diff options
Diffstat (limited to 'contrib/tzdata/europe')
| -rw-r--r-- | contrib/tzdata/europe | 123 |
1 files changed, 99 insertions, 24 deletions
diff --git a/contrib/tzdata/europe b/contrib/tzdata/europe index 5b3b4e5..6c1ccbe 100644 --- a/contrib/tzdata/europe +++ b/contrib/tzdata/europe @@ -68,14 +68,15 @@ # 0:00 WET WEST WEMT Western Europe # 0:19:32.13 AMT* NST* Amsterdam, Netherlands Summer (1835-1937) # 1:00 BST British Standard (1968-1971) +# 1:00 IST GMT Irish Standard (1968-) with winter DST # 1:00 CET CEST CEMT Central Europe # 1:00:14 SET Swedish (1879-1899) # 1:36:34 RMT* LST* Riga, Latvian Summer (1880-1926)* # 2:00 EET EEST Eastern Europe # 3:00 MSK MSD MDST* Moscow -# From Peter Ilieve (1994-12-04), -# The original six [EU members]: Belgium, France, (West) Germany, Italy, +# From Peter Ilieve (1994-12-04), re EEC/EC/EU members: +# The original six: Belgium, France, (West) Germany, Italy, # Luxembourg, the Netherlands. # Plus, from 1 Jan 73: Denmark, Ireland, United Kingdom. # Plus, from 1 Jan 81: Greece. @@ -278,16 +279,31 @@ # The following claim by Shanks & Pottenger is possible though doubtful; # we'll ignore it for now. # * Dublin's 1971-10-31 switch was at 02:00, even though London's was 03:00. + +# From Paul Eggert (2017-12-04): # -# -# Whitman says Dublin Mean Time was -0:25:21, which is more precise than -# Shanks & Pottenger. -# Perhaps this was Dunsink Observatory Time, as Dunsink Observatory -# (8 km NW of Dublin's center) seemingly was to Dublin as Greenwich was -# to London. For example: +# Dunsink Observatory (8 km NW of Dublin's center) was to Dublin as +# Greenwich was to London. For example: # # "Timeball on the ballast office is down. Dunsink time." # -- James Joyce, Ulysses +# +# The abbreviation DMT stood for "Dublin Mean Time" or "Dunsink Mean Time"; +# this being Ireland, opinions differed. +# +# Whitman says Dublin/Dunsink Mean Time was UT-00:25:21, which agrees +# with measurements of recent visitors to the Meridian Room of Dunsink +# Observatory; see Malone D. Dunsink and timekeeping. 2016-01-24. +# <https://www.maths.tcd.ie/~dwmalone/time/dunsink.html>. Malone +# writes that the Nautical Almanac listed UT-00:25:22 until 1896, when +# it moved to UT-00:25:21.1 (I confirmed that the 1893 edition used +# the former and the 1896 edition used the latter). Evidently the +# news of this change propagated slowly, as Milne 1899 still lists +# UT-00:25:22 and cites the International Telegraph Bureau. As it is +# not clear that there was any practical significance to the change +# from UT-00:25:22 to UT-00:25:21.1 in civil timekeeping, omit this +# transition for now and just use the latter value, omitting its +# fraction since our format cannot represent fractions. # "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time # was among various actions undertaken by the 'English' government that @@ -347,12 +363,28 @@ # regulations. I spoke this morning with the Secretary of the Department of # Justice (tel +353 1 678 9711) who confirmed to me that the correct name is # "Irish Summer Time", abbreviated to "IST". +# +# From Paul Eggert (2017-12-07): +# The 1996 anonymous contributor's goal was to determine the correct +# abbreviation for summer time in Dublin and so the contributor +# focused on the "IST", not on the "Irish Summer Time". Though the +# "IST" was correct, the "Irish Summer Time" appears to have been an +# error, as Ireland's Standard Time (Amendment) Act, 1971 states that +# standard time in Ireland remains at UT +01 and is observed in +# summer, and that Greenwich mean time is observed in winter. (Thanks +# to Derick Rethans for pointing out the error.) That is, when +# Ireland amended the 1968 act that established UT +01 as Irish +# Standard Time, it left standard time unchanged and established GMT +# as a negative daylight saving time in winter. So, in this database +# IST stands for Irish Summer Time for timestamps before 1968, and for +# Irish Standard Time after that. See: +# http://www.irishstatutebook.ie/eli/1971/act/17/enacted/en/print # Michael Deckers (2017-06-01) gave the following URLs for Ireland's # Summer Time Act, 1925 and Summer Time Orders, 1926 and 1947: -# http://www.irishstatutebook.ie/eli/1925/act/8/enacted/en/print.html -# http://www.irishstatutebook.ie/eli/1926/sro/919/made/en/print.html -# http://www.irishstatutebook.ie/eli/1947/sro/71/made/en/print.html +# http://www.irishstatutebook.ie/eli/1925/act/8/enacted/en/print +# http://www.irishstatutebook.ie/eli/1926/sro/919/made/en/print +# http://www.irishstatutebook.ie/eli/1947/sro/71/made/en/print # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # Summer Time Act, 1916 @@ -476,9 +508,23 @@ Link Europe/London Europe/Jersey Link Europe/London Europe/Guernsey Link Europe/London Europe/Isle_of_Man +# From Paul Eggert (2018-01-19): +# The following is like GB-Eire and EU, except with standard time in +# summer and negative daylight saving time in winter. +# Although currently commented out, this will need to become uncommented +# once the ICU/OpenJDK workaround is removed; see below. +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +#Rule Eire 1971 only - Oct 31 2:00u -1:00 GMT +#Rule Eire 1972 1980 - Mar Sun>=16 2:00u 0 IST +#Rule Eire 1972 1980 - Oct Sun>=23 2:00u -1:00 GMT +#Rule Eire 1981 max - Mar lastSun 1:00u 0 IST +#Rule Eire 1981 1989 - Oct Sun>=23 1:00u -1:00 GMT +#Rule Eire 1990 1995 - Oct Sun>=22 1:00u -1:00 GMT +#Rule Eire 1996 max - Oct lastSun 1:00u -1:00 GMT + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 - -0:25:21 - DMT 1916 May 21 2:00s # Dublin MT + -0:25:21 - DMT 1916 May 21 2:00s -0:25:21 1:00 IST 1916 Oct 1 2:00s 0:00 GB-Eire %s 1921 Dec 6 # independence 0:00 GB-Eire GMT/IST 1940 Feb 25 2:00s @@ -487,16 +533,33 @@ Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 0:00 1:00 IST 1947 Nov 2 2:00s 0:00 - GMT 1948 Apr 18 2:00s 0:00 GB-Eire GMT/IST 1968 Oct 27 +# From Paul Eggert (2018-01-18): +# The next line should look like this: +# 1:00 Eire IST/GMT +# However, in January 2018 we discovered that the Eire rules cause +# problems with tests for ICU: +# https://mm.icann.org/pipermail/tz/2018-January/025825.html +# and with tests for OpenJDK: +# https://mm.icann.org/pipermail/tz/2018-January/025822.html +# To work around this problem, use a traditional approximation for +# time stamps after 1971-10-31 02:00 UTC, to give ICU and OpenJDK +# developers breathing room to fix bugs. This approximation has +# correct UTC offsets, but results in tm_isdst flags are the reverse +# of what they should be. This workaround is temporary and should be +# removed reasonably soon. 1:00 - IST 1971 Oct 31 2:00u 0:00 GB-Eire GMT/IST 1996 0:00 EU GMT/IST +# End of workaround for ICU and OpenJDK bugs. + ############################################################################### # Europe -# EU rules are for the European Union, previously known as the EC, EEC, -# Common Market, etc. +# The following rules are for the European Union and for its +# predecessor organization, the European Communities. +# For brevity they are called "EU rules" elsewhere in this file. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S @@ -929,7 +992,7 @@ Zone Europe/Prague 0:57:44 - LMT 1850 # The page http://www.retsinfo.dk/_GETDOCI_/ACCN/A18930008330-REGL # confirms this, and states that the law was put forth 1893-03-29. # -# The EU treaty with effect from 1973: +# The EU [actually, EEC and Euratom] treaty with effect from 1973: # http://www.retsinfo.dk/_GETDOCI_/ACCN/A19722110030-REGL # # This provoked a new law from 1974 to make possible summer time changes @@ -985,9 +1048,10 @@ Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn # East Greenland and Franz Josef Land, but we don't know their time zones. # My source for this is Wilhelm Dege's book mentioned under Svalbard. # -# From Paul Eggert (2006-03-22): -# Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01, -# and left the EU on 1985-02-01. It therefore should have been using EU +# From Paul Eggert (2017-12-10): +# Greenland joined the European Communities as part of Denmark, +# obtained home rule on 1979-05-01, and left the European Communities +# on 1985-02-01. It therefore should have been using EU # rules at least through 1984. Shanks & Pottenger say Scoresbysund and Godthåb # used C-Eur rules after 1980, but IATA SSIM (1991/1996) says they use EU # rules since at least 1991. Assume EU rules since 1980. @@ -1301,7 +1365,7 @@ Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01 # From Markus Kuhn (1998-09-29): # The German time zone web site by the Physikalisch-Technische # Bundesanstalt contains DST information back to 1916. -# [See tz-link.htm for the URL.] +# [See tz-link.html for the URL.] # From Jörg Schilling (2002-10-23): # In 1945, Berlin was switched to Moscow Summer time (GMT+4) by @@ -1398,7 +1462,7 @@ Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14 1:00 Greece CE%sT 1944 Apr 4 2:00 Greece EE%sT 1981 # Shanks & Pottenger say it switched to C-Eur in 1981; - # go with EU instead, since Greece joined it on Jan 1. + # go with EU rules instead, since Greece joined Jan 1. 2:00 EU EE%sT # Hungary @@ -2097,7 +2161,7 @@ Zone Europe/Warsaw 1:24:00 - LMT 1880 # IATA SSIM (1991/1992) reports that the Azores were at -1:00. # IATA SSIM (1993-02) says +0:00; later issues (through 1996-09) say -1:00. # Guess that the Azores changed to EU rules in 1992 (since that's when Portugal -# harmonized with the EU), and that they stayed +0:00 that winter. +# harmonized with EU rules), and that they stayed +0:00 that winter. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S # DSH writes that despite Decree 1,469 (1915), the change to the clocks was not @@ -2772,9 +2836,9 @@ Zone Asia/Omsk 4:53:30 - LMT 1919 Nov 14 # # https://regnum.ru/news/society/1957270.html # has some historical data for Altai Krai: -# before 1957: west part on UTC+6, east on UTC+7 -# after 1957: UTC+7 -# since 1995: UTC+6 +# before 1957: west part on UT+6, east on UT+7 +# after 1957: UT+7 +# since 1995: UT+6 # http://barnaul.rusplt.ru/index/pochemu_altajskij_kraj_okazalsja_v_neprivychnom_chasovom_pojase-17648.html # confirms that and provides more details including 1995-05-28 transition date. @@ -3582,6 +3646,17 @@ Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16 # See above comment. # The change is permanent, so this is the new standard time in Turkey. # It takes effect today, which is not much notice. +# From Kıvanç Yazan (2017-10-28): +# Turkey will go back to Daylight Saving Time starting 2018-10. +# http://www.resmigazete.gov.tr/eskiler/2017/10/20171028-5.pdf +# +# From Even Scharning (2017-11-08): +# ... today it was announced that the DST will become "continuous": +# http://www.hurriyet.com.tr/son-dakika-yaz-saati-uygulamasi-surekli-hale-geldi-40637482 +# From Paul Eggert (2017-11-08): +# Although Google Translate misfires on that source, it looks like +# Turkey reversed last month's decision, and so will stay at +03. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Turkey 1916 only - May 1 0:00 1:00 S Rule Turkey 1916 only - Oct 1 0:00 0 - |
