xref: /freebsd/contrib/tzdata/antarctica (revision 9f23cbd6cae82fd77edfad7173432fa8dccd0a95)
1# tzdb data for Antarctica and environs
2
3# This file is in the public domain, so clarified as of
4# 2009-05-17 by Arthur David Olson.
5
6# From Paul Eggert (1999-11-15):
7# To keep things manageable, we list only locations occupied year-round; see
8# COMNAP - Stations and Bases
9# http://www.comnap.aq/comnap/comnap.nsf/P/Stations/
10# and
11# Summary of the Peri-Antarctic Islands (1998-07-23)
12# http://www.spri.cam.ac.uk/bob/periant.htm
13# for information.
14# Unless otherwise specified, we have no time zone information.
15
16# FORMAT is '-00' and STDOFF is 0 for locations while uninhabited.
17
18# Argentina - year-round bases
19# Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05
20# Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01
21# Esperanza, Hope Bay, -6323-05659, since 1952-12-17
22# Marambio, -6414-05637, since 1969-10-29
23# Orcadas, Laurie I, -6016-04444, since 1904-02-22
24# San Martín, Barry I, -6808-06706, since 1951-03-21
25#	(except 1960-03 / 1976-03-21)
26
27# Australia - territories
28# Heard Island, McDonald Islands (uninhabited)
29#	previously sealers and scientific personnel wintered
30#	Margaret Turner reports
31#	https://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html
32#	(1999-09-30) that they're UT +05, with no DST;
33#	presumably this is when they have visitors.
34#
35# year-round bases
36# Casey, Bailey Peninsula, -6617+11032, since 1969
37# Davis, Vestfold Hills, -6835+07759, since 1957-01-13
38#	(except 1964-11 - 1969-02)
39# Mawson, Holme Bay, -6736+06253, since 1954-02-13
40
41# From Steffen Thorsen (2009-03-11):
42# Three Australian stations in Antarctica have changed their time zone:
43# Casey moved from UTC+8 to UTC+11
44# Davis moved from UTC+7 to UTC+5
45# Mawson moved from UTC+6 to UTC+5
46# The changes occurred on 2009-10-18 at 02:00 (local times).
47#
48# Government source: (Australian Antarctic Division)
49# http://www.aad.gov.au/default.asp?casid=37079
50#
51# We have more background information here:
52# https://www.timeanddate.com/news/time/antarctica-new-times.html
53
54# From Steffen Thorsen (2010-03-10):
55# We got these changes from the Australian Antarctic Division: ...
56#
57# - Casey station reverted to its normal time of UTC+8 on 5 March 2010.
58# The change to UTC+11 is being considered as a regular summer thing but
59# has not been decided yet.
60#
61# - Davis station will revert to its normal time of UTC+7 at 10 March 2010
62# 20:00 UTC.
63#
64# - Mawson station stays on UTC+5.
65#
66# Background:
67# https://www.timeanddate.com/news/time/antartica-time-changes-2010.html
68
69# From Steffen Thorsen (2016-10-28):
70# Australian Antarctica Division informed us that Casey changed time
71# zone to UTC+11 in "the morning of 22nd October 2016".
72
73# From Steffen Thorsen (2020-10-02, as corrected):
74# Based on information we have received from the Australian Antarctic
75# Division, Casey station and Macquarie Island station will move to Tasmanian
76# daylight savings time on Sunday 4 October. This will take effect from 0001
77# hrs on Sunday 4 October 2020 and will mean Casey and Macquarie Island will
78# be on the same time zone as Hobart.  Some past dates too for this 3 hour
79# time change back and forth between UTC+8 and UTC+11 for Casey:
80# - 2018 Oct  7 4:00 - 2019 Mar 17 3:00 - 2019 Oct  4 3:00 - 2020 Mar  8 3:00
81# and now - 2020 Oct  4 0:01
82
83# Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
84Zone Antarctica/Casey	 0	-	-00	1969
85			 8:00	-	+08	2009 Oct 18  2:00
86			11:00	-	+11	2010 Mar  5  2:00
87			 8:00	-	+08	2011 Oct 28  2:00
88			11:00	-	+11	2012 Feb 21 17:00u
89			 8:00	-	+08	2016 Oct 22
90			11:00	-	+11	2018 Mar 11  4:00
91			 8:00	-	+08	2018 Oct  7  4:00
92			11:00	-	+11	2019 Mar 17  3:00
93			 8:00	-	+08	2019 Oct  4  3:00
94			11:00	-	+11	2020 Mar  8  3:00
95			 8:00	-	+08	2020 Oct  4  0:01
96			11:00	-	+11
97Zone Antarctica/Davis	0	-	-00	1957 Jan 13
98			7:00	-	+07	1964 Nov
99			0	-	-00	1969 Feb
100			7:00	-	+07	2009 Oct 18  2:00
101			5:00	-	+05	2010 Mar 10 20:00u
102			7:00	-	+07	2011 Oct 28  2:00
103			5:00	-	+05	2012 Feb 21 20:00u
104			7:00	-	+07
105Zone Antarctica/Mawson	0	-	-00	1954 Feb 13
106			6:00	-	+06	2009 Oct 18  2:00
107			5:00	-	+05
108# References:
109# Casey Weather (1998-02-26)
110# http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html
111# Davis Station, Antarctica (1998-02-26)
112# http://www.antdiv.gov.au/aad/exop/sfo/davis/video.html
113# Mawson Station, Antarctica (1998-02-25)
114# http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html
115
116# Belgium - year-round base
117# Princess Elisabeth, Queen Maud Land, -713412+0231200, since 2007
118
119# Brazil - year-round base
120# Ferraz, King George Island, -6205+05824, since 1983/4
121
122# Bulgaria - year-round base
123# St. Kliment Ohridski, Livingston Island, -623829-0602153, since 1988
124
125# Chile - year-round bases and towns
126# Escudero, South Shetland Is, -621157-0585735, since 1994
127# Frei Montalva, King George Island, -6214-05848, since 1969-03-07
128# O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02
129# Prat, -6230-05941
130# Villa Las Estrellas (a town), around the Frei base, since 1984-04-09
131# These locations employ Region of Magallanes time; use
132# TZ='America/Punta_Arenas'.
133
134# China - year-round bases
135# Great Wall, King George Island, -6213-05858, since 1985-02-20
136# Zhongshan, Larsemann Hills, Prydz Bay, -6922+07623, since 1989-02-26
137
138# France - year-round bases (also see "France & Italy")
139#
140# From Antoine Leca (1997-01-20):
141# Time data entries are from Nicole Pailleau at the IFRTP
142# (French Institute for Polar Research and Technology).
143# She confirms that French Southern Territories and Terre Adélie bases
144# don't observe daylight saving time, even if Terre Adélie supplies came
145# from Tasmania.
146#
147# French Southern Territories with year-round inhabitants
148#
149# Alfred Faure, Possession Island, Crozet Islands, -462551+0515152, since 1964;
150#	sealing & whaling stations operated variously 1802/1911+;
151#	see Asia/Dubai.
152#
153# Martin-de-Viviès, Amsterdam Island, -374105+0773155, since 1950
154# Port-aux-Français, Kerguelen Islands, -492110+0701303, since 1951;
155#	whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956
156#
157# St Paul Island - near Amsterdam, uninhabited
158#	fishing stations operated variously 1819/1931
159#
160# Kerguelen - see Indian/Maldives.
161#
162# year-round base in the main continent
163# Dumont d'Urville - see Pacific/Port_Moresby.
164
165# France & Italy - year-round base
166# Concordia, -750600+1232000, since 2005
167
168# Germany - year-round base
169# Neumayer III, -704080-0081602, since 2009
170
171# India - year-round bases
172# Bharati, -692428+0761114, since 2012
173# Maitri, -704558+0114356, since 1989
174
175# Italy - year-round base (also see "France & Italy")
176# Zuchelli, Terra Nova Bay, -744140+1640647, since 1986
177
178# Japan - year-round bases
179# See Asia/Riyadh.
180
181# S Korea - year-round base
182# Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014
183# King Sejong, King George Island, -6213-05847, since 1988
184
185# New Zealand - claims
186# Balleny Islands (never inhabited)
187# Scott Island (never inhabited)
188#
189# year-round base
190# Scott Base, Ross Island, since 1957-01.
191# See Pacific/Auckland.
192
193# Norway - territories
194# Bouvet (never inhabited)
195#
196# claims
197# Peter I Island (never inhabited)
198#
199# year-round base
200# Troll, Queen Maud Land, -720041+0023206, since 2005-02-12
201#
202# From Paul-Inge Flakstad (2014-03-10):
203# I recently had a long dialog about this with the developer of timegenie.com.
204# In the absence of specific dates, he decided to choose some likely ones:
205#   GMT +1 - From March 1 to the last Sunday in March
206#   GMT +2 - From the last Sunday in March until the last Sunday in October
207#   GMT +1 - From the last Sunday in October until November 7
208#   GMT +0 - From November 7 until March 1
209# The dates for switching to and from UTC+0 will probably not be absolutely
210# correct, but they should be quite close to the actual dates.
211#
212# From Paul Eggert (2014-03-21):
213# The CET-switching Troll rules require zic from tz 2014b or later, so as
214# suggested by Bengt-Inge Larsson comment them out for now, and approximate
215# with only UTC and CEST.  Uncomment them when 2014b is more prevalent.
216#
217# Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
218#Rule	Troll	2005	max	-	Mar	 1	1:00u	1:00	+01
219Rule	Troll	2005	max	-	Mar	lastSun	1:00u	2:00	+02
220#Rule	Troll	2005	max	-	Oct	lastSun	1:00u	1:00	+01
221#Rule	Troll	2004	max	-	Nov	 7	1:00u	0:00	+00
222# Remove the following line when uncommenting the above '#Rule' lines.
223Rule	Troll	2004	max	-	Oct	lastSun	1:00u	0:00	+00
224# Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
225Zone Antarctica/Troll	0	-	-00	2005 Feb 12
226			0:00	Troll	%s
227
228# Poland - year-round base
229# Arctowski, King George Island, -620945-0582745, since 1977
230
231# Romania - year-bound base
232# Law-Racoviță, Larsemann Hills, -692319+0762251, since 1986
233
234# Russia - year-round bases
235# Bellingshausen, King George Island, -621159-0585337, since 1968-02-22
236# Mirny, Davis coast, -6633+09301, since 1956-02
237# Molodezhnaya, Alasheyev Bay, -6740+04551,
238#	year-round from 1962-02 to 1999-07-01
239# Novolazarevskaya, Queen Maud Land, -7046+01150,
240#	year-round from 1960/61 to 1992
241
242# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11
243# See Asia/Urumqi.
244
245# S Africa - year-round bases
246# Marion Island, -4653+03752
247# SANAE IV, Vesleskarvet, Queen Maud Land, -714022-0025026, since 1997
248
249# Ukraine - year-round base
250# Vernadsky (formerly Faraday), Galindez Island, -651445-0641526, since 1954
251
252# United Kingdom
253#
254# British Antarctic Territories (BAT) claims
255# South Orkney Islands
256#	scientific station from 1903
257#	whaling station at Signy I 1920/1926
258# South Shetland Islands
259#
260# year-round bases
261# Bird Island, South Georgia, -5400-03803, since 1983
262# Deception Island, -6259-06034, whaling station 1912/1931,
263#	scientific station 1943/1967,
264#	previously sealers and a scientific expedition wintered by accident,
265#	and a garrison was deployed briefly
266# Halley, Coates Land, -7535-02604, since 1956-01-06
267#	Halley is on a moving ice shelf and is periodically relocated
268#	so that it is never more than 10km from its nominal location.
269# Rothera, Adelaide Island, -6734-6808, since 1976-12-01
270#
271# From Paul Eggert (2002-10-22)
272# <http://webexhibits.org/daylightsaving/g.html> says Rothera is -03 all year.
273#
274# Zone	NAME		STDOFF	RULES	FORMAT	[UNTIL]
275Zone Antarctica/Rothera	0	-	-00	1976 Dec  1
276			-3:00	-	-03
277
278# Uruguay - year round base
279# Artigas, King George Island, -621104-0585107
280
281# USA - year-round bases
282#
283# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
284# See 'southamerica' for Antarctica/Palmer, since it uses South American DST.
285#
286# McMurdo Station, Ross Island, since 1955-12
287# Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20
288#
289# From Chris Carrier (1996-06-27):
290# Siple, the first commander of the South Pole station,
291# stated that he would have liked to have kept GMT at the station,
292# but that he found it more convenient to keep GMT+12
293# as supplies for the station were coming from McMurdo Sound,
294# which was on GMT+12 because New Zealand was on GMT+12 all year
295# at that time (1957).  (Source: Siple's book 90° South.)
296#
297# From Susan Smith
298# http://www.cybertours.com/whs/pole10.html
299# (1995-11-13 16:24:56 +1300, no longer available):
300# We use the same time as McMurdo does.
301# And they use the same time as Christchurch, NZ does....
302# One last quirk about South Pole time.
303# All the electric clocks are usually wrong.
304# Something about the generators running at 60.1hertz or something
305# makes all of the clocks run fast.  So every couple of days,
306# we have to go around and set them back 5 minutes or so.
307# Maybe if we let them run fast all of the time, we'd get to leave here sooner!!
308#
309# See Pacific/Auckland.
310