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 (2025-08-16): 7# To keep things manageable, list only locations occupied year-round; see 8# Antarctic Facilities Information 9# https://www.comnap.aq/antarctic-facilities-information 10# for information. 11# Unless otherwise specified, we have no time zone information. 12 13# FORMAT is '-00' and STDOFF is 0 for locations while uninhabited. 14 15# Argentina - year-round bases 16# Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05 17# Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01 18# Esperanza, Hope Bay, -6323-05659, since 1952-12-17 19# Marambio, -6414-05637, since 1969-10-29 20# Orcadas, Laurie I, -6016-04444, since 1904-02-22 21# San Martín, Barry I, -6808-06706, since 1951-03-21 22# (except 1960-03 / 1976-03-21) 23 24# Australia - territories 25# Heard Island, McDonald Islands (uninhabited) 26# previously sealers and scientific personnel wintered 27# Margaret Turner reports 28# https://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html 29# (1999-09-30) that they're UT +05, with no DST; 30# presumably this is when they have visitors. 31# 32# year-round bases 33# Casey, Bailey Peninsula, -6617+11032, since 1969 34# Davis, Vestfold Hills, -6835+07759, since 1957-01-13 35# (except 1964-11 - 1969-02) 36# Mawson, Holme Bay, -6736+06253, since 1954-02-13 37 38# From Steffen Thorsen (2009-03-11): 39# Three Australian stations in Antarctica have changed their time zone: 40# Casey moved from UTC+8 to UTC+11 41# Davis moved from UTC+7 to UTC+5 42# Mawson moved from UTC+6 to UTC+5 43# The changes occurred on 2009-10-18 at 02:00 (local times). 44# 45# Government source: (Australian Antarctic Division) 46# http://www.aad.gov.au/default.asp?casid=37079 47# 48# We have more background information here: 49# https://www.timeanddate.com/news/time/antarctica-new-times.html 50 51# From Steffen Thorsen (2010-03-10): 52# We got these changes from the Australian Antarctic Division: ... 53# 54# - Casey station reverted to its normal time of UTC+8 on 5 March 2010. 55# The change to UTC+11 is being considered as a regular summer thing but 56# has not been decided yet. 57# 58# - Davis station will revert to its normal time of UTC+7 at 10 March 2010 59# 20:00 UTC. 60# 61# - Mawson station stays on UTC+5. 62# 63# Background: 64# https://www.timeanddate.com/news/time/antartica-time-changes-2010.html 65 66# From Steffen Thorsen (2016-10-28): 67# Australian Antarctica Division informed us that Casey changed time 68# zone to UTC+11 in "the morning of 22nd October 2016". 69 70# From Steffen Thorsen (2020-10-02, as corrected): 71# Based on information we have received from the Australian Antarctic 72# Division, Casey station and Macquarie Island station will move to Tasmanian 73# daylight savings time on Sunday 4 October. This will take effect from 0001 74# hrs on Sunday 4 October 2020 and will mean Casey and Macquarie Island will 75# be on the same time zone as Hobart. Some past dates too for this 3 hour 76# time change back and forth between UTC+8 and UTC+11 for Casey: 77# - 2018 Oct 7 4:00 - 2019 Mar 17 3:00 - 2019 Oct 4 3:00 - 2020 Mar 8 3:00 78# and now - 2020 Oct 4 0:01 79 80# From Paul Eggert (2023-12-20): 81# Transitions from 2021 on are taken from: 82# https://www.timeanddate.com/time/zone/antarctica/casey 83# retrieved at various dates. 84 85# Zone NAME STDOFF RULES FORMAT [UNTIL] 86Zone Antarctica/Casey 0 - -00 1969 87 8:00 - %z 2009 Oct 18 2:00 88 11:00 - %z 2010 Mar 5 2:00 89 8:00 - %z 2011 Oct 28 2:00 90 11:00 - %z 2012 Feb 21 17:00u 91 8:00 - %z 2016 Oct 22 92 11:00 - %z 2018 Mar 11 4:00 93 8:00 - %z 2018 Oct 7 4:00 94 11:00 - %z 2019 Mar 17 3:00 95 8:00 - %z 2019 Oct 4 3:00 96 11:00 - %z 2020 Mar 8 3:00 97 8:00 - %z 2020 Oct 4 0:01 98 11:00 - %z 2021 Mar 14 0:00 99 8:00 - %z 2021 Oct 3 0:01 100 11:00 - %z 2022 Mar 13 0:00 101 8:00 - %z 2022 Oct 2 0:01 102 11:00 - %z 2023 Mar 9 3:00 103 8:00 - %z 104Zone Antarctica/Davis 0 - -00 1957 Jan 13 105 7:00 - %z 1964 Nov 106 0 - -00 1969 Feb 107 7:00 - %z 2009 Oct 18 2:00 108 5:00 - %z 2010 Mar 10 20:00u 109 7:00 - %z 2011 Oct 28 2:00 110 5:00 - %z 2012 Feb 21 20:00u 111 7:00 - %z 112Zone Antarctica/Mawson 0 - -00 1954 Feb 13 113 6:00 - %z 2009 Oct 18 2:00 114 5:00 - %z 115# References: 116# Casey Weather (1998-02-26) 117# http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html 118# Davis Station, Antarctica (1998-02-26) 119# http://www.antdiv.gov.au/aad/exop/sfo/davis/video.html 120# Mawson Station, Antarctica (1998-02-25) 121# http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html 122 123# Belgium - year-round base 124# Princess Elisabeth, Queen Maud Land, -713412+0231200, since 2007 125 126# Brazil - year-round base 127# Ferraz, King George Island, -6205+05824, since 1983/4 128 129# Bulgaria - year-round base 130# St. Kliment Ohridski, Livingston Island, -623829-0602153, since 1988 131 132# Chile - year-round bases and towns 133# Escudero, South Shetland Is, -621157-0585735, since 1994 134# Frei Montalva, King George Island, -6214-05848, since 1969-03-07 135# O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02 136# Prat, -6230-05941 137# Villa Las Estrellas (a town), around the Frei base, since 1984-04-09 138# These locations employ Region of Magallanes time; use 139# TZ='America/Punta_Arenas'. 140 141# China - year-round bases 142# Great Wall, King George Island, -6213-05858, since 1985-02-20 143# Zhongshan, Larsemann Hills, Prydz Bay, -6922+07623, since 1989-02-26 144# Qinling, Inexpressible I, Terra Nova Bay, -7456+16343, since 2024-02-07 145 146# France - year-round bases (also see "France & Italy") 147# 148# From Antoine Leca (1997-01-20): 149# Time data entries are from Nicole Pailleau at the IFRTP 150# (French Institute for Polar Research and Technology). 151# She confirms that French Southern Territories and Terre Adélie bases 152# don't observe daylight saving time, even if Terre Adélie supplies came 153# from Tasmania. 154# 155# French Southern Territories with year-round inhabitants 156# 157# Alfred Faure, Possession Island, Crozet Islands, -462551+0515152, since 1964; 158# sealing & whaling stations operated variously 1802/1911+; 159# see Asia/Dubai. 160# 161# Martin-de-Viviès, Amsterdam Island, -374105+0773155, since 1950 162# Port-aux-Français, Kerguelen Islands, -492110+0701303, since 1951; 163# whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956 164# 165# St Paul Island - near Amsterdam, uninhabited 166# fishing stations operated variously 1819/1931 167# 168# Kerguelen - see Indian/Maldives. 169# 170# year-round base in the main continent 171# Dumont d'Urville - see Pacific/Port_Moresby. 172 173# France & Italy - year-round base 174# Concordia, -750600+1232000, since 2005 175# https://en.wikipedia.org/wiki/Concordia_Station 176# Can use Asia/Singapore, which it has agreed with since inception. 177 178# Germany - year-round base 179# Neumayer III, -704080-0081602, since 2009 180 181# India - year-round bases 182# Bharati, -692428+0761114, since 2012 183# Maitri, -704558+0114356, since 1989 184 185# Italy - year-round base (also see "France & Italy") 186# Zuchelli, Terra Nova Bay, -744140+1640647, since 1986 187 188# Japan - year-round bases 189# See Asia/Riyadh. 190 191# S Korea - year-round base 192# Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014 193# King Sejong, King George Island, -6213-05847, since 1988 194 195# New Zealand - claims 196# Balleny Islands (never inhabited) 197# Scott Island (never inhabited) 198# 199# year-round base 200# Scott Base, Ross Island, since 1957-01. 201# See Pacific/Auckland. 202 203# Norway - territories 204# Bouvet (never inhabited) 205# 206# claims 207# Peter I Island (never inhabited) 208# 209# year-round base 210# Troll, Queen Maud Land, -720041+0023206, since 2005-02-12 211# 212# From Paul-Inge Flakstad (2014-03-10): 213# I recently had a long dialog about this with the developer of timegenie.com. 214# In the absence of specific dates, he decided to choose some likely ones: 215# GMT +1 - From March 1 to the last Sunday in March 216# GMT +2 - From the last Sunday in March until the last Sunday in October 217# GMT +1 - From the last Sunday in October until November 7 218# GMT +0 - From November 7 until March 1 219# The dates for switching to and from UTC+0 will probably not be absolutely 220# correct, but they should be quite close to the actual dates. 221# 222# From Paul Eggert (2014-03-21): 223# The CET-switching Troll rules require zic from tz 2014b or later, so as 224# suggested by Bengt-Inge Larsson comment them out for now, and approximate 225# with only UTC and CEST. Uncomment them when 2014b is more prevalent. 226# 227# Rule NAME FROM TO - IN ON AT SAVE LETTER/S 228#Rule Troll 2005 max - Mar 1 1:00u 1:00 +01 229Rule Troll 2005 max - Mar lastSun 1:00u 2:00 +02 230#Rule Troll 2005 max - Oct lastSun 1:00u 1:00 +01 231#Rule Troll 2004 max - Nov 7 1:00u 0:00 +00 232# Remove the following line when uncommenting the above '#Rule' lines. 233Rule Troll 2004 max - Oct lastSun 1:00u 0:00 +00 234# Zone NAME STDOFF RULES FORMAT [UNTIL] 235Zone Antarctica/Troll 0 - -00 2005 Feb 12 236 0:00 Troll %s 237 238# Poland - year-round base 239# Arctowski, King George Island, -620945-0582745, since 1977 240 241# Romania - year-bound base 242# Law-Racoviță, Larsemann Hills, -692319+0762251, since 1986 243 244# Russia - year-round bases 245# Bellingshausen, King George Island, -621159-0585337, since 1968-02-22 246# Mirny, Davis coast, -6633+09301, since 1956-02 247# Molodezhnaya, Alasheyev Bay, -6740+04551, 248# year-round from 1962-02 to 1999-07-01 249# Novolazarevskaya, Queen Maud Land, -7046+01150, 250# year-round from 1960/61 to 1992 251 252# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11 253# From Craig Mundell (1994-12-15): 254# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP 255# Vostok, which is one of the Russian stations, is set on the same 256# time as Moscow, Russia. 257# 258# From Lee Hotz (2001-03-08): 259# I queried the folks at Columbia who spent the summer at Vostok and this is 260# what they had to say about time there: 261# "in the US Camp (East Camp) we have been on New Zealand (McMurdo) 262# time, which is 12 hours ahead of GMT. The Russian Station Vostok was 263# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead 264# of GMT). This is a time zone I think two hours east of Moscow. The 265# natural time zone is in between the two: 8 hours ahead of GMT." 266# 267# From Paul Eggert (2001-05-04): 268# This seems to be hopelessly confusing, so I asked Lee Hotz about it 269# in person. He said that some Antarctic locations set their local 270# time so that noon is the warmest part of the day, and that this 271# changes during the year and does not necessarily correspond to mean 272# solar noon. So the Vostok time might have been whatever the clocks 273# happened to be during their visit. So we still don't really know what time 274# it is at Vostok. 275# 276# From Zakhary V. Akulov (2023-12-17 22:00:48 +0700): 277# ... from December, 18, 2023 00:00 by my decision the local time of 278# the Antarctic research base Vostok will correspond to UTC+5. 279# (2023-12-19): We constantly interact with Progress base, with company who 280# builds new wintering station, with sledge convoys, with aviation - they all 281# use UTC+5. Besides, difference between Moscow time is just 2 hours now, not 4. 282# (2023-12-19, in response to the question "Has local time at Vostok 283# been UTC+6 ever since 1957, or has it changed before?"): No. At least 284# since my antarctic career start, 10 years ago, Vostok base has UTC+7. 285# (In response to a 2023-12-18 question "from 02:00 to 00:00 today"): This. 286# 287# From Paul Eggert (2023-12-18): 288# For lack of better info, guess Vostok was at +07 from founding through today, 289# except when closed. 290 291# Zone NAME STDOFF RULES FORMAT [UNTIL] 292Zone Antarctica/Vostok 0 - -00 1957 Dec 16 293 7:00 - %z 1994 Feb 294 0 - -00 1994 Nov 295 7:00 - %z 2023 Dec 18 2:00 296 5:00 - %z 297 298# S Africa - year-round bases 299# Marion Island, -4653+03752 300# SANAE IV, Vesleskarvet, Queen Maud Land, -714022-0025026, since 1997 301 302# Ukraine - year-round base 303# Vernadsky (formerly Faraday), Galindez Island, -651445-0641526, since 1954 304 305# United Kingdom 306# 307# British Antarctic Territories (BAT) claims 308# South Orkney Islands 309# scientific station from 1903 310# whaling station at Signy I 1920/1926 311# South Shetland Islands 312# 313# year-round bases 314# Bird Island, South Georgia, -5400-03803, since 1983 315# Deception Island, -6259-06034, whaling station 1912/1931, 316# scientific station 1943/1967, 317# previously sealers and a scientific expedition wintered by accident, 318# and a garrison was deployed briefly 319# Halley, Coates Land, -7535-02604, since 1956-01-06 320# Halley is on a moving ice shelf and is periodically relocated 321# so that it is never more than 10km from its nominal location. 322# Rothera, Adelaide Island, -6734-6808, since 1976-12-01 323# 324# From Paul Eggert (2002-10-22) 325# <http://webexhibits.org/daylightsaving/g.html> says Rothera is -03 all year. 326# 327# Zone NAME STDOFF RULES FORMAT [UNTIL] 328Zone Antarctica/Rothera 0 - -00 1976 Dec 1 329 -3:00 - %z 330 331# Uruguay - year round base 332# Artigas, King George Island, -621104-0585107 333 334# USA - year-round bases 335# 336# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968) 337# See 'southamerica' for Antarctica/Palmer, since it uses South American DST. 338# 339# McMurdo Station, Ross Island, since 1955-12 340# Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20 341# 342# From Chris Carrier (1996-06-27): 343# Siple, the first commander of the South Pole station, 344# stated that he would have liked to have kept GMT at the station, 345# but that he found it more convenient to keep GMT+12 346# as supplies for the station were coming from McMurdo Sound, 347# which was on GMT+12 because New Zealand was on GMT+12 all year 348# at that time (1957). (Source: Siple's book 90° South.) 349# 350# From Susan Smith 351# http://www.cybertours.com/whs/pole10.html 352# (1995-11-13 16:24:56 +1300, no longer available): 353# We use the same time as McMurdo does. 354# And they use the same time as Christchurch, NZ does.... 355# One last quirk about South Pole time. 356# All the electric clocks are usually wrong. 357# Something about the generators running at 60.1hertz or something 358# makes all of the clocks run fast. So every couple of days, 359# we have to go around and set them back 5 minutes or so. 360# Maybe if we let them run fast all of the time, we'd get to leave here sooner!! 361# 362# See Pacific/Auckland. 363