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Time in Antarctica

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Map of approximate time zones on the continent of Antarctica. Stations could use time zones not matching the map.
UTC+00:00
UTC+03:00
UTC+06:00
UTC+07:00
UTC+08:00
UTC+10:00
UTC+12:00
UTC+13:00
UTC−06:00
UTC−03:00

Antarctica sits on every line of longitude because the South Pole is on the continent. Theoretically, Antarctica would be located in all time zones; however, areas south of the Antarctic Circle experience extreme day-night cycles near the times of the June and December solstices, making it difficult to determine which time zone would be appropriate. For practical purposes time zones are usually based on territorial claims; however, the time zone of their supply base (e.g., McMurdo Station and Amundsen–Scott South Pole Station use New Zealand time due to their main supply base being Christchurch, New Zealand).[1] In most areas south of 80 degrees latitude, Coordinated Universal Time is assumed despite the limited presence of clocks.

TZ database

The file zone.tab of the tz database contains the following zones, columns marked with * contain data from the file zone.tab. Only permanently inhabited stations are tracked by the tz database staff. Some summer only stations with different time might exist.

  Country code* Coordinates* Zone name* Comment* UTC offset Area covered
Standard time DST
AQ −6448−06406 Antarctica/Palmer Palmer −03:00 No Palmer Land
AQ −6734−06808 Antarctica/Rothera Rothera −03:00 No Graham Land
AQ −720041+0023206 Antarctica/Troll Troll +00:00[2] +02:00 Queen Maud Land
AQ −690022+0393524 Antarctica/Syowa Syowa +03:00 No Queen Maud Land, Enderby Land
AQ −6736+06253 Antarctica/Mawson Mawson +05:00 No Mac. Robertson Land
AQ −7824+10654 Antarctica/Vostok Vostok +05:00 No Inland Antarctica, Queen Maud Land
AQ −6835+07758 Antarctica/Davis Davis +07:00 No Wilkes Land
AQ −6617+11031 Antarctica/Casey Casey +08:00 +08:00[3] Wilkes Land
AQ −6640+14001 Antarctica/DumontDUrville Dumont-d'Urville +10:00 No Adélie Land, Victoria Land
AU −5430+15857 Antarctica/Macquarie Macquarie Island +10:00 +11:00 Macquarie Island
AQ −7750+16636 Antarctica/McMurdo New Zealand time - McMurdo, South Pole +12:00 +13:00 Ross Dependency
AQ Antarctica/South_Pole +12:00 +13:00 South Pole

The coordinates are latitude and longitude, and for each there are 2 or 3 digits for degrees, 2 digits for minutes and for some 2 digits for seconds.

Time in Antarctica is located in Antarctica
Palmer (-3)
Palmer (-3)
Rothera (-3)
Rothera (-3)
Vostok (+5)
Vostok (+5)
Syowa (+3)
Syowa (+3)
Mawson (+5)
Mawson (+5)
Davis (+7)
Davis (+7)
Casey (+8)
Casey (+8)
Dumont-d'Urville (+10)
Dumont-d'Urville (+10)
McMurdo (+12)
McMurdo (+12)
South Pole (+12)
South Pole (+12)
Troll (0)
Troll (0)
Locations of the reference bases (Not shown: Macquarie (+10) on Macquarie Island)

Daylight saving time

For the most part, daylight saving time (DST) is not observed in Antarctica. The majority (95 percent) of the continent is located south of the Antarctic Circle, and the midnight sun phenomenon renders the observation of DST unnecessary. Its usage would also further complicate communication with the claimant countries in the Northern Hemisphere.

However, a few regions such as the Ross Dependency and, formerly, Palmer Land, observe the time and use of DST of the countries they are supplied from, New Zealand and Chile, respectively.[1] The areas have DST during the southern summer, when there is the northern winter, including January.

References

  1. ^ a b "Local Time → Antarctica @ Time Genie". Timegenie.com. Retrieved 2013-07-24.
  2. ^ Forskingsstasjonen Troll (Norwegian Polar Institute) (The Norwegian text under the webcamera says "The time zone where Troll is located, UTC+0, is 1 hours behind Norwegian time". Contacts with the Norwegian Polar Institute has revealed that they use UTC+2 (Norwegian DST) during the dark winter, for communication simplicity, since no airplanes fly anyway then)
  3. ^ "Time Zone & Clock Changes in Casey, Antarctica".
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Time in Antarctica
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