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363 lines
14 KiB
Plaintext
# tzdb data for Antarctica and environs
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# This file is in the public domain, so clarified as of
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# 2009-05-17 by Arthur David Olson.
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# From Paul Eggert (1999-11-15):
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# To keep things manageable, we list only locations occupied year-round; see
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# COMNAP - Stations and Bases
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# http://www.comnap.aq/comnap/comnap.nsf/P/Stations/
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# and
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# Summary of the Peri-Antarctic Islands (1998-07-23)
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# http://www.spri.cam.ac.uk/bob/periant.htm
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# for information.
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# Unless otherwise specified, we have no time zone information.
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# FORMAT is '-00' and STDOFF is 0 for locations while uninhabited.
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# Argentina - year-round bases
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# Belgrano II, Confin Coast, -770227-0343737, since 1972-02-05
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# Carlini, Potter Cove, King George Island, -6414-0602320, since 1982-01
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# Esperanza, Hope Bay, -6323-05659, since 1952-12-17
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# Marambio, -6414-05637, since 1969-10-29
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# Orcadas, Laurie I, -6016-04444, since 1904-02-22
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# San Martín, Barry I, -6808-06706, since 1951-03-21
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# (except 1960-03 / 1976-03-21)
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# Australia - territories
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# Heard Island, McDonald Islands (uninhabited)
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# previously sealers and scientific personnel wintered
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# Margaret Turner reports
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# https://web.archive.org/web/20021204222245/http://www.dstc.qut.edu.au/DST/marg/daylight.html
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# (1999-09-30) that they're UT +05, with no DST;
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# presumably this is when they have visitors.
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#
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# year-round bases
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# Casey, Bailey Peninsula, -6617+11032, since 1969
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# Davis, Vestfold Hills, -6835+07759, since 1957-01-13
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# (except 1964-11 - 1969-02)
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# Mawson, Holme Bay, -6736+06253, since 1954-02-13
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# From Steffen Thorsen (2009-03-11):
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# Three Australian stations in Antarctica have changed their time zone:
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# Casey moved from UTC+8 to UTC+11
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# Davis moved from UTC+7 to UTC+5
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# Mawson moved from UTC+6 to UTC+5
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# The changes occurred on 2009-10-18 at 02:00 (local times).
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#
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# Government source: (Australian Antarctic Division)
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# http://www.aad.gov.au/default.asp?casid=37079
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#
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# We have more background information here:
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# https://www.timeanddate.com/news/time/antarctica-new-times.html
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# From Steffen Thorsen (2010-03-10):
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# We got these changes from the Australian Antarctic Division: ...
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#
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# - Casey station reverted to its normal time of UTC+8 on 5 March 2010.
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# The change to UTC+11 is being considered as a regular summer thing but
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# has not been decided yet.
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#
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# - Davis station will revert to its normal time of UTC+7 at 10 March 2010
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# 20:00 UTC.
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#
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# - Mawson station stays on UTC+5.
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#
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# Background:
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# https://www.timeanddate.com/news/time/antartica-time-changes-2010.html
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# From Steffen Thorsen (2016-10-28):
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# Australian Antarctica Division informed us that Casey changed time
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# zone to UTC+11 in "the morning of 22nd October 2016".
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# From Steffen Thorsen (2020-10-02, as corrected):
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# Based on information we have received from the Australian Antarctic
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# Division, Casey station and Macquarie Island station will move to Tasmanian
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# daylight savings time on Sunday 4 October. This will take effect from 0001
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# hrs on Sunday 4 October 2020 and will mean Casey and Macquarie Island will
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# be on the same time zone as Hobart. Some past dates too for this 3 hour
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# time change back and forth between UTC+8 and UTC+11 for Casey:
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# - 2018 Oct 7 4:00 - 2019 Mar 17 3:00 - 2019 Oct 4 3:00 - 2020 Mar 8 3:00
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# and now - 2020 Oct 4 0:01
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# From Paul Eggert (2023-12-20):
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# Transitions from 2021 on are taken from:
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# https://www.timeanddate.com/time/zone/antarctica/casey
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# retrieved at various dates.
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# Zone NAME STDOFF RULES FORMAT [UNTIL]
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Zone Antarctica/Casey 0 - -00 1969
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8:00 - %z 2009 Oct 18 2:00
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11:00 - %z 2010 Mar 5 2:00
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8:00 - %z 2011 Oct 28 2:00
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11:00 - %z 2012 Feb 21 17:00u
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8:00 - %z 2016 Oct 22
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11:00 - %z 2018 Mar 11 4:00
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8:00 - %z 2018 Oct 7 4:00
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11:00 - %z 2019 Mar 17 3:00
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8:00 - %z 2019 Oct 4 3:00
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11:00 - %z 2020 Mar 8 3:00
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8:00 - %z 2020 Oct 4 0:01
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11:00 - %z 2021 Mar 14 0:00
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8:00 - %z 2021 Oct 3 0:01
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11:00 - %z 2022 Mar 13 0:00
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8:00 - %z 2022 Oct 2 0:01
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11:00 - %z 2023 Mar 9 3:00
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8:00 - %z
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Zone Antarctica/Davis 0 - -00 1957 Jan 13
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7:00 - %z 1964 Nov
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0 - -00 1969 Feb
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7:00 - %z 2009 Oct 18 2:00
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5:00 - %z 2010 Mar 10 20:00u
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7:00 - %z 2011 Oct 28 2:00
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5:00 - %z 2012 Feb 21 20:00u
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7:00 - %z
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Zone Antarctica/Mawson 0 - -00 1954 Feb 13
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6:00 - %z 2009 Oct 18 2:00
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5:00 - %z
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# References:
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# Casey Weather (1998-02-26)
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# http://www.antdiv.gov.au/aad/exop/sfo/casey/casey_aws.html
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# Davis Station, Antarctica (1998-02-26)
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# http://www.antdiv.gov.au/aad/exop/sfo/davis/video.html
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# Mawson Station, Antarctica (1998-02-25)
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# http://www.antdiv.gov.au/aad/exop/sfo/mawson/video.html
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# Belgium - year-round base
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# Princess Elisabeth, Queen Maud Land, -713412+0231200, since 2007
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# Brazil - year-round base
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# Ferraz, King George Island, -6205+05824, since 1983/4
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# Bulgaria - year-round base
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# St. Kliment Ohridski, Livingston Island, -623829-0602153, since 1988
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# Chile - year-round bases and towns
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# Escudero, South Shetland Is, -621157-0585735, since 1994
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# Frei Montalva, King George Island, -6214-05848, since 1969-03-07
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# O'Higgins, Antarctic Peninsula, -6319-05704, since 1948-02
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# Prat, -6230-05941
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# Villa Las Estrellas (a town), around the Frei base, since 1984-04-09
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# These locations employ Region of Magallanes time; use
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# TZ='America/Punta_Arenas'.
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# China - year-round bases
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# Great Wall, King George Island, -6213-05858, since 1985-02-20
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# Zhongshan, Larsemann Hills, Prydz Bay, -6922+07623, since 1989-02-26
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# France - year-round bases (also see "France & Italy")
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#
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# From Antoine Leca (1997-01-20):
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# Time data entries are from Nicole Pailleau at the IFRTP
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# (French Institute for Polar Research and Technology).
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# She confirms that French Southern Territories and Terre Adélie bases
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# don't observe daylight saving time, even if Terre Adélie supplies came
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# from Tasmania.
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#
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# French Southern Territories with year-round inhabitants
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#
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# Alfred Faure, Possession Island, Crozet Islands, -462551+0515152, since 1964;
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# sealing & whaling stations operated variously 1802/1911+;
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# see Asia/Dubai.
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#
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# Martin-de-Viviès, Amsterdam Island, -374105+0773155, since 1950
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# Port-aux-Français, Kerguelen Islands, -492110+0701303, since 1951;
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# whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956
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#
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# St Paul Island - near Amsterdam, uninhabited
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# fishing stations operated variously 1819/1931
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#
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# Kerguelen - see Indian/Maldives.
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#
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# year-round base in the main continent
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# Dumont d'Urville - see Pacific/Port_Moresby.
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# France & Italy - year-round base
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# Concordia, -750600+1232000, since 2005
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# Germany - year-round base
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# Neumayer III, -704080-0081602, since 2009
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# India - year-round bases
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# Bharati, -692428+0761114, since 2012
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# Maitri, -704558+0114356, since 1989
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# Italy - year-round base (also see "France & Italy")
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# Zuchelli, Terra Nova Bay, -744140+1640647, since 1986
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# Japan - year-round bases
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# See Asia/Riyadh.
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# S Korea - year-round base
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# Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014
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# King Sejong, King George Island, -6213-05847, since 1988
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# New Zealand - claims
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# Balleny Islands (never inhabited)
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# Scott Island (never inhabited)
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#
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# year-round base
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# Scott Base, Ross Island, since 1957-01.
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# See Pacific/Auckland.
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# Norway - territories
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# Bouvet (never inhabited)
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#
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# claims
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# Peter I Island (never inhabited)
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#
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# year-round base
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# Troll, Queen Maud Land, -720041+0023206, since 2005-02-12
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#
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# From Paul-Inge Flakstad (2014-03-10):
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# I recently had a long dialog about this with the developer of timegenie.com.
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# In the absence of specific dates, he decided to choose some likely ones:
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# GMT +1 - From March 1 to the last Sunday in March
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# GMT +2 - From the last Sunday in March until the last Sunday in October
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# GMT +1 - From the last Sunday in October until November 7
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# GMT +0 - From November 7 until March 1
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# The dates for switching to and from UTC+0 will probably not be absolutely
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# correct, but they should be quite close to the actual dates.
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#
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# From Paul Eggert (2014-03-21):
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# The CET-switching Troll rules require zic from tz 2014b or later, so as
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# suggested by Bengt-Inge Larsson comment them out for now, and approximate
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# with only UTC and CEST. Uncomment them when 2014b is more prevalent.
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#
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# Rule NAME FROM TO - IN ON AT SAVE LETTER/S
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#Rule Troll 2005 max - Mar 1 1:00u 1:00 +01
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Rule Troll 2005 max - Mar lastSun 1:00u 2:00 +02
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#Rule Troll 2005 max - Oct lastSun 1:00u 1:00 +01
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#Rule Troll 2004 max - Nov 7 1:00u 0:00 +00
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# Remove the following line when uncommenting the above '#Rule' lines.
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Rule Troll 2004 max - Oct lastSun 1:00u 0:00 +00
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# Zone NAME STDOFF RULES FORMAT [UNTIL]
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Zone Antarctica/Troll 0 - -00 2005 Feb 12
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0:00 Troll %s
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# Poland - year-round base
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# Arctowski, King George Island, -620945-0582745, since 1977
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# Romania - year-bound base
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# Law-Racoviță, Larsemann Hills, -692319+0762251, since 1986
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# Russia - year-round bases
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# Bellingshausen, King George Island, -621159-0585337, since 1968-02-22
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# Mirny, Davis coast, -6633+09301, since 1956-02
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# Molodezhnaya, Alasheyev Bay, -6740+04551,
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# year-round from 1962-02 to 1999-07-01
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# Novolazarevskaya, Queen Maud Land, -7046+01150,
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# year-round from 1960/61 to 1992
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# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11
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# From Craig Mundell (1994-12-15):
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# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP
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# Vostok, which is one of the Russian stations, is set on the same
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# time as Moscow, Russia.
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#
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# From Lee Hotz (2001-03-08):
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# I queried the folks at Columbia who spent the summer at Vostok and this is
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# what they had to say about time there:
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# "in the US Camp (East Camp) we have been on New Zealand (McMurdo)
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# time, which is 12 hours ahead of GMT. The Russian Station Vostok was
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# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead
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# of GMT). This is a time zone I think two hours east of Moscow. The
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# natural time zone is in between the two: 8 hours ahead of GMT."
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#
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# From Paul Eggert (2001-05-04):
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# This seems to be hopelessly confusing, so I asked Lee Hotz about it
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# in person. He said that some Antarctic locations set their local
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# time so that noon is the warmest part of the day, and that this
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# changes during the year and does not necessarily correspond to mean
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# solar noon. So the Vostok time might have been whatever the clocks
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# happened to be during their visit. So we still don't really know what time
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# it is at Vostok.
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#
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# From Zakhary V. Akulov (2023-12-17 22:00:48 +0700):
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# ... from December, 18, 2023 00:00 by my decision the local time of
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# the Antarctic research base Vostok will correspond to UTC+5.
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# (2023-12-19): We constantly interact with Progress base, with company who
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# builds new wintering station, with sledge convoys, with aviation - they all
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# use UTC+5. Besides, difference between Moscow time is just 2 hours now, not 4.
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# (2023-12-19, in response to the question "Has local time at Vostok
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# been UTC+6 ever since 1957, or has it changed before?"): No. At least
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# since my antarctic career start, 10 years ago, Vostok base has UTC+7.
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# (In response to a 2023-12-18 question "from 02:00 to 00:00 today"): This.
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#
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# From Paul Eggert (2023-12-18):
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# For lack of better info, guess Vostok was at +07 from founding through today,
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# except when closed.
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# Zone NAME STDOFF RULES FORMAT [UNTIL]
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Zone Antarctica/Vostok 0 - -00 1957 Dec 16
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7:00 - %z 1994 Feb
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0 - -00 1994 Nov
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7:00 - %z 2023 Dec 18 2:00
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5:00 - %z
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# S Africa - year-round bases
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# Marion Island, -4653+03752
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# SANAE IV, Vesleskarvet, Queen Maud Land, -714022-0025026, since 1997
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# Ukraine - year-round base
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# Vernadsky (formerly Faraday), Galindez Island, -651445-0641526, since 1954
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# United Kingdom
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#
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# British Antarctic Territories (BAT) claims
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# South Orkney Islands
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# scientific station from 1903
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# whaling station at Signy I 1920/1926
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# South Shetland Islands
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#
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# year-round bases
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# Bird Island, South Georgia, -5400-03803, since 1983
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# Deception Island, -6259-06034, whaling station 1912/1931,
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# scientific station 1943/1967,
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# previously sealers and a scientific expedition wintered by accident,
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# and a garrison was deployed briefly
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# Halley, Coates Land, -7535-02604, since 1956-01-06
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# Halley is on a moving ice shelf and is periodically relocated
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# so that it is never more than 10km from its nominal location.
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# Rothera, Adelaide Island, -6734-6808, since 1976-12-01
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#
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# From Paul Eggert (2002-10-22)
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# <http://webexhibits.org/daylightsaving/g.html> says Rothera is -03 all year.
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#
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# Zone NAME STDOFF RULES FORMAT [UNTIL]
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Zone Antarctica/Rothera 0 - -00 1976 Dec 1
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-3:00 - %z
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# Uruguay - year round base
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# Artigas, King George Island, -621104-0585107
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# USA - year-round bases
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#
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# Palmer, Anvers Island, since 1965 (moved 2 miles in 1968)
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# See 'southamerica' for Antarctica/Palmer, since it uses South American DST.
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#
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# McMurdo Station, Ross Island, since 1955-12
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# Amundsen-Scott South Pole Station, continuously occupied since 1956-11-20
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#
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# From Chris Carrier (1996-06-27):
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# Siple, the first commander of the South Pole station,
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# stated that he would have liked to have kept GMT at the station,
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# but that he found it more convenient to keep GMT+12
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# as supplies for the station were coming from McMurdo Sound,
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# which was on GMT+12 because New Zealand was on GMT+12 all year
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# at that time (1957). (Source: Siple's book 90° South.)
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#
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# From Susan Smith
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# http://www.cybertours.com/whs/pole10.html
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# (1995-11-13 16:24:56 +1300, no longer available):
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# We use the same time as McMurdo does.
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# And they use the same time as Christchurch, NZ does....
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# One last quirk about South Pole time.
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# All the electric clocks are usually wrong.
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# Something about the generators running at 60.1hertz or something
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# makes all of the clocks run fast. So every couple of days,
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# we have to go around and set them back 5 minutes or so.
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# Maybe if we let them run fast all of the time, we'd get to leave here sooner!!
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#
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# See Pacific/Auckland.
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