of Time) Act took effect; it received the Royal Assent on 1880 Aug 2.
75#
76# In the tables below, we condense this complicated story into a single
77# transition date for London, namely 1847 Sep 22. We don't know as much
78# about Dublin, so we use 1880 Aug 2, the legal transition time.
79
80# From Peter Ilieve <peter@memex.co.uk> (July 4, 1989):
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81#
82# From the UK Government paper "Summer Time: A Consultation Document"
83# (HMSO Cm722 June 1989), which is about the possibility of the UK moving
84# into the central European timezone and synchronising its summer time with
85# the rest of Europe (by moving the end date back a month to end Sep.,
86# the start dates are already the same).
87#
88# Summer time was not observed before 1916.
89# It was introduced in the First World War in response to its introduction
90# by Germany in March 1916.
91# During the Second World War normal summer time was used in Winter and double
92# summer time was used in Summer.
93# Between 1968 and 1971 GMT+1 was used all year as an experiment.
94# This caused voluble objections in Scotland and the experiment was judged
95# a failure.
96#
97# Although it does not say what happens in Europe, it does say that most
98# of Europe did not use summer time until 1979, presumably dropping it
99# after the 1st and/or 2nd war.
100#
101# Note that this is not necessarily accurate for Eire.
102#
103# The paper gives a complete record of dates from 1916, and dates up to 1992.
104# The intention is to have the new system, if any, start in 1993.
105# The dates are (copied exactly from the table in the paper):
106#
ecdde2d7 107# Summer Time Double Summer Time
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108# Year Start End Start End
109# 1916 21 May 1 October
110# 1917 8 April 17 September
111# 1918 24 March 30 September
112# 1919 30 March 29 September
113# 1920 28 March 25 October
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114# (extended from
115# 27 Sep. because
116# of coal strike)
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117#
118# 1921 3 April 3 October
119# 1922 26 March 8 October
120# 1923 22 April 16 September
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121# 1924 20 April 21 September [Some of the dates in these
122# 1925 to 3rd Sunday 1st Sunday three lines are incorrect;
123# 1938 in April in October -- see below.]
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124#
125# 1939 16 April 19 November
126# 1940 25 February continued
127# 1941 continued continued 4 May 10 August
128# 1942 continued continued 5 April 9 August
129# 1943 continued continued 4 April 15 August
130# 1944 continued continued 2 April 17 September
131# 1945 continued 7 October 2 April 15 July
132#
133# 1946 14 April 6 October
134# 1947 16 March 2 November 13 April 10 August
135# 1948 14 March 31 October
136# 1949 3 April 30 October
137# 1950 16 April 22 October
138# 1951 15 April 21 October
139# 1952 20 April 26 October
140#
141# 1953 19 April 4 October
142# 1954 11 April 3 October
143# 1955 17 April 2 October
ecdde2d7 144# 1956 15 April 7 October [`15 April' is disputed; see below.]
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145# 1957 14 April 6 October
146# 1958 20 April 5 October
147# 1959 19 April 4 October
148# 1960 10 April 2 October
149#
150# 1961 26 March 29 October
151# 1962 25 March 28 October
152# 1963 31 March 27 October
153# 1964 22 March 25 October
154# 1965 21 March 24 October
155# 1966 20 March 23 October
156# 1967 19 March 29 October
157#
158# 1968 18 February continued
159# 1969 continued continued
160# 1970 continued continued
161# 1971 continued 31 October
162# 1972 19 March 29 October
163# 1973 18 March 28 October
164# 1974 17 March 27 October
165#
166# 1975 16 March 26 October
167# 1976 21 March 24 October
168# 1977 20 March 23 October
169# 1978 19 March 29 October
170# 1979 18 March 28 October
171# 1980 16 March 26 October
172# 1981 29 March 25 October
15637ed4 173#
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174# 1982 28 March 24 October
175# 1983 27 March 23 October
176# 1984 25 March 28 October
177# 1985 31 March 27 October
178# 1986 30 March 26 October
179# 1987 29 March 25 October
180# 1988 27 March 23 October
181#
182# 1989 26 March 29 October
183# 1990 25 March 28 October
184# 1991 31 March 27 October
185# 1992 29 March 25 October
186#
187# These dates agree with the ones from Whitaker's Almanac for 1960--87. . .
188
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189# From Peter Ilieve (peter@memex.co.uk) (October 18, 1993)
190#
191# I made a transcription error in my table for 1924. The government Green
192# Paper I was copying from actually says 20 April, which I mangled into
193# 30 April.
1bd76676 194#
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195# This still differs from the 13 April printed in Shanks' book. I would
196# side with Shanks here. Software that purports to calculate the date of
197# Easter says that 20 April 1924 was Easter. The Summer Time Act 1922,
198# which was the relevant law at the time, says that Summer Time starts
199# after the 3rd Saturday in April, unless that is Easter, when it is the
200# 2nd Saturday. I asked the Home Office about this discrepancy but they
201# weren't interested in helping at all.
1bd76676 202#
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203# If you continue to include my email with the table of dates in it in
204# your europe file I would appreciate it saying the 20 April for 1924, as
205# that is what the document I was quoting from said. Add a note somewhere
206# to say that the date is almost certainly bogus.
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207
208# From Arthur David Olson (January 19, 1989):
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209#
210# A source at the British Information Office in New York avers that it's
211# known as "British" Summer Time in all parts of the United Kingdom.
15637ed4 212
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213# Date: 4 Jan 89 08:57:25 GMT (Wed)
214# From: Jonathan Leffler <nih-csl!uunet!mcvax!sphinx.co.uk!john>
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215# [British Summer Time] is fixed annually by Act of Parliament.
216# If you can predict what Parliament will do, you should be in
217# politics making a fortune, not computing.
15637ed4 218
ecdde2d7 219# From Peter Ilieve <peter@memex.co.uk> (September 3, 1993):
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220#
221# I have some more up to date info.
ecdde2d7 222#
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223# Our Government...couldn't...make a decision after the 1989 consultation
224# exercise about the UK changing its timezone so it just let things drift
225# (different from deciding to keep the status quo). According to the
226# Summer Time Order 1992 (SI 1992/1729) the dates of Summer Time for 1993
227# and 1994 are:
ecdde2d7 228# Start End
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229# 1993 28 March 24 October
230# 1994 27 March 23 October
231# All start and end times are at 01:00 GMT.
ecdde2d7 232#
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233# There [was] an error in your tables for the start and end times prior to 1981.
234# The UK always used to change at 02:00 GMT. In 1981 it changed to 01:00 GMT
235# as a part of EC harmonisation and has remained at that time since.
ecdde2d7 236#
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237# I have found the default algorithm for UK Summer Time, it is in the
238# Summer Time Act 1972. Section 1 states that in the absence of an Order
239# in Council Summer Time starts at 02:00 GMT on the morning of the day
240# after the third Saturday in March, unless that day is Easter Day, in
241# which case it is the morning of the day after the second Saturday.
242# It ends at 02:00 GMT on the morning of the day after the fourth Saturday
243# in October. (All the redundant `morning of the day ...' is in the Act.)
244# This is only of passing interest now as it will always be overridden by
245# an Order in Council (a Statutary Instrument, the SI thing mentioned above)
246# to specify the EC specified dates.
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247
248# From Peter Ilieve <peter@memex.co.uk> (October 18, 1993):
249#
250# My contact in the Ministry of Defence Public Relations department
251# accepted the challenge of looking into this and produced the following,
252# from Hansard (the official record of the UK Parliament), Oral Answers,
253# 1 March 1945, cols 1559--60:
254#
255# `58. Major Sir Goronwy Owen asked the Secretary of State for the Home
256# Department if he is now able to state the Government's proposals
257# regarding double summer time.
258#
259# [two other similar questions omitted]
260#
261# Mr. H. Morrison: The Government, in reviewing the matter, have
262# considered, [...] the conclusion has been reached that the adoption of
263# double summer time from the beginning of April is essential to the
264# maintenance of the war effort. [...] As 1st April is Easter Sunday,
265# when very early services are held in many churches, it is proposed that
266# double summer time shall start not in the night preceding Easter
267# Sunday, but in the night of Sunday- Monday so that it will operate from
268# Monday, 2nd April.'
269
270# From Peter Ilieve <peter@memex.co.uk> (September 3, 1993):
15637ed4 271#
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272# > # Current rules
273# > Rule GB-Eire 1981 max - Mar lastSun 1:00s 1:00 BST
274# > Rule GB-Eire 1981 max - Oct Sun>=23 1:00s 0 GMT
ecdde2d7 275#
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276# The ending rule here doesn't match the EC rules, which specify the fourth
277# Sunday in October for the UK and Eire. The `fourth Sunday' rule wasn't
278# followed in 1989, but then the sixth EC directive wasn't in force then
279# and I don't know what previous ones said. 1995 is the next year with
280# the 4th Sun on 22 Oct, but that year isn't covered by the UK Summer Time
281# Order or the sixth EC directive. Your Oct Sun>=23 rule matches history
282# and with things only announced for 2 years or so in advance who knows
283# what will happen.
ecdde2d7 284#
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285# There are renewed rumours that the Government here will make another
286# attempt at resolving this issue, which is what prompted me to start
287# asking the Home Office and the EC about it again. The EC categorically
288# state they are not asking anybody to change timezone, they only want
289# common start/end dates. The UK Govt. seem to want to change our zone
290# and blame the resulting fuss on the EC. Me, I think we should scrap
291# summer time completely, noon is when the Sun is overhead, and that should
292# be the end of it.
15637ed4 293
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294# From Peter Ilieve <peter@memex.co.uk> (October 22, 1993):
295#
296# I now have the text of the Summer Time Act 1916, the granddaddy of them all.
297# It is headed: `An Act to provide for the Time in Great Britain and Ireland
298# being in advance of Greenwich and Dublin mean time respectively in the
299# summer months'.
300#
301# It specifies 21 May and 1 October for 1916 (both at 02:00 GMT) and whatever
302# dates an Order in Council may specify for subsequent years.
303#
304# Section 4 states: `This act shall apply to Ireland in like manner as it
305# applies to Great Britain, with the substitution however of references
306# to Dublin mean time for references to Greenwich mean time.'
307#
308# Lorna, my learned legal friend who supplied it, also offers this quote
309# from Halsbury's Statutes on the extent of Acts:
310#
311# `An Act of the United Kingdom Parliament is to be construed prima facie
312# to apply to the whole of the United Kingdom and not to any place outside.
313# [...] The expression "United Kingdom" for this purpose includes (since
314# 1922) Great Britain (ie. England, Wales and Scotland) and Northern Ireland,
315# but it does not include the Channel Islands or the Isle of Man.'
316#
317# She goes on to say the seminal event of 1922 was the establishment of
318# the Irish Free State, now called Eire.
319#
320# The Act doesn't say anything about Wales (or Scotland) so I would assert
321# that Shanks is wrong here. I would like to know why he thinks Wales
322# was different.
323#
324# It also confirms the fact that Ireland followed Dublin time back then,
325# and 25 minutes behind Greenwich, as Shanks has it, would be correct.
326
327# From Peter Ilieve <peter@memex.co.uk> (October 28, 1993):
328#
329# I now have before me, thanks to my learned legal friend Lorna, the text of
330# the Time (Ireland) Act 1916.
331#
332# It says that as from 2 AM Dublin Mean Time on 1 October 1916 the time
333# for general purposes in Ireland shall be the same as the rest of Great
334# Britain (ie. GMT with the Summer Time periods specified by the Summer Time
335# Act 1916).... As Ireland was behind GMT/BST at 02:00 DMT on 1 Oct GB would
336# have already put the clocks back. Using DST as Dublin Summer Time the
337# sequence would have been:
338# Dublin London
339# 02:34 DST 02:59 BST
340# 02:35 DST 02:00 GMT
341# 02:59 DST 02:24 GMT
342# 02:25 GMT 02:25 GMT
343# with the transition 03:00 DST -> 02:00 DMT -> 02:25 GMT all at once.
344#
345# In a table of repeals in the Schedule to the Act it mentions the
346# Statutes (Definition of Time) Act 1880. This is presumably the source
347# of the 1880 date in Shanks. The little bit of it that is repealed
348# also refers solely to Ireland and Dublin Mean Time.
349
350# From Peter Ilieve <peter@memex.co.uk> (October 29, 1993):
351#
352# My case is that, with the sole exception of Ireland in 1916 using Dublin
353# Mean Time, Summer Time has been uniform throughout the United Kingdom
354# ever since it first started in 1916.
355#
356# The United Kingdom is England, Wales and Scotland plus all of Ireland from
357# 1916 up to and including 1921, or plus Northern Ireland from 1922 to date.
358#
359# The dates used are those specified in the table in Summer Time: A Consultation
360# Document (Cm 722, 1989) that are now included in the europe file, with a
361# change to a single date, the start in 1924. I made a typo in my 1989 mail
362# and the table itself is also wrong. The correct date is 13 April.
363# The times were 02:00 GMT up to and including 1980, 01:00 GMT from 1981 on,
364# except for wartime double summer time.
365#
366# As evidence I would cite:
367#
368# - The Summer Time Act, 1916.
369#
370# This specifically states that it applies to Ireland, specifies dates of
371# 21 May and 1 October and times of 02:00, and says that in Ireland the
372# times relate to Dublin mean time. It specifies an offset of 1 hour.
373#
374# - The Time (Ireland) Act, 1916
375#
376# This abolishes Dublin mean time on 02:00 DMT 1 October 1916.
377# It repeals that section of the Statutes (Definition of Time) Act, 1880
378# that specifies DMT. It is therefore a safe bet that DMT existed at least
379# from 1880 and was the only alternative standard time in the UK.
380#
381# - The Summer Time Act, 1922
382#
383# This specifies an offset of 1 hour and dates of the day after the third
384# Saturday in April, unless that be Easter, in which case it is the day after
385# the second Saturday, and the day after the third Saturday in September.
386# The time is 02:00 GMT. It applied in 1922 and 1923, and longer if Parliament
387# so approved.
388#
389# It specifically states that it applies to Northern Ireland, the Channel
390# Islands, and the Isle of Man.
391#
392# - The Summer Time Act, 1925
393#
394# This makes the 1922 Act permanent, with a change to the end date to the
395# day after the first Saturday in October. It says nothing about extent,
396# so that part of the 1922 Act will still apply.
397#
398# - The Defence (Summer Time) Regulations, 1939, SR&O 1939 No. 1379
399# [SR&O == Statutary Regulation and Order]
400#
401# These were made under the Emergency Powers (Defence) Act, 1939.
402# It changes the end date to be the day after the third Saturday in November.
403# It makes consequential changes to some vehicle lighting legislation,
404# which includes the Motor Vehicles and Road Traffic (Northern Ireland) Act,
405# 1934, so it seems clear it applies in Northern Ireland.
406#
407# - An Order in Council amending the The Defence (Summer Time) Regulations,
408# 1939, SR&O 1940 No. 1883
409#
410# This continues summer time throughout the year after it starts in 1940.
411# It says nothing about extent and has no consequential changes.
412#
413# - An Order in Council amending the The Defence (Summer Time) Regulations,
414# 1939, SR&O 1941 No. 476
415#
416# This introduces double summer time, starting at 01:00 GMT on the day after
417# the first Saturday in May and ending at 01:00 GMT on the day after the
418# second Saturday in August, offset another hour from normal summer time,
419# which continues throughout the rest of the year. It goes on a lot about
420# consequential changes to agricultural wages legislation, and says in part
421# `... and in its application to Northern Ireland have effect as
422# if for the references to the Agricultural Wages (Regulation) Acts, 1924 and
423# 1940, there were substituted references to the Agricultural Wages (Regulation)
424# Acts (Northern Ireland), 1939 and 1940, ...'. It also has a similar section
425# for Scotland. Both sections substitute the local Agricultural Wages Board
426# for the Agricultural Wages Board for England and Wales, showing that
427# England and Wales were indivisible.
428#
429# - An Order in Council amending the The Defence (Summer Time) Regulations,
430# 1939, SR&O 1942 No. 506
431#
432# This changes the start date of double summer time to the day after the first
433# Saturday in April. It says nothing about extent.
434#
435# - An Order in Council amending the The Defence (Summer Time) Regulations,
436# 1939, SR&O 1944 No. 932
437#
438# This changed the end date of double summer time to 17 September 1944.
439# (I don't have the text of this, just a note of what it did, the text almost
440# certainly had the `day after the nth Saturday' form.)
441#
442# (I am missing whatever regulations there were to change things in 1945
443# and the Summer Time Act, 1947.)
444#
445# - The British Standard Time Act, 1968
446#
447# This came into force on 27 October 1968 and continued summer time throughout
448# the year as an experiment until it expired on 31 October 1971.
449# There was no double summer time so we didn't have to change the clocks at all.
450# It specifically said it applied to Northern Ireland. It also said it
451# applied to Jersey, Guernsey and the Isle of Man unless they passed
452# measures saying it didn't.
453#
454# - The Manx Time Act, 1968
455#
456# This is an Act of Tynwald (the Isle of Man Parliament) that said that
457# henceforth Manx time would be the same as the time in Great Britain.
458#
459# - The Summer Time Act, 1972
460#
461# This specified a reversion to normal summer time behaviour with a start
462# date of the day after the third Saturday in March, unless that is Easter,
463# when it is the day after the second Saturday, and an end date of the day
464# after the fourth Saturday in October. Times are at 02:00 GMT, offset is
465# 1 hour.
466#
467# It has the same wording about extent as the British Standard Time Act, 1968,
468# applying to Northern Ireland unconditionally and to Jersey, Guernsey and the
469# Isle of Man if they don't do something about it.
470#
471# (I am missing various Summer Time Orders that modified the 1972 Act to
472# harmonise with the EC since 1981. The major change is that the time changes
473# to 01:00 GMT.)
474#
475# - The Summer Time Order, 1992, SI 1992/1729 [SI == Statutary Instrument]
476#
477# This specifies dates of:
478# Start End
479# 1993 28 March 24 October
480# 1994 27 March 23 October
481# All start and end times are at 01:00 GMT.
482# This is as far as it goes at present. A new EC directive is expected soon
483# and this will lead to a new Summer Time Order implementing it in the UK.
484#
485# - Some text on the extent of Acts, from Halsbury's Statutes
486#
487# `An Act of the United Kingdom Parliament is to be construed prima facie
488# to apply to the whole of the United Kingdom and not to any place outside.
489# [...] The expression "United Kingdom" for this purpose includes (since
490# 1922) Great Britain (ie. England, Wales and Scotland) and Northern Ireland,
491# but it does not include the Channel Islands or the Isle of Man.'
492#
493# So, many of these measures specifically include Northern Ireland,
494# the Channel Islands and the Isle of Man. None of them exclude any
495# part of the UK. The default interpretation of Acts is that they apply
496# throughout the UK.
497#
498# With that, I rest my case Milud :-)
499#
500# Thanks are due to my learned legal friend Lorna Montgomerie, who dug out
501# the dusty old statutes, and to Melanie Allison of the Ministry of Defence,
502# who provided the wartime regulations and a snippet of Hansard explaining
503# why double summer time started on a Monday in 1945 (it was Easter).
504
505# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
506#
507# As Ilieve remarks, the date `20 April 1924' in the table of ``Summer Time: A
508# Consultation Document'' (Cm 722, 1989) table is a transcription error;
509# 20 April was an Easter Sunday. Shanks has 13 April, the correct date.
510# Also, the table is not quite right for 1925 through 1938; the correct rules
511# (which Shanks uses) are given in the Summer Time Acts of 1922 and 1925.
512# Shanks and the UK Government paper disagree about the Apr 1956 transition;
513# since we have no other data, and since Shanks was correct in the other
514# points of disagreement about London, we'll believe Shanks for now.
515# Also, for lack of other data, we'll follow Shanks for Eire in 1940-1948.
516#
517# Given Peter Ilieve's comments, the following claims by Shanks are incorrect:
518# * Wales did not switch from GMT to daylight savings time until
519# 1921 Apr 3, when they began to conform with the rest of Great Britain.
520# Actually, Wales was identical after 1880.
521# * Eire had two transitions on 1916 Oct 1.
522# It actually just had one transition.
523# * Northern Ireland used single daylight savings time throughout WW II.
524# Actually, it conformed to Britain.
525#
526# The following claim by Shanks is possible though doubtful;
527# we'll ignore it for now.
528# * Jersey, Guernsey, and the Isle of Man did not switch from GMT
529# to daylight savings time until 1921 Apr 3, when they began to
530# conform with Great Britain.
531
15637ed4 532# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
ecdde2d7 533Rule GB-Eire 1847 only - Sep 22 0:00 0 GMT
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534# 1916 to 1925--irregular
535Rule GB-Eire 1916 only - May 21 2:00s 1:00 BST
536Rule GB-Eire 1916 only - Oct 1 2:00s 0 GMT
537Rule GB-Eire 1917 only - Apr 8 2:00s 1:00 BST
538Rule GB-Eire 1917 only - Sep 17 2:00s 0 GMT
539Rule GB-Eire 1918 only - Mar 24 2:00s 1:00 BST
540Rule GB-Eire 1918 only - Sep 30 2:00s 0 GMT
541Rule GB-Eire 1919 only - Mar 30 2:00s 1:00 BST
542Rule GB-Eire 1919 only - Sep 29 2:00s 0 GMT
ecdde2d7 543Rule GB-Eire 1920 only - Mar 28 2:00s 1:00 BST
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544Rule GB-Eire 1920 only - Oct 25 2:00s 0 GMT
545Rule GB-Eire 1921 only - Apr 3 2:00s 1:00 BST
546Rule GB-Eire 1921 only - Oct 3 2:00s 0 GMT
547Rule GB-Eire 1922 only - Mar 26 2:00s 1:00 BST
548Rule GB-Eire 1922 only - Oct 8 2:00s 0 GMT
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549Rule GB-Eire 1923 only - Apr Sun>=16 2:00s 1:00 BST
550Rule GB-Eire 1923 1924 - Sep Sun>=16 2:00s 0 GMT
1bd76676 551Rule GB-Eire 1924 only - Apr 13 2:00s 1:00 BST
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552# 1925 to 1939 start--regular, except for avoiding Easter
553Rule GB-Eire 1925 1926 - Apr Sun>=16 2:00s 1:00 BST
554Rule GB-Eire 1925 1938 - Oct Sun>=2 2:00s 0 GMT
555Rule GB-Eire 1927 only - Apr 10 2:00s 1:00 BST
556Rule GB-Eire 1928 1929 - Apr Sun>=16 2:00s 1:00 BST
557Rule GB-Eire 1930 only - Apr 13 2:00s 1:00 BST
558Rule GB-Eire 1931 1932 - Apr Sun>=16 2:00s 1:00 BST
559Rule GB-Eire 1933 only - Apr 9 2:00s 1:00 BST
560Rule GB-Eire 1934 only - Apr Sun>=16 2:00s 1:00 BST
561Rule GB-Eire 1935 only - Apr 14 2:00s 1:00 BST
562Rule GB-Eire 1936 1937 - Apr Sun>=16 2:00s 1:00 BST
563Rule GB-Eire 1938 only - Apr 10 2:00s 1:00 BST
564Rule GB-Eire 1939 only - Apr Sun>=16 2:00s 1:00 BST
1bd76676
GW
565# 1939 end to 1947--irregular, and with double summer time
566Rule GB-Eire 1939 only - Nov 19 2:00s 0 GMT
567Rule GB-Eire 1940 only - Feb 25 2:00s 1:00 BST
ecdde2d7
GW
568Rule GB-Eire 1941 only - May Sun>=2 1:00s 2:00 DST
569Rule GB-Eire 1941 1943 - Aug Sun>=9 1:00s 1:00 BST
570Rule GB-Eire 1942 1944 - Apr Sun>=2 1:00s 2:00 DST
571Rule GB-Eire 1944 only - Sep Sun>=16 1:00s 1:00 BST
572# Double daylight starts on a Monday in 1945--see above.
573Rule GB-Eire 1945 only - Apr 2 1:00s 2:00 DST
574Rule GB-Eire 1945 only - Jul 15 1:00s 1:00 BST
1bd76676
GW
575Rule GB-Eire 1945 only - Oct 7 2:00s 0 GMT
576Rule GB-Eire 1946 only - Apr 14 2:00s 1:00 BST
577Rule GB-Eire 1946 only - Oct 6 2:00s 0 GMT
578Rule GB-Eire 1947 only - Mar 16 2:00s 1:00 BST
ecdde2d7
GW
579Rule GB-Eire 1947 only - Apr 13 1:00s 2:00 DST
580Rule GB-Eire 1947 only - Aug 10 1:00s 1:00 BST
1bd76676
GW
581Rule GB-Eire 1947 only - Nov 2 2:00s 0 GMT
582# So much for double saving time. 1948 and 1949, irregular.
583Rule GB-Eire 1948 only - Mar 14 2:00s 1:00 BST
ecdde2d7 584Rule GB-Eire 1948 1949 - Oct lastSun 2:00s 0 GMT
1bd76676 585Rule GB-Eire 1949 only - Apr 3 2:00s 1:00 BST
1bd76676
GW
586# 1950 through start of 1953, regular.
587Rule GB-Eire 1950 1953 - Apr Sun>=14 2:00s 1:00 BST
588Rule GB-Eire 1950 1952 - Oct Sun>=21 2:00s 0 GMT
589# 1954 to 1980, starting rules
590Rule GB-Eire 1954 only - Apr 11 2:00s 1:00 BST
ecdde2d7
GW
591Rule GB-Eire 1955 1956 - Apr Sun>=16 2:00s 1:00 BST
592Rule GB-Eire 1957 only - Apr 14 2:00s 1:00 BST
593Rule GB-Eire 1958 1959 - Apr Sun>=16 2:00s 1:00 BST
1bd76676
GW
594Rule GB-Eire 1960 only - Apr 10 2:00s 1:00 BST
595Rule GB-Eire 1961 1963 - Mar lastSun 2:00s 1:00 BST
596Rule GB-Eire 1964 1967 - Mar Sun>=19 2:00s 1:00 BST
597Rule GB-Eire 1972 1980 - Mar Sun>=16 2:00s 1:00 BST
598# 1953 to 1980, ending rules
599Rule GB-Eire 1953 1960 - Oct Sun>=1 2:00s 0 GMT
600Rule GB-Eire 1961 1967 - Oct Sun>=23 2:00s 0 GMT
ecdde2d7 601Rule GB-Eire 1971 only - Oct 31 3:00 0 GMT
1bd76676 602Rule GB-Eire 1972 1980 - Oct Sun>=23 2:00s 0 GMT
15637ed4
RG
603# Current rules
604Rule GB-Eire 1981 max - Mar lastSun 1:00s 1:00 BST
1bd76676 605Rule GB-Eire 1981 max - Oct Sun>=23 1:00s 0 GMT
15637ed4 606
ecdde2d7
GW
607# Zone NAME GMTOFF RULES FORMAT [UNTIL]
608Zone Europe/London -0:00:37 - LMT 1847 Sep 22
609 0:00 GB-Eire %s 1968 Feb 18 2:00
610 1:00 - BST 1971 Oct 31 2:00
611 0:00 GB-Eire %s
612Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2
613 -0:25 - DMT 1916 May 21 2:00 # Dublin MT
614 -0:25 1:00 DST 1916 Oct 1 3:00
615 0:00 GB-Eire %s 1968 Feb 18 2:00
616 1:00 - BST 1971 Oct 31 3:00
617 0:00 GB-Eire %s
618Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2
619 -0:25 - DMT 1916 May 21 2:00 # Dublin MT
620 -0:25 1:00 DST 1916 Oct 1 3:00
621 0:00 GB-Eire %s 1940 Feb 25 2:00
622 0:00 1:00 BST 1946 Oct 6 2:00
623 0:00 - GMT 1947 Mar 16 2:00
624 0:00 1:00 BST 1947 Nov 2 2:00
625 0:00 - GMT 1948 Apr 18 2:00
626 0:00 GB-Eire %s 1968 Feb 18 2:00
627 1:00 - BST 1971 Oct 31 3:00
628 0:00 GB-Eire %s
15637ed4
RG
629
630###############################################################################
631
632# Continental Europe
633
ecdde2d7
GW
634Rule W-Eur 1800 only - Jan 1 0:00 0 -
635Rule W-Eur 1977 1980 - Apr Sun>=1 1:00s 1:00 " DST"
636Rule W-Eur 1977 only - Sep lastSun 1:00s 0 -
637Rule W-Eur 1978 only - Oct 1 1:00s 0 -
638Rule W-Eur 1979 max - Sep lastSun 1:00s 0 -
1bd76676 639Rule W-Eur 1981 max - Mar lastSun 1:00s 1:00 " DST"
15637ed4 640
ecdde2d7
GW
641Rule M-Eur 1800 only - Jan 1 0:00 0 -
642Rule M-Eur 1916 only - Apr 30 23:00 1:00 " DST"
643Rule M-Eur 1916 only - Oct 1 1:00 0 -
644Rule M-Eur 1917 1918 - Apr Mon>=15 2:00s 1:00 " DST"
645Rule M-Eur 1917 1918 - Sep Mon>=15 2:00s 0 -
646Rule M-Eur 1940 only - Apr 1 2:00s 1:00 " DST"
647Rule M-Eur 1942 only - Nov 2 2:00s 0 -
648Rule M-Eur 1943 only - Mar 29 2:00s 1:00 " DST"
649Rule M-Eur 1943 only - Oct 4 2:00s 0 -
650Rule M-Eur 1944 only - Apr 3 2:00s 1:00 " DST"
651Rule M-Eur 1944 only - Oct 2 2:00s 0 -
652Rule M-Eur 1977 1980 - Apr Sun>=1 2:00s 1:00 " DST"
653Rule M-Eur 1977 only - Sep lastSun 2:00s 0 -
654Rule M-Eur 1978 only - Oct 1 2:00s 0 -
655Rule M-Eur 1979 max - Sep lastSun 2:00s 0 -
1bd76676 656Rule M-Eur 1981 max - Mar lastSun 2:00s 1:00 " DST"
15637ed4 657
1bd76676
GW
658Rule E-Eur 1981 max - Mar lastSun 3:00s 1:00 " DST"
659Rule E-Eur 1981 max - Sep lastSun 3:00s 0 -
15637ed4 660
ecdde2d7
GW
661# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
662Rule Russia 1880 only - Jan 1 0:00 0 -
663Rule Russia 1917 only - Jul 1 23:00 1:00 " DST"
664Rule Russia 1917 only - Dec 28 0:00 0 -
665Rule Russia 1918 only - May 31 22:00 2:00 " DDST"
666Rule Russia 1918 only - Sep 17 0:00 1:00 " DST"
667Rule Russia 1919 only - May 31 23:00 2:00 " DDST"
668Rule Russia 1919 only - Jul 1 2:00 1:00 D
669Rule Russia 1919 only - Aug 16 0:00 0 K
670Rule Russia 1921 only - Feb 14 23:00 1:00 D
671# Shanks gives 1921 Mar 21 for the following transition.
672# From Andrew A. Chernov <ache@astral.msk.su> (November 12, 1993):
673# My sources says, that it is Mar 20, not 21.
674Rule Russia 1921 only - Mar 20 23:00 2:00 DD
675Rule Russia 1921 only - Sep 1 0:00 1:00 D
676Rule Russia 1921 only - Oct 1 0:00 0 K
677Rule Russia 1981 1984 - Apr 1 0:00 1:00 D
678Rule Russia 1981 1983 - Oct 1 0:00 0 K
679Rule Russia 1984 1990 - Sep lastSun 2:00s 0 K
680Rule Russia 1985 1990 - Mar lastSun 2:00s 1:00 D
681Rule Russia 1992 max - Sep lastSun 2:00s 0 K
682Rule Russia 1992 max - Mar lastSun 2:00s 1:00 D
15637ed4 683
ecdde2d7 684# These are for backward compatibility with older versions.
15637ed4 685
ecdde2d7
GW
686# Zone NAME GMTOFF RULES FORMAT [UNTIL]
687Zone WET 0:00 W-Eur WET%s
688Zone MET 1:00 M-Eur MET%s
689Zone EET 2:00 E-Eur EET%s
690Zone W-SU 3:00 M-Eur ????
15637ed4
RG
691
692# Tom Hoffman says that MET is also known as Central European Time
693
694Link MET CET
695
ecdde2d7
GW
696# Albania
697# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
698Rule Albania 1940 only - Jun 16 0:00 1:00 " DST"
699Rule Albania 1942 only - Nov 2 3:00 0 -
700Rule Albania 1943 only - Mar 29 2:00 1:00 " DST"
701Rule Albania 1943 only - Apr 10 3:00 0 -
702Rule Albania 1974 only - May 4 0:00 1:00 " DST"
703Rule Albania 1974 only - Oct 2 0:00 0 -
704Rule Albania 1975 only - May 1 0:00 1:00 " DST"
705Rule Albania 1975 only - Oct 2 0:00 0 -
706Rule Albania 1976 only - May 2 0:00 1:00 " DST"
707Rule Albania 1976 only - Oct 3 0:00 0 -
708Rule Albania 1977 only - May 8 0:00 1:00 " DST"
709Rule Albania 1977 only - Oct 2 0:00 0 -
710Rule Albania 1978 only - May 6 0:00 1:00 " DST"
711Rule Albania 1978 only - Oct 1 0:00 0 -
712Rule Albania 1979 only - May 5 0:00 1:00 " DST"
713Rule Albania 1979 only - Sep 30 0:00 0 -
714Rule Albania 1980 only - May 3 0:00 1:00 " DST"
715Rule Albania 1980 only - Oct 4 0:00 0 -
716Rule Albania 1981 only - Apr 26 0:00 1:00 " DST"
717Rule Albania 1981 only - Sep 27 0:00 0 -
718Rule Albania 1982 only - May 2 0:00 1:00 " DST"
719Rule Albania 1982 only - Oct 3 0:00 0 -
720Rule Albania 1983 only - Apr 18 0:00 1:00 " DST"
721Rule Albania 1983 only - Oct 1 0:00 0 -
722Rule Albania 1984 only - Apr 1 0:00 1:00 " DST"
723Rule Albania 1984 only - Oct 1 0:00 0 -
724# Zone NAME GMTOFF RULES FORMAT [UNTIL]
725Zone Europe/Tirane 1:19:20 - LMT 1914
726 1:00 - MET 1940 Jun 16
727 1:00 Albania MET%s 1985 Mar 31 1:00
728 1:00 W-Eur MET%s
729
730# Andorra
731# Zone NAME GMTOFF RULES FORMAT [UNTIL]
732Zone Europe/Andorra 0:06:04 - LMT 1901
733 0:00 - WET 1946 Sep 30
734 1:00 - MET 1985 Mar 31 2:00
735 1:00 M-Eur MET%s
736
737# Austria
738# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
739Rule Austria 1918 only - Jun 16 3:00 0 -
740Rule Austria 1920 only - Apr 5 2:00s 1:00 " DST"
741Rule Austria 1920 only - Sep 13 2:00s 0 -
742Rule Austria 1945 only - Apr 2 2:00s 1:00 " DST"
743Rule Austria 1945 only - Nov 18 2:00s 0 -
744Rule Austria 1946 only - Apr 14 2:00s 1:00 " DST"
745Rule Austria 1946 1948 - Oct Sun>=1 2:00s 0 -
746Rule Austria 1947 only - Apr 6 2:00s 1:00 " DST"
747Rule Austria 1948 only - Apr 18 2:00s 1:00 " DST"
748# Zone NAME GMTOFF RULES FORMAT [UNTIL]
749Zone Europe/Vienna 1:05:20 - LMT 1893 Apr
750 1:00 M-Eur MET%s 1918 Jun 16 3:00
751 1:00 Austria MET%s 1940 Apr 1 2:00
752 1:00 M-Eur MET%s 1945 Apr 2 2:00
753 1:00 Austria MET%s 1981 Mar 29 2:00
754 1:00 M-Eur MET%s
755
756# Belarus
757# Zone NAME GMTOFF RULES FORMAT [UNTIL]
758Zone Europe/Minsk 1:50:16 - LMT 1880
759 2:31 Russia LST%s 1919 Jul 1 2:00
760 3:00 Russia MS%s 1922 Oct
761 2:00 - EET 1930 Jun 21
762 3:00 Russia MS%s 1991 Sep 29 3:00
763 2:00 Russia MS%s
764
765# Belgium
766# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
767Rule Belgium 1919 only - Mar 1 23:00s 1:00 " DST"
768Rule Belgium 1919 only - Oct 4 23:00s 0 -
769Rule Belgium 1920 only - Feb 14 23:00s 1:00 " DST"
770Rule Belgium 1920 only - Oct 23 23:00s 0 -
771Rule Belgium 1921 only - Mar 14 23:00s 1:00 " DST"
772Rule Belgium 1921 only - Oct 25 23:00s 0 -
773Rule Belgium 1922 only - Mar 25 23:00s 1:00 " DST"
774Rule Belgium 1922 1928 - Oct Sat>=1 23:00s 0 -
775Rule Belgium 1923 only - Apr 21 23:00s 1:00 " DST"
776Rule Belgium 1924 only - Mar 29 23:00s 1:00 " DST"
777Rule Belgium 1925 only - Apr 5 23:00s 1:00 " DST"
778Rule Belgium 1926 only - Apr 17 23:00s 1:00 " DST"
779Rule Belgium 1927 only - Apr 9 23:00s 1:00 " DST"
780Rule Belgium 1928 only - Apr 14 23:00s 1:00 " DST"
781Rule Belgium 1929 1938 - Oct Sun>=2 2:00s 0 -
782Rule Belgium 1929 only - Apr 21 2:00s 1:00 " DST"
783Rule Belgium 1930 only - Apr 13 2:00s 1:00 " DST"
784Rule Belgium 1931 only - Apr 19 2:00s 1:00 " DST"
785Rule Belgium 1932 only - Apr 17 2:00s 1:00 " DST"
786Rule Belgium 1933 only - Mar 26 2:00s 1:00 " DST"
787Rule Belgium 1934 only - Apr 8 2:00s 1:00 " DST"
788Rule Belgium 1935 only - Mar 31 2:00s 1:00 " DST"
789Rule Belgium 1936 only - Apr 19 2:00s 1:00 " DST"
790Rule Belgium 1937 only - Apr 4 2:00s 1:00 " DST"
791Rule Belgium 1938 only - Mar 27 2:00s 1:00 " DST"
792Rule Belgium 1939 only - Apr 16 2:00s 1:00 " DST"
793Rule Belgium 1939 only - Nov 19 2:00s 0 -
794Rule Belgium 1945 only - Apr 2 2:00s 1:00 " DST"
795Rule Belgium 1945 only - Sep 16 2:00s 0 -
796Rule Belgium 1946 only - May 19 2:00s 1:00 " DST"
797Rule Belgium 1946 only - Oct 7 2:00s 0 -
798# Zone NAME GMTOFF RULES FORMAT [UNTIL]
799Zone Europe/Brussels 0:17:20 - LMT 1880
800 0:17 - BST 1892 May 1 12:00
801 0:00 - WET 1914 Aug 4
802 1:00 M-Eur MET%s 1919 Mar 1 23:00
803 0:00 Belgium WET%s 1940 Feb 24 23:00
804 1:00 M-Eur MET%s 1945 Apr 2 2:00
805 1:00 Belgium MET%s 1977 Apr 3 2:00
806 1:00 M-Eur MET%s
807
808# Bosnia and Herzegovina
809# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
810# Zone NAME GMTOFF RULES FORMAT [UNTIL]
811Zone Europe/Sarajevo 1:13:40 - LMT 1884
812 1:00 - MET 1941 Apr 18 23:00
813 1:00 M-Eur MET%s 1945 May 8 2:00s
814 1:00 1:00 "MET DST" 1945 Sep 16 2:00s
815 1:00 - MET 1983 Mar 27 2:00s
816 1:00 M-Eur MET%s
817
818# Bulgaria
819# Part switched from the Julian to the Gregorian calendar on 1915 Nov 14;
820# the rest switched on 1920 Sep 17.
821# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
822Rule Bulg 1979 only - Mar 31 23:00 1:00 " DST"
823Rule Bulg 1979 only - Oct 1 1:00 0 -
824Rule Bulg 1980 1982 - Apr Sat<=7 23:00 1:00 " DST"
825Rule Bulg 1980 only - Sep 29 1:00 0 -
826Rule Bulg 1981 only - Sep 27 2:00 0 -
827# Zone NAME GMTOFF RULES FORMAT [UNTIL]
828Zone Europe/Sofia 1:33:16 - LMT 1880
829 1:57 - TST 1894 Nov 30
830 2:00 - EET 1942 Nov 2 3:00
831 1:00 M-Eur MET%s 1945 Apr 2 3:00
832 2:00 - EET 1979 Mar 31 23:00
833 2:00 Bulg EET%s 1982 Sep 26 2:00
834 2:00 M-Eur EET%s
835
836# Croatia
837# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
838# Zone NAME GMTOFF RULES FORMAT [UNTIL]
839Zone Europe/Zagreb 1:03:52 - LMT 1884
840 1:00 - MET 1941 Apr 18 23:00
841 1:00 M-Eur MET%s 1945 May 8 2:00s
842 1:00 1:00 "MET DST" 1945 Sep 16 2:00s
843 1:00 - MET 1983 Mar 27 2:00s
844 1:00 M-Eur MET%s
845
846# Czech Republic
847# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
848Rule Czech 1944 only - Sep 17 2:00s 0 -
849Rule Czech 1945 only - Apr 8 2:00s 1:00 " DST"
850Rule Czech 1945 only - Nov 18 2:00s 0 -
851Rule Czech 1946 only - May 6 2:00s 1:00 " DST"
852Rule Czech 1946 1949 - Oct Sun>=1 2:00s 0 -
853Rule Czech 1947 only - Apr 20 2:00s 1:00 " DST"
854Rule Czech 1948 only - Apr 18 2:00s 1:00 " DST"
855Rule Czech 1949 only - Apr 9 2:00s 1:00 " DST"
856# Zone NAME GMTOFF RULES FORMAT [UNTIL]
857Zone Europe/Prague 0:57:44 - LMT 1850
858 0:58 - PMT 1891 Oct # Prague Mean Time
859 1:00 M-Eur MET%s 1944 Sep 17 2:00s
860 1:00 Czech MET%s 1979 Apr 1 2:00
861 1:00 M-Eur MET%s
862
863# Denmark
864# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
865Rule Denmark 1916 only - May 14 23:00 1:00 " DST"
866Rule Denmark 1916 only - Sep 30 23:00 0 -
867Rule Denmark 1940 only - May 15 0:00 1:00 " DST"
868Rule Denmark 1945 only - Apr 2 2:00s 1:00 " DST"
869Rule Denmark 1945 only - Aug 15 2:00s 0 -
870Rule Denmark 1946 only - May 1 2:00s 1:00 " DST"
871Rule Denmark 1946 only - Sep 1 2:00s 0 -
872Rule Denmark 1947 only - May 4 2:00s 1:00 " DST"
873Rule Denmark 1947 only - Aug 10 2:00s 0 -
874Rule Denmark 1948 only - May 9 2:00s 1:00 " DST"
875Rule Denmark 1948 only - Aug 8 2:00s 0 -
876# Zone NAME GMTOFF RULES FORMAT [UNTIL]
877Zone Europe/Copenhagen 0:50:20 - LMT 1890
878 0:50 - CMT 1894 # Copenhagen Mean Time
879 1:00 Denmark MET%s 1942 Nov 2 2:00s
880 1:00 M-Eur MET%s 1945 Apr 2 2:00
881 1:00 Denmark MET%s 1980 Apr 6 2:00
882 1:00 M-Eur MET%s
883Zone Atlantic/Faeroe 0:27:04 - LMT 1908 Jan 11 # Torshavn
884 0:00 - WET 1981 Mar 29 1:00
885 0:00 W-Eur WET%s
886Zone America/Scoresbysund -1:29:00 - LMT 1916 Jul 28
887 -2:00 - MGT 1980 Apr 6 2:00
888 -2:00 M-Eur MGT%s 1981 Mar 29
889 -1:00 M-Eur EGT%s
890Zone America/Godthab -3:26:56 - LMT 1916 Jul 28
891 -3:00 - WGT 1980 Apr 6 2:00
892 -3:00 M-Eur WGT%s
893Zone America/Thule -4:35:08 - LMT 1916 Jul 28
894 -4:00 - AST
895
896# Estonia
897# They switched from the Julian to the Gregorian calendar on 1918 Feb 15.
898# Zone NAME GMTOFF RULES FORMAT [UNTIL]
899Zone Europe/Tallinn 1:39:00 - LMT 1880
900 1:39 - LST 1918 Feb
901 1:00 M-Eur MET%s 1919 Jul
902 1:39 - LST 1921 May
903 2:00 - EET 1940 Aug 6
904 3:00 - MSK 1941 Sep 15
905 1:00 M-Eur MET%s 1944 Sep 22
906 3:00 Russia MS%s 1989 Mar 26 2:00
907 2:00 M-Eur MET%s
908
909# Finland
910# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
911Rule Finland 1921 only - May 1 0:00 0 -
912Rule Finland 1942 only - Apr 3 0:00 1:00 " DST"
913Rule Finland 1942 only - Oct 3 0:00 0 -
914# Zone NAME GMTOFF RULES FORMAT [UNTIL]
915Zone Europe/Helsinki 1:39:52 - LMT 1878 May 31
916 1:40 - HMT 1921 May # Helsinki Mean Time
917 2:00 Finland EET%s 1981 Mar 29 2:00
918 2:00 M-Eur EET%s
919
920# France
921# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
922Rule France 1911 only - Mar 11 0:00 0 -
923Rule France 1916 only - Jun 14 23:00s 1:00 " DST"
924Rule France 1916 1919 - Oct Sun>=7 23:00s 0 -
925Rule France 1917 only - Mar 24 23:00s 1:00 " DST"
926Rule France 1918 only - Mar 9 23:00s 1:00 " DST"
927Rule France 1919 only - Mar 1 23:00s 1:00 " DST"
928Rule France 1920 only - Feb 14 23:00s 1:00 " DST"
929Rule France 1920 only - Oct 23 23:00s 0 -
930Rule France 1921 only - Mar 14 23:00s 1:00 " DST"
931Rule France 1921 only - Oct 25 23:00s 0 -
932Rule France 1922 only - Mar 25 23:00s 1:00 " DST"
933Rule France 1922 1938 - Oct Sat>=1 23:00s 0 -
934Rule France 1923 only - May 26 23:00s 1:00 " DST"
935Rule France 1924 only - Mar 29 23:00s 1:00 " DST"
936Rule France 1925 only - Apr 4 23:00s 1:00 " DST"
937Rule France 1926 only - Apr 17 23:00s 1:00 " DST"
938Rule France 1927 only - Apr 9 23:00s 1:00 " DST"
939Rule France 1928 only - Apr 14 23:00s 1:00 " DST"
940Rule France 1929 only - Apr 20 23:00s 1:00 " DST"
941Rule France 1930 only - Apr 12 23:00s 1:00 " DST"
942Rule France 1931 only - Apr 18 23:00s 1:00 " DST"
943Rule France 1932 only - Apr 2 23:00s 1:00 " DST"
944Rule France 1933 only - Mar 25 23:00s 1:00 " DST"
945Rule France 1934 only - Apr 7 23:00s 1:00 " DST"
946Rule France 1935 only - Mar 30 23:00s 1:00 " DST"
947Rule France 1936 only - Apr 18 23:00s 1:00 " DST"
948Rule France 1937 only - Apr 3 23:00s 1:00 " DST"
949Rule France 1938 only - Mar 26 23:00s 1:00 " DST"
950Rule France 1939 only - Apr 15 23:00s 1:00 " DST"
951Rule France 1939 only - Nov 18 23:00s 0 -
952Rule France 1940 only - Feb 25 2:00 1:00 " DST"
953# The French rules for 1941-1944 were not used in Paris,
954# but were used in other places (e.g. Monaco).
955Rule France 1941 only - May 5 0:00 2:00 " DDST"
956Rule France 1941 only - Oct 6 1:00 1:00 " DST"
957Rule France 1942 only - Mar 8 0:00 2:00 " DDST"
958Rule France 1942 only - Nov 2 3:00 1:00 " DST"
959Rule France 1943 only - Mar 29 2:00 2:00 " DDST"
960Rule France 1943 only - Nov 4 3:00 1:00 " DST"
961Rule France 1944 only - Apr 3 2:00 2:00 " DDST"
962Rule France 1944 only - Oct 8 1:00 1:00 " DST"
963Rule France 1945 only - Apr 2 2:00 2:00 " DDST"
964Rule France 1945 only - Sep 16 3:00 0 -
965# From Paul Eggert <eggert@twinsun.com) (November 18, 1993):
966# Shanks gives no times for 1975, but according to Cm722,
967# France introduced summer time in 1975 from 20 March to 22 September.
968Rule France 1975 only - Mar 20 2:00s 1:00 " DST"
969Rule France 1975 only - Sep 22 2:00s 0 -
970Rule France 1976 only - Mar 28 2:00s 1:00 " DST"
971Rule France 1976 only - Sep lastSun 2:00s 0 -
972# Zone NAME GMTOFF RULES FORMAT [UNTIL]
973Zone Europe/Paris 0:09:20 - LMT 1891 Mar 15 0:01
974 0:09 - PMT 1911 Mar 11 # Paris Mean Time
975 0:00 France WET%s 1940 Jun 14
976 1:00 M-Eur MET%s 1944 Aug 25
977 0:00 France WET%s 1945 Sep 16 3:00
978 1:00 France MET%s 1977 Apr Sun>=1 2:00
979 1:00 M-Eur MET%s
980
981# Germany
982# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
983Rule Germany 1945 only - Apr 2 2:00s 1:00 " DST"
984Rule Germany 1945 only - May 24 2:00 2:00 " DDST"
985Rule Germany 1945 only - Sep 24 3:00 1:00 " DST"
986Rule Germany 1945 only - Nov 18 2:00s 0 -
987Rule Germany 1946 only - Apr 14 2:00s 1:00 " DST"
988Rule Germany 1946 1949 - Oct Sun>=1 2:00s 0 -
989Rule Germany 1947 only - Apr 6 2:00s 1:00 " DST"
990Rule Germany 1947 only - May 11 2:00s 2:00 " DDST"
991Rule Germany 1947 only - Jun 29 3:00 1:00 " DST"
992Rule Germany 1948 only - Apr 18 2:00s 1:00 " DST"
993Rule Germany 1949 only - Apr 10 2:00s 1:00 " DST"
994# Zone NAME GMTOFF RULES FORMAT [UNTIL]
995Zone Europe/Berlin 0:53:28 - LMT 1893 Apr
996 1:00 M-Eur MET%s 1945 Apr 2 2:00
997 1:00 Germany MET%s 1980 Apr 6 2:00
998 1:00 M-Eur MET%s
999
1000# Gibraltar
1001# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1002Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2
1003 0:00 GB-Eire %s 1957 Apr 14 2:00
1004 1:00 - MET 1982 Mar 28 2:00
1005 1:00 M-Eur MET%s
1006
1007# Greece
1008# They adopted the Julian calendar in 1846.
1009# Part switched to the Gregorian calendar on 1916 Jul 28.
1010# The rest switched on 1920 Mar 18.
1011# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1012Rule Greece 1916 only - July 28 0:01 0 -
1013Rule Greece 1932 only - Jul 7 0:00 1:00 " DST"
1014Rule Greece 1932 only - Sep 1 0:00 0 -
1015Rule Greece 1941 only - Apr 7 0:00 1:00 " DST"
1016Rule Greece 1942 only - Nov 2 3:00 0 -
1017Rule Greece 1943 only - Mar 30 0:00 1:00 " DST"
1018Rule Greece 1943 only - Oct 4 0:00 0 -
1019Rule Greece 1952 only - Jul 1 0:00 1:00 " DST"
1020Rule Greece 1952 only - Nov 2 0:00 0 -
1021Rule Greece 1975 only - Apr 12 0:00s 1:00 " DST"
1022Rule Greece 1975 only - Nov 26 0:00s 0 -
1023Rule Greece 1976 only - Apr 11 2:00s 1:00 " DST"
1024Rule Greece 1976 only - Oct 10 2:00s 0 -
1025Rule Greece 1977 1978 - Apr Sun>=1 2:00s 1:00 " DST"
1026Rule Greece 1977 only - Sep 26 2:00s 0 -
1027Rule Greece 1978 only - Sep 24 4:00 0 -
1028Rule Greece 1979 only - Apr 1 9:00 1:00 " DST"
1029Rule Greece 1979 only - Sep 29 2:00 0 -
1030Rule Greece 1980 only - Apr 1 0:00 1:00 " DST"
1031Rule Greece 1980 only - Sep 28 0:00 0 -
1032# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1033Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
1034 1:35 - AMT 1916 Jul 28 0:01 # Athens MT
1035 2:00 Greece EET%s 1941 Apr 30
1036 1:00 Greece MET%s 1944 Apr 4
1037 2:00 Greece EET%s 1981 Mar 29 2:00
1038 2:00 M-Eur EET%s
1039
1040# Hungary
1041# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1042Rule Hungary 1918 only - Sep 29 2:00s 0 -
1043Rule Hungary 1919 only - Apr 15 3:00 1:00 " DST"
1044Rule Hungary 1919 only - Sep 15 3:00 0 -
1045Rule Hungary 1920 only - Apr 5 3:00 1:00 " DST"
1046Rule Hungary 1920 only - Sep 30 3:00 0 -
1047Rule Hungary 1945 only - May 1 23:00 1:00 " DST"
1048Rule Hungary 1945 only - Nov 3 0:00 0 -
1049Rule Hungary 1946 only - Mar 31 2:00s 1:00 " DST"
1050Rule Hungary 1946 1949 - Oct Sun>=1 2:00s 0 -
1051Rule Hungary 1947 1949 - Apr Sun>=4 2:00s 1:00 " DST"
1052Rule Hungary 1950 only - Apr 17 2:00s 1:00 " DST"
1053Rule Hungary 1950 only - Oct 23 2:00s 0 -
1054Rule Hungary 1954 1955 - May 23 0:00 1:00 " DST"
1055Rule Hungary 1954 1955 - Oct 3 0:00 0 -
1056Rule Hungary 1956 only - Jun Sun>=1 0:00 1:00 " DST"
1057Rule Hungary 1956 only - Sep lastSun 0:00 0 -
1058Rule Hungary 1957 only - Jun Sun>=1 1:00 1:00 " DST"
1059Rule Hungary 1957 only - Sep lastSun 3:00 0 -
1060Rule Hungary 1980 only - Apr 6 1:00 1:00 " DST"
1061# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1062Zone Europe/Budapest 1:16:20 - LMT 1890 Oct
1063 1:00 M-Eur MET%s 1918 Jul
1064 1:00 Hungary MET%s 1941 Apr 6 2:00
1065 1:00 M-Eur MET%s 1945 May 1 23:00
1066 1:00 Hungary MET%s 1980 Sep 28 2:00s
1067 1:00 M-Eur MET%s
1068
1069# Iceland
1070#
1071# From Adam David <adam@veda.is> (November 6, 1993):
1072# The name of the timezone in Iceland for system / mail / news purposes is GMT.
1073#
1074# From Shanks (1991):
1075# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1076Rule Iceland 1908 only - Jan 1 0:00 0 S
1077Rule Iceland 1917 1918 - Feb 20 2:00 1:00 D
1078Rule Iceland 1917 only - Oct 25 2:00 0 S
1079Rule Iceland 1918 1919 - Nov 15 2:00 0 S
1080Rule Iceland 1919 only - Feb 19 2:00 1:00 D
1081Rule Iceland 1921 only - Mar 19 2:00 1:00 D
1082Rule Iceland 1921 only - Jun 22 2:00 0 S
1083Rule Iceland 1941 1942 - Mar Sat>=1 2:00 1:00 D
1084Rule Iceland 1941 1942 - Jul 2 2:00 0 S
1085Rule Iceland 1943 1946 - Mar Sun>=1 2:00 1:00 D
1086Rule Iceland 1943 1948 - Oct Sun>=22 2:00 0 S
1087Rule Iceland 1947 1962 - Apr Sun>=1 2:00 1:00 D
1088Rule Iceland 1949 only - Oct 30 2:00 0 S
1089Rule Iceland 1950 only - Oct 22 2:00 0 S
1090# From Paul Eggert <eggert@twinsun.com) (November 18, 1993):
1091# Shanks's ``1953 Oct 26'' is probably a typo for Oct 25.
1092# Likewise, correct Shanks's ``1961 Oct 22'' to Oct 29.
1093Rule Iceland 1951 1967 - Oct Sun>=23 1:00s 0 S
1094Rule Iceland 1963 1968 - Apr Sun>=1 1:00s 1:00 D
1095# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1096Zone Atlantic/Reykjavik -1:27:24 - LMT 1837
1097 -1:28 - RMT 1908 # Reykjavik Mean Time
1098 -1:00 Iceland I%sT 1968 Oct 27 1:00s
1099 0:00 - GMT
1100
1101# Italy
1102# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1103Rule Italy 1893 only - Nov 1 0:00 0 S
1104Rule Italy 1916 only - Jun 4 0:00 1:00 " DST"
1105Rule Italy 1916 only - Oct 1 0:00 0 -
1106Rule Italy 1917 only - Apr 1 0:00 1:00 " DST"
1107Rule Italy 1917 only - Sep 30 0:00 0 -
1108Rule Italy 1918 only - Mar 10 0:00 1:00 " DST"
1109Rule Italy 1918 1919 - Oct Sun>=1 0:00 0 -
1110Rule Italy 1919 only - Mar 2 0:00 1:00 " DST"
1111Rule Italy 1920 only - Mar 21 0:00 1:00 " DST"
1112Rule Italy 1920 only - Sep 19 0:00 0 -
1113Rule Italy 1940 only - Jun 15 0:00 1:00 " DST"
1114Rule Italy 1945 only - Apr 2 2:00 1:00 " DST"
1115Rule Italy 1945 only - Sep 17 0:00 0 -
1116Rule Italy 1946 only - Mar 17 2:00s 1:00 " DST"
1117Rule Italy 1946 only - Oct 6 2:00s 0 -
1118Rule Italy 1947 only - Mar 16 0:00s 1:00 " DST"
1119Rule Italy 1947 only - Oct 5 0:00s 0 -
1120Rule Italy 1948 only - Feb 29 2:00s 1:00 " DST"
1121Rule Italy 1948 only - Oct 3 2:00s 0 -
1122Rule Italy 1966 1968 - May Sun>=22 0:00 1:00 " DST"
1123Rule Italy 1966 1969 - Sep Sun>=22 0:00 0 -
1124Rule Italy 1969 only - Jun 1 0:00 1:00 " DST"
1125Rule Italy 1970 only - May 31 0:00 1:00 " DST"
1126Rule Italy 1970 only - Sep lastSun 0:00 0 -
1127Rule Italy 1971 1972 - May Sun>=22 0:00 1:00 " DST"
1128Rule Italy 1971 only - Sep lastSun 1:00 0 -
1129Rule Italy 1972 only - Oct 1 0:00 0 -
1130Rule Italy 1973 only - Jun 3 0:00 1:00 " DST"
1131Rule Italy 1973 1974 - Sep lastSun 0:00 0 -
1132Rule Italy 1974 only - May 26 0:00 1:00 " DST"
1133Rule Italy 1975 only - Jun 1 0:00s 1:00 " DST"
1134Rule Italy 1975 1977 - Sep lastSun 0:00s 0 -
1135Rule Italy 1976 only - May 30 0:00s 1:00 " DST"
1136Rule Italy 1977 1979 - May Sun>=22 0:00s 1:00 " DST"
1137Rule Italy 1978 only - Oct 1 0:00s 0 -
1138Rule Italy 1979 only - Sep 30 0:00s 0 -
1139# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1140Zone Europe/Rome 0:49:56 - LMT 1866 Sep 22
1141 0:50 - RMT 1893 Nov # Rome Mean Time
1142 1:00 Italy MET%s 1942 Nov 2 2:00s
1143 1:00 M-Eur MET%s 1945 Apr 2 2:00s
1144 1:00 Italy MET%s 1980 Apr 6 2:00
1145 1:00 M-Eur MET%s
1146# Vatican is identical to Europe/Rome; San Marino is like Europe/Rome.
1147
1148# Latvia
1149# They switched from the Julian to the Gregorian calendar on 1918 Feb 15.
1150# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1151Zone Europe/Riga 1:36:24 - LMT 1880
1152 1:36 - LST 1918 Apr 15 2:00
1153 1:36 M-Eur LST%s 1919 Apr 1 2:00
1154 1:36 1:00 "LST DST" 1919 May 22 3:00
1155 1:36 - LST 1926 May 11
1156 2:00 - EET 1940 Aug 5
1157 3:00 - MSK 1941 Jul
1158 1:00 M-Eur MET%s 1944 Aug 8
1159 3:00 Russia MS%s 1991 Sep 29 3:00
1160 2:00 M-Eur MET%s
1161
1162# Liechtenstein
1163# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1164Zone Europe/Vaduz 0:30:04 - LMT 1894 Jun
1165 1:00 - MET 1981 Mar 29 2:00
1166 1:00 M-Eur MET%s
1167
1168# Lithuania
1169# They switched from the Julian to the Gregorian calendar on 1918 Feb 15.
1170# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1171Zone Europe/Vilnius 1:41:16 - LMT 1880
1172 1:24 - LST 1917 # Kaunas
1173 1:36 - LST 1919 Oct 10
1174 1:00 - MET 1920 Jul 12
1175 2:00 - EET 1920 Oct 9
1176 1:00 - MET 1940 Aug 3
1177 3:00 - MSK 1941 Jun 24
1178 1:00 M-Eur MET%s 1944 Aug
1179 3:00 Russia MS%s 1991 Sep 29 3:00
1180 2:00 M-Eur MET%s
1181
1182# Luxembourg
1183# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1184Rule Lux 1904 only - Jun 1 0:00 0 -
1185Rule Lux 1916 only - May 14 23:00 1:00 " DST"
1186Rule Lux 1916 only - Oct 1 1:00 0 -
1187Rule Lux 1917 only - Apr 28 23:00 1:00 " DST"
1188Rule Lux 1917 only - Sep 17 1:00 0 -
1189Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 " DST"
1190Rule Lux 1918 only - Sep Mon>=15 2:00s 0 -
1191Rule Lux 1919 only - Mar 1 23:00 1:00 " DST"
1192Rule Lux 1919 only - Oct 5 3:00 0 -
1193Rule Lux 1920 only - Feb 14 23:00 1:00 " DST"
1194Rule Lux 1920 only - Oct 24 2:00 0 -
1195Rule Lux 1921 only - Mar 14 23:00 1:00 " DST"
1196Rule Lux 1921 only - Oct 26 2:00 0 -
1197Rule Lux 1922 only - Mar 25 23:00 1:00 " DST"
1198Rule Lux 1922 only - Oct Sun>=2 1:00 0 -
1199Rule Lux 1923 only - Apr 21 23:00 1:00 " DST"
1200Rule Lux 1923 only - Oct Sun>=2 2:00 0 -
1201Rule Lux 1924 only - Mar 29 23:00 1:00 " DST"
1202Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 -
1203Rule Lux 1925 only - Apr 5 23:00 1:00 " DST"
1204Rule Lux 1926 only - Apr 17 23:00 1:00 " DST"
1205Rule Lux 1927 only - Apr 9 23:00 1:00 " DST"
1206Rule Lux 1928 only - Apr 14 23:00 1:00 " DST"
1207Rule Lux 1929 only - Apr 20 23:00 1:00 " DST"
1208# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1209Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun
1210 1:00 Lux MET%s 1918 Nov 25
1211 0:00 Lux WET%s 1929 Oct 6 2:00s
1212 0:00 Belgium WET%s 1940 May 14 3:00
1213 1:00 M-Eur WET%s 1944 Sep 18 3:00
1214 1:00 Belgium MET%s 1979 Apr 1 2:00
1215 1:00 M-Eur MET%s
1216
1217# The Former Yugoslav Republic of Macedonia
1218# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
1219# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1220Zone Europe/Skopje 1:25:44 - LMT 1884
1221 1:00 - MET 1941 Apr 18 23:00
1222 1:00 M-Eur MET%s 1945 May 8 2:00s
1223 1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1224 1:00 - MET 1983 Mar 27 2:00s
1225 1:00 M-Eur MET%s
1226
1227# Malta
1228# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1229Rule Malta 1973 only - Mar 31 0:00s 1:00 " DST"
1230Rule Malta 1973 only - Sep 29 0:00s 0 -
1231Rule Malta 1974 only - Apr 21 0:00s 1:00 " DST"
1232Rule Malta 1974 only - Sep 16 0:00s 0 -
1233Rule Malta 1975 1979 - Apr Sun>=15 2:00 1:00 " DST"
1234Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 -
1235Rule Malta 1980 only - Mar 31 2:00 1:00 " DST"
1236# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1237Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 # Valletta
1238 1:00 Italy MET%s 1942 Nov 2 2:00s
1239 1:00 M-Eur MET%s 1945 Apr 2 2:00s
1240 1:00 Italy MET%s 1973 Mar 31
1241 1:00 Malta MET%s 1981 Mar 29 2:00s
1242 1:00 M-Eur MET%s
1243
1244# Moldova
1245# They switched from the Julian to the Gregorian calendar on 1919 Mar 18.
1246# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1247Zone Europe/Chisinau 1:55:20 - LMT 1924 May 2
1248 2:00 - EET 1930 Jun 21
1249 3:00 - MSK 1981 Apr
1250 3:00 Russia MS%s 1991 Sep 29 2:00s
1251 2:00 M-Eur EET%s
1252
1253# Monaco
1254# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1255Zone Europe/Monaco 0:29:32 - LMT 1891 Mar 15
1256 0:09 - PMT 1911 Mar 11 # Paris Mean Time
1257 0:00 France WET%s 1945 Sep 16 3:00
1258 1:00 France MET%s 1977 Apr Sun>=1 2:00
1259 1:00 M-Eur MET%s
1260
1261# Netherlands
1262# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1263Rule Neth 1892 only - May 1 0:00 0 AMT
1264Rule Neth 1916 only - May 1 0:00 1:00 NST
1265Rule Neth 1916 only - Oct 1 0:00 0 AMT
1266Rule Neth 1917 only - Apr 16 2:00s 1:00 NST
1267Rule Neth 1917 only - Sep 17 2:00s 0 AMT
1268Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST
1269Rule Neth 1918 1921 - Sep Mon>=24 2:00s 0 AMT
1270Rule Neth 1922 only - Mar 26 2:00s 1:00 NST
1271Rule Neth 1922 1939 - Oct Sun>=2 2:00s 0 AMT
1272Rule Neth 1923 only - Jun 1 2:00s 1:00 NST
1273Rule Neth 1924 only - Mar 30 2:00s 1:00 NST
1274Rule Neth 1925 only - Jun 5 2:00s 1:00 NST
1275Rule Neth 1926 1931 - May 15 2:00s 1:00 NST
1276Rule Neth 1932 only - May 22 2:00s 1:00 NST
1277Rule Neth 1933 1936 - May 15 2:00s 1:00 NST
1278Rule Neth 1937 only - May 22 2:00s 1:00 NST
1279Rule Neth 1938 1939 - May 15 2:00s 1:00 NST
1280Rule Neth 1945 only - Apr 2 2:00s 1:00 -
1281Rule Neth 1945 only - May 20 2:00s 0 " DST"
1282# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1283Zone Europe/Amsterdam 0:19:36 - LMT 1892 May
1284 0:20 Neth %s 1937 Jul
1285 1:20 Neth %s 1940 May 16 2:00
1286 1:00 M-Eur MET%s 1945 Apr 2 2:00
1287 1:00 Neth MET%s 1977 Apr Sun>=1 2:00
1288 1:00 M-Eur MET%s
1289
1290# Norway
1291# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1292Rule Norway 1892 only - May 1 0:00 0 -
1293Rule Norway 1916 only - May 22 1:00 1:00 " DST"
1294Rule Norway 1916 only - Sep 30 0:00 0 -
1295Rule Norway 1945 only - Apr 2 2:00s 1:00 " DST"
1296Rule Norway 1945 only - Oct 1 2:00s 0 -
1297Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 " DST"
1298Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 -
1299Rule Norway 1965 only - Apr 25 2:00s 1:00 " DST"
1300# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1301Zone Europe/Oslo 0:43:00 - LMT 1895
1302 1:00 Norway MET%s 1940 Aug 10 23:00
1303 1:00 M-Eur MET%s 1945 Apr 2 2:00
1304 1:00 Norway MET%s 1980 Apr 6 2:00
1305 1:00 M-Eur MET%s
1306# Svalbard is like Europe/Oslo.
1307#
1308# Jan Mayen
1309# no information
1310
1311# Poland
1312# Austrian and German Poland switched from the Julian to the Gregorian calendar
1313# on 1582 Oct 15. Russian Poland switched on 1918 Jan 14.
1314# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1315Rule Poland 1918 1919 - Sep 16 2:00s 0 -
1316Rule Poland 1919 only - Apr 15 2:00s 1:00 " DST"
1317Rule Poland 1944 only - Oct 4 2:00 0 -
1318Rule Poland 1945 only - Apr 29 0:00 1:00 " DST"
1319Rule Poland 1945 only - Nov 1 0:00 0 -
1320Rule Poland 1946 only - Apr 14 0:00 1:00 " DST"
1321Rule Poland 1946 only - Sep 7 0:00 0 -
1322Rule Poland 1947 only - May 4 0:00 1:00 " DST"
1323Rule Poland 1947 1948 - Oct Sun>=1 0:00 0 -
1324Rule Poland 1948 only - Apr 18 0:00 1:00 " DST"
1325Rule Poland 1957 only - Jun 2 1:00s 1:00 " DST"
1326Rule Poland 1957 1958 - Sep lastSun 1:00s 0 -
1327Rule Poland 1958 only - Mar 30 1:00s 1:00 " DST"
1328Rule Poland 1959 only - May 31 1:00s 1:00 " DST"
1329Rule Poland 1959 1961 - Oct Sun>=1 1:00s 0 -
1330Rule Poland 1960 only - Apr 3 1:00s 1:00 " DST"
1331Rule Poland 1961 1964 - May Sun>=25 1:00s 1:00 " DST"
1332Rule Poland 1962 1964 - Sep lastSun 1:00s 0 -
1333# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1334Zone Europe/Warsaw 1:24:00 - LMT 1880
1335 1:24 - WMT 1915 Aug 5 # Warsaw Mean Time
1336 1:00 M-Eur MET%s 1918 Sep 16 3:00
1337 2:00 Poland EET%s 1922 Jun
1338 1:00 Poland MET%s 1940 Jun 23 2:00
1339 1:00 M-Eur MET%s 1944 Oct
1340 1:00 Poland MET%s 1977 Apr 3 1:00
1341 1:00 W-Eur MET%s
1342# This link is for backward compatibility with the old naming convention.
1343Link Europe/Warsaw Poland
1344
1345# Portugal
1346# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1347Rule Port 1911 only - May 24 0:00 0 -
1348Rule Port 1916 only - Jun 17 23:00 1:00 " DST"
1349Rule Port 1916 only - Nov 1 1:00 0 -
1350Rule Port 1917 only - Feb 28 23:00s 1:00 " DST"
1351Rule Port 1917 1921 - Oct 14 23:00s 0 -
1352Rule Port 1918 only - Mar 1 23:00s 1:00 " DST"
1353Rule Port 1919 only - Feb 28 23:00s 1:00 " DST"
1354Rule Port 1920 only - Feb 29 23:00s 1:00 " DST"
1355Rule Port 1921 only - Feb 28 23:00s 1:00 " DST"
1356Rule Port 1924 only - Apr 16 23:00s 1:00 " DST"
1357Rule Port 1924 only - Oct 14 23:00s 0 -
1358Rule Port 1926 only - Apr 17 23:00s 1:00 " DST"
1359Rule Port 1926 1929 - Oct Sat>=1 23:00s 0 -
1360Rule Port 1927 only - Apr 9 23:00s 1:00 " DST"
1361Rule Port 1928 only - Apr 14 23:00s 1:00 " DST"
1362Rule Port 1929 only - Apr 20 23:00s 1:00 " DST"
1363Rule Port 1931 only - Apr 18 23:00s 1:00 " DST"
1364Rule Port 1931 1932 - Oct Sat>=1 23:00s 0 -
1365Rule Port 1932 only - Apr 2 23:00s 1:00 " DST"
1366Rule Port 1934 only - Apr 4 23:00s 1:00 " DST"
1367Rule Port 1934 1938 - Oct Sat>=1 23:00s 0 -
1368Rule Port 1935 only - Apr 30 23:00s 1:00 " DST"
1369Rule Port 1936 only - Apr 18 23:00s 1:00 " DST"
1370Rule Port 1937 only - Apr 3 23:00s 1:00 " DST"
1371Rule Port 1938 only - Mar 26 23:00s 1:00 " DST"
1372Rule Port 1939 only - Apr 15 23:00s 1:00 " DST"
1373Rule Port 1939 only - Nov 18 23:00s 0 -
1374Rule Port 1940 only - Feb 24 23:00s 1:00 " DST"
1375Rule Port 1940 only - Oct 7 23:00s 0 -
1376Rule Port 1941 only - Apr 5 23:00s 1:00 " DST"
1377Rule Port 1941 only - Oct 5 23:00s 0 -
1378Rule Port 1942 1945 - Mar Sat>=8 23:00s 1:00 " DST"
1379Rule Port 1942 only - Apr 25 22:00s 2:00 " DDST"
1380Rule Port 1942 only - Aug 15 22:00s 1:00 " DST"
1381Rule Port 1942 1945 - Oct Sat>=24 23:00s 0 -
1382Rule Port 1943 only - Apr 17 22:00s 2:00 " DDST"
1383Rule Port 1943 1945 - Aug Sat>=25 22:00s 1:00 " DST"
1384Rule Port 1944 1945 - Apr Sat>=21 22:00s 2:00 " DDST"
1385Rule Port 1946 only - Apr Sat>=1 23:00s 1:00 " DST"
1386Rule Port 1946 only - Oct Sat>=1 23:00s 0 -
1387Rule Port 1947 1965 - Apr Sun>=1 2:00s 1:00 " DST"
1388Rule Port 1947 1965 - Oct Sun>=1 2:00s 0 -
1389Rule Port 1977 only - Mar 27 0:00s 1:00 " DST"
1390Rule Port 1977 only - Sep 25 0:00s 0 -
1391Rule Port 1978 1979 - Apr Sun>=1 0:00s 1:00 " DST"
1392Rule Port 1978 only - Oct 1 0:00s 0 -
1393Rule Port 1979 1982 - Sep lastSun 1:00s 0 -
1394Rule Port 1980 only - Mar lastSun 0:00s 1:00 " DST"
1395Rule Port 1981 1982 - Mar lastSun 1:00s 1:00 " DST"
1396Rule Port 1983 only - Mar lastSun 2:00s 1:00 " DST"
1397# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1398Zone Europe/Lisbon -0:36:32 - LMT 1884
1399 -0:37 - LMT 1911 May 24 # Lisbon Mean Time
1400 0:00 Port WET%s 1966 Apr 3 2:00
1401 1:00 - MET 1976 Sep 26 1:00
1402 0:00 Port WET%s 1983 Sep 25 1:00s
1403 0:00 W-Eur WET%s 1992 Sep 27 1:00s
1404# From Rui Pedro Salgueiro <rps@inescca.inescc.pt> (November 12, 1992):
1405# Portugal has recently (September, 27) changed timezone
1406# (from WET to MET or CET) to harmonize with EEC.
1407 1:00 M-Eur MET%s
1408# We don't know what happened to Madeira or the Azores,
1409# so we'll just use Shanks for now.
1410# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1411Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada
1412 -1:55 - HMT 1911 May 24 # Horta Mean Time
1413 -2:00 Port ACT%s 1966 Apr 3 2:00
1414 -1:00 - ACT 1977 Mar 27
1415 -1:00 - ACT 1983 Sep 25 1:00s
1416 -1:00 W-Eur ACT%s
1417Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal
1418 -1:08 - FMT 1911 May 24 # Funchal Mean Time
1419 -1:00 Port ACT%s 1966 Apr 3 2:00
1420 0:00 - WET 1977 Mar 27
1421 0:00 Port WET%s 1983 Sep 25 1:00s
1422 0:00 W-Eur WET%s
1423# This link is for backward compatibility with the old naming convention.
1424Link Europe/Lisbon Portugal
1425
1426# Slovakia
1427Link Europe/Prague Europe/Bratislava
1428
1429# Romania
1430# Catholic Romania switched from the Julian to the Gregorian calendar on
1431# on 1919 Mar 18. Greek Orthodox Romania switched on 1920 Mar 18.
1432# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1433Rule Romania 1931 only - Jul 24 0:00 0 -
1434Rule Romania 1932 only - May 22 0:00s 1:00 " DST"
1435Rule Romania 1932 1939 - Oct Sun>=1 0:00s 0 -
1436Rule Romania 1933 1939 - Apr Sun>=2 0:00s 1:00 " DST"
1437Rule Romania 1979 only - May 27 0:00 1:00 " DST"
1438Rule Romania 1979 only - Sep lastSun 0:00 0 -
1439Rule Romania 1980 only - Apr 5 23:00 1:00 " DST"
1440Rule Romania 1980 only - Sep lastSun 1:00 0 -
1441# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1442Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct
1443 1:44 - BMT 1931 Jul 24 # Bucharest MT
1444 2:00 Romania EET%s 1981 Mar 29 2:00s
1445 2:00 M-Eur EET%s
1446
1447# Russia
1448# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
1449# Moscow and Novosibirsk time zone names, and Moscow rules after 1991,
1450# are from Andrew A. Chernov <ache@astral.msk.su>.
1451# I invented the other time zone names.
1452# The rest is from Shanks; it's probably wrong after 1991.
1453# We're not sure whether St Petersburg switched in step with Moscow after 1991;
1454# it might be a useless name, so we'll comment it out for now.
1455#
1456# From Shanks (1991):
1457# Western Russia switched from the Julian to the Gregorian calendar
1458# on 1918 Jan 14. Eatern Russia switched on 1920 Mar 18.
1459# In 1929 the Soviet Union instituted a 5 day week; in 1932 it instituted
1460# a 6 day week; on 1940 Jun 27 it returned to the Gregorian week.
1461# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1462#Zone Europe/St_Petersburg 2:30:20 - LMT 1880
1463# 2:01 Russia LST%s 1919 Jul 1 2:00
1464# 3:00 Russia MS%s 1922 Oct
1465# 2:00 - EET 1930 Jun 21
1466# 3:00 Russia MS%s 1991 Sep 29 3:00
1467# 2:00 Russia SPS%s
1468Zone Europe/Moscow 2:30:20 - LMT 1880
1469 2:31 Russia LST%s 1919 Jul 1 2:00
1470 3:00 Russia MS%s 1922 Oct
1471 2:00 - EET 1930 Jun 21
1472 3:00 Russia MS%s 1991 Mar lastSun 2:00s
1473 2:00 1:00 "EET DST" 1991 Sep lastSun 2:00s
1474 2:00 - EET 1992 Jan 19 2:00s
1475 3:00 Russia MS%s
1476# This link is for backward compatibility with the old naming convention.
1477Link Europe/Moscow Moscow
1478Zone Asia/Sverdlovsk 4:02:34 - LMT 1924 May 2
1479 4:00 - SSK 1957 Mar
1480 5:00 Russia SS%s 1991 Sep 29 3:00
1481 4:00 Russia SS%s
1482Zone Asia/Omsk 4:53:36 - LMT 1924 May 2
1483 5:00 - TSK 1957 Mar
1484 6:00 Russia TS%s 1991 Sep 29 3:00
1485 5:00 Russia OS%s
1486Zone Asia/Novosibirsk 5:31:40 - LMT 1924 May 2
1487 6:00 - NSK 1957 Mar
1488 7:00 Russia NS%s 1991 Sep 29 3:00
1489 6:00 Russia NS%s
1490Zone Asia/Irkutsk 6:57:20 - LMT 1880
1491 6:57 - LST 1924 May 2
1492 7:00 - ISK 1957 Mar
1493 8:00 Russia IS%s 1991 Sep 29 3:00
1494 7:00 Russia IS%s
1495Zone Asia/Yakutsk 8:38:40 - LMT 1924 May 2
1496 8:00 - YSK 1957 Mar
1497 9:00 Russia YS%s 1991 Sep 29 3:00
1498 8:00 Russia YS%s
1499Zone Asia/Vladivostok 8:47:44 - LMT 1880
1500 8:48 - LST 1924 May 2
1501 9:00 - VSK 1957 Mar
1502 10:00 Russia VS%s 1991 Sep 29 3:00
1503 9:00 Russia VS%s
1504# MSK is taken; settle for GSK.
1505Zone Asia/Magadan 10:03:12 - LMT 1924 May 2
1506 10:00 - GSK 1957 Mar
1507 11:00 Russia GS%s 1991 Sep 29 3:00
1508 10:00 Russia GS%s
1509# This name should be Asia/Petropavlovsk-Kamchatski, but that's too long.
1510Zone Asia/Kamchatka 10:34:36 - LMT 1924 May 2
1511 11:00 - PSK 1957 Mar
1512 12:00 Russia PS%s 1991 Sep 29 3:00
1513 11:00 Russia PS%s
1514Zone Asia/Anadyr 11:49:56 - LMT 1924 May 2
1515 12:00 - ASK 1957 Mar
1516 13:00 Russia AS%s 1991 Sep 29 3:00
1517 12:00 Russia AS%s
1518
1519# Serbia
1520# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
1521# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1522Zone Europe/Belgrade 1:22:00 - LMT 1884
1523 1:00 - MET 1941 Apr 18 23:00
1524 1:00 M-Eur MET%s 1945 May 8 2:00s
1525 1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1526 1:00 - MET 1983 Mar 27 2:00s
1527 1:00 M-Eur MET%s
1528
1529# Slovenia
1530# They switched from the Julian to the Gregorian calendar on 1918 Mar 18.
1531# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1532Zone Europe/Ljubljana 0:58:04 - LMT 1884
1533 1:00 - MET 1941 Apr 18 23:00
1534 1:00 M-Eur MET%s 1945 May 8 2:00s
1535 1:00 1:00 "MET DST" 1945 Sep 16 2:00s
1536 1:00 - MET 1983 Mar 27 2:00s
1537 1:00 M-Eur MET%s
1538
1539# Spain
1540# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1541Rule Spain 1901 only - Jan 1 0:00 0 -
1542Rule Spain 1917 only - May 5 23:00s 1:00 " DST"
1543Rule Spain 1917 1919 - Oct 6 23:00s 0 -
1544Rule Spain 1918 only - Apr 15 23:00s 1:00 " DST"
1545Rule Spain 1919 only - Apr 5 23:00s 1:00 " DST"
1546Rule Spain 1924 only - Apr 16 23:00s 1:00 " DST"
1547Rule Spain 1924 only - Oct 4 23:00s 0 -
1548Rule Spain 1926 only - Apr 17 23:00s 1:00 " DST"
1549Rule Spain 1926 1929 - Oct Sat>=1 23:00s 0 -
1550Rule Spain 1927 only - Apr 9 23:00s 1:00 " DST"
1551Rule Spain 1928 only - Apr 14 23:00s 1:00 " DST"
1552Rule Spain 1929 only - Apr 20 23:00s 1:00 " DST"
1553Rule Spain 1937 only - May 22 23:00s 1:00 " DST"
1554Rule Spain 1937 1939 - Oct Sat>=1 23:00s 0 -
1555Rule Spain 1938 only - Mar 22 23:00s 1:00 " DST"
1556Rule Spain 1939 only - Apr 15 23:00s 1:00 " DST"
1557Rule Spain 1940 only - Mar 16 23:00s 1:00 " DST"
1558Rule Spain 1942 only - May 2 22:00s 2:00 " DDST"
1559Rule Spain 1942 only - Sep 1 22:00s 1:00 " DST"
1560Rule Spain 1943 1946 - Apr Sat>=13 22:00s 2:00 " DDST"
1561Rule Spain 1943 only - Oct 3 22:00s 1:00 " DST"
1562Rule Spain 1944 only - Oct 10 22:00s 1:00 " DST"
1563Rule Spain 1945 only - Sep 30 1:00 1:00 " DST"
1564Rule Spain 1949 only - Apr 30 23:00 1:00 " DST"
1565Rule Spain 1949 only - Sep 30 1:00 0 -
1566Rule Spain 1974 1975 - Apr Sat>=13 23:00 1:00 " DST"
1567Rule Spain 1974 1975 - Oct Sun>=1 1:00 0 -
1568Rule Spain 1976 only - Mar 27 23:00 1:00 " DST"
1569Rule Spain 1976 1977 - Sep lastSun 1:00 0 -
1570Rule Spain 1977 1978 - Apr 2 23:00 1:00 " DST"
1571Rule Spain 1978 only - Oct 1 1:00 0 -
1572# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1573Zone Europe/Madrid 0:14:44 - LMT 1901
1574 0:00 Spain WET%s 1946 Sep 30
1575 1:00 Spain MET%s 1979 Apr 1 2:00
1576 1:00 M-Eur MET%s
1577Zone Atlantic/Canary -1:01:36 - LMT 1922 Mar # Las Palmas de Gran C.
1578 -1:00 - ACT 1946 Sep 30 1:00
1579 0:00 - WET 1980 Apr 6 0:00s
1580 0:00 1:00 "WET DST" 1980 Sep 28 0:00s
1581 0:00 W-Eur WET%s
1582
1583# Sweden
1584# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1585Zone Europe/Stockholm 1:12:12 - LMT 1878 May 31
1586 1:12 - SMT 1900 Jan 1 1:00 # Stockholm MT
1587 1:00 - MET 1916 Apr 14 23:00s
1588 1:00 1:00 "MET DST" 1916 Sep 30 23:00s
1589 1:00 - MET 1980 Apr 6 2:00
1590 1:00 M-Eur MET%s
1591
1592# Switzerland
1593# From Howse (1988), p 82:
1594# By the end of the 18th century clocks and watches became commonplace
1595# and their performance improved enormously. Communities began to keep
1596# mean time in preference to apparent time -- Geneva from 1780 ....
1597# From Shanks (1991):
1598# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1599Rule Swiss 1894 only - Jun 1 0:00 0 -
1600Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 " DST"
1601Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0 " DST"
1602# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1603Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
1604 0:30 - SST 1894 Jun # Swiss Standard Time
1605 1:00 Swiss MET%s 1981 Mar 29 2:00
1606 1:00 M-Eur MET%s
1607
1608# Turkey
1609# European Turkey switched to the Gregorian calendar in 1908.
1610# Asian Turkey switched in 1914.
1611# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1612Rule Turkey 1910 only - Oct 1 0:00 0 -
1613Rule Turkey 1916 only - May 1 0:00 1:00 " DST"
1614Rule Turkey 1916 only - Oct 1 0:00 0 -
1615Rule Turkey 1920 only - Mar 28 0:00 1:00 " DST"
1616Rule Turkey 1920 only - Oct 25 0:00 0 -
1617Rule Turkey 1921 only - Apr 3 0:00 1:00 " DST"
1618Rule Turkey 1921 only - Oct 3 0:00 0 -
1619Rule Turkey 1922 only - Mar 26 0:00 1:00 " DST"
1620Rule Turkey 1922 only - Oct 8 0:00 0 -
1621Rule Turkey 1924 only - May 13 0:00 1:00 " DST"
1622Rule Turkey 1924 1925 - Oct 1 0:00 0 -
1623Rule Turkey 1925 only - May 1 0:00 1:00 " DST"
1624Rule Turkey 1940 only - Dec 1 0:00 1:00 " DST"
1625Rule Turkey 1941 only - Sep 21 0:00 0 -
1626Rule Turkey 1942 only - Apr 1 0:00 1:00 " DST"
1627Rule Turkey 1942 only - Nov 1 0:00 0 -
1628Rule Turkey 1945 only - Apr 2 0:00 1:00 " DST"
1629Rule Turkey 1945 only - Oct 8 0:00 0 -
1630Rule Turkey 1946 only - Jun 1 0:00 1:00 " DST"
1631Rule Turkey 1946 only - Oct 1 0:00 0 -
1632Rule Turkey 1947 1948 - Apr Sun>=16 0:00 1:00 " DST"
1633Rule Turkey 1947 1950 - Oct Sun>=2 0:00 0 -
1634Rule Turkey 1949 only - Apr 10 0:00 1:00 " DST"
1635Rule Turkey 1950 only - Apr 19 0:00 1:00 " DST"
1636Rule Turkey 1951 only - Apr 22 0:00 1:00 " DST"
1637Rule Turkey 1951 only - Oct 8 0:00 0 -
1638Rule Turkey 1962 only - Jul 15 0:00 1:00 " DST"
1639Rule Turkey 1962 only - Oct 8 0:00 0 -
1640Rule Turkey 1964 only - May 15 0:00 1:00 " DST"
1641Rule Turkey 1964 only - Oct 1 0:00 0 -
1642Rule Turkey 1970 1972 - May Sun>=2 0:00 1:00 " DST"
1643Rule Turkey 1970 1972 - Oct Sun>=2 0:00 0 -
1644Rule Turkey 1973 only - Jun 3 1:00 1:00 " DST"
1645Rule Turkey 1973 only - Nov 4 3:00 0 -
1646Rule Turkey 1974 only - Mar 31 2:00 1:00 " DST"
1647Rule Turkey 1974 only - Nov 3 5:00 0 -
1648Rule Turkey 1975 only - Mar 30 0:00 1:00 " DST"
1649Rule Turkey 1975 1976 - Oct lastSun 0:00 0 -
1650Rule Turkey 1976 only - Jun 1 0:00 1:00 " DST"
1651Rule Turkey 1977 1978 - Apr Sun>=1 0:00 1:00 " DST"
1652Rule Turkey 1977 only - Oct 16 0:00 0 -
1653Rule Turkey 1979 1980 - Apr Sun>=1 3:00 1:00 " DST"
1654Rule Turkey 1979 1982 - Oct Mon>=11 0:00 0 -
1655Rule Turkey 1981 1982 - Mar lastSun 3:00 1:00 " DST"
1656Rule Turkey 1983 only - Jul 31 0:00 1:00 " DST"
1657Rule Turkey 1983 only - Oct 2 0:00 0 -
1658Rule Turkey 1985 only - Apr 20 0:00 1:00 " DST"
1659Rule Turkey 1985 only - Sep 28 0:00 0 -
1660# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1661Zone Europe/Istanbul 1:55:52 - LMT 1880
1662 1:57 - OMT 1910 Oct # Ottoman Mean Time
1663 2:00 Turkey EET%s 1978 Oct 15
1664 3:00 Turkey TUR%s 1985 Apr 20
1665 2:00 Turkey EET%s 1986
1666 2:00 M-Eur EET%s
1667Link Europe/Istanbul Asia/Istanbul # Istanbul is in both continents.
1668# This link is for backward compatibility with the old naming convention.
1669Link Europe/Istanbul Turkey
1670
1671# Ukraine
1672# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1673Rule Ukraine 1919 only - Jul 1 2:00 1:00 " DST"
1674Rule Ukraine 1919 only - Aug 16 0:00 0 -
1675Rule Ukraine 1921 only - Feb 14 23:00 1:00 " DST"
1676Rule Ukraine 1921 only - Mar 21 23:00 2:00 " DDST"
1677Rule Ukraine 1921 only - Sep 1 0:00 1:00 " DST"
1678Rule Ukraine 1921 only - Oct 1 0:00 0 -
1679# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1680Zone Europe/Kiev 2:02:04 - LMT 1880
1681 2:02 Russia LST%s 1919 Jul 1 2:00
1682 2:02 Ukraine LST%s 1924 May 2
1683 2:00 - EET 1930 Jun 21
1684 3:00 Russia MS%s 1990 Jul 17
1685 2:00 M-Eur EET%s
1686
15637ed4
RG
1687###############################################################################
1688
1689# One source shows that Bulgaria, Cyprus, Finland, and Greece observe DST from
1690# the last Sunday in March to the last Sunday in September in 1986.
1691# The source shows Romania changing a day later than everybody else.
1692#
1693# According to Bernard Sieloff's source, Poland is in the MET time zone but
1694# uses the WE DST rules. The Western USSR uses EET+1 and ME DST rules.
1695# Bernard Sieloff's source claims Romania switches on the same day, but at
1696# 00:00 standard time (i.e., 01:00 DST). It also claims that Turkey
1697# switches on the same day, but switches on at 01:00 standard time
1698# and off at 00:00 standard time (i.e., 01:00 DST)
1699
1700# ...
1701# Date: Wed, 28 Jan 87 16:56:27 -0100
1702# From: seismo!mcvax!cgcha!wtho (Tom Hofmann)
1703# Message-Id: <8701281556.AA22174@cgcha.uucp>
1704# ...
1bd76676 1705#
15637ed4
RG
1706# ...the European time rules are...standardized since 1981, when
1707# most European coun[tr]ies started DST. Before that year, only
1708# a few countries (UK, France, Italy) had DST, each according
1709# to own national rules. In 1981, however, DST started on
1710# 'Apr firstSun', and not on 'Mar lastSun' as in the following
1711# years...
1bd76676
GW
1712# But also since 1981 there are some more national exceptions
1713# than listed in 'europe': Switzerland, for example, joined DST
1714# one year later, Denmark ended DST on 'Oct 1' instead of 'Sep
15637ed4 1715# lastSun' in 1981---I don't know how they handle now.
1bd76676 1716#
15637ed4 1717# Finally, DST ist always from 'Apr 1' to 'Oct 1' in the
1bd76676
GW
1718# Soviet Union (as far as I know).
1719#
15637ed4
RG
1720# Tom Hofmann, Scientific Computer Center, CIBA-GEIGY AG,
1721# 4002 Basle, Switzerland
1722# UUCP: ...!mcvax!cernvax!cgcha!wtho
1723
1724# ...
1725# Date: Wed, 4 Feb 87 22:35:22 +0100
1726# From: seismo!mcvax!cwi.nl!dik (Dik T. Winter)
1727# ...
1bd76676 1728#
15637ed4
RG
1729# The information from Tom Hofmann is (as far as I know) not entirely correct.
1730# After a request from chongo at amdahl I tried to retrieve all information
1731# about DST in Europe. I was able to find all from about 1969.
1bd76676 1732#
15637ed4
RG
1733# ...standardization on DST in Europe started in about 1977 with switches on
1734# first Sunday in April and last Sunday in September...
1735# In 1981 UK joined Europe insofar that
1736# the starting day for both shifted to last Sunday in March. And from 1982
1737# the whole of Europe used DST, with switch dates April 1 and October 1 in
1738# the Sov[i]et Union. In 1985 the SU reverted to standard Europe[a]n switch
1739# dates...
1bd76676 1740#
15637ed4
RG
1741# It should also be remembered that time-zones are not constants; e.g.
1742# Portugal switched in 1976 from MET (or CET) to WET with DST...
1743# Note also that though there were rules for switch dates not
1744# all countries abided to these dates, and many individual deviations
1745# occurred, though not since 1982 I believe. Another note: it is always
1746# assumed that DST is 1 hour ahead of normal time, this need not be the
1747# case; at least in the Netherlands there have been times when DST was 2 hours
1748# in advance of normal time.
1bd76676 1749#
15637ed4
RG
1750# ...
1751# dik t. winter, cwi, amsterdam, nederland
1752# INTERNET : dik@cwi.nl
1753# BITNET/EARN: dik@mcvax
1754
1755# From Bob Devine (January 28, 1988):
1756# ...
1757# Greece: Last Sunday in April to last Sunday in September (iffy on dates).
1758# Since 1978. Change at midnight.
1759# ...
1760# Monaco: has same DST as France.
1761# ...
1bd76676 1762
1bd76676
GW
1763# ...
1764# Date: Fri, 3 Sep 93 13:43:41 BST
1765# From: Peter Ilieve <peter@memex.co.uk>
1766# ...
1767# Turning to Europe, I now have a copy of the `Sixth Council Directive 92/20/EEC
1768# of 26 March 1992 on summertime arrangements'. This only covers 1993 and
1769# 1994, a seventh one is in the works but I doubt that the algorithm will
1770# change. This says summertime starts at 01:00 GMT on the last Sunday in March
1771# and ends at 01:00 GMT on the last Sunday in September, except for the UK
1772# and Eire where it ends at 01:00 GMT on the fourth Sunday in October.
1773# It says the arrangements for 1995 onwards will be decided by 1 January 1994,
1774# but as the sixth directive was supposed to appear by 1 Jan 92 and didn't
1775# arrive til March I wouldn't hold your breath.
ecdde2d7 1776#
1bd76676
GW
1777# The first summertime directive was adopted in 1980, although the UK didn't
1778# seem to use it until 1981. I suspect it would be safe to move your start
1779# dates for the -Eur rules back to 1981.