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Time Change 1975 in Antarctica

Next change:
Apr
7
1 hour Back

Apr 7, 2024, 3:00 am

In small parts of Antarctica

Country: Antarctica
Abbreviations: AQ, ATA
Time Zones: 24+

Note: Only some parts of Antarctica used DST in 1975.

Feb 23

Back 1 hour

Feb 23, 1975 - Daylight Saving Time Ended

When local daylight time was about to reach
Sunday, February 23, 1975, 3:00:00 am clocks were turned backward 1 hour to
Sunday, February 23, 1975, 2:00:00 am local standard time instead.

Sunrise and sunset were about 1 hour earlier on Feb 23, 1975 than the day before. There was more light in the morning.

Also called Fall Back and Winter Time.

Oct 26

Forward 1 hour

Oct 26, 1975 - Daylight Saving Time Started

When local standard time was about to reach
Sunday, October 26, 1975, 2:00:00 am clocks were turned forward 1 hour to
Sunday, October 26, 1975, 3:00:00 am local daylight time instead.

Sunrise and sunset were about 1 hour later on Oct 26, 1975 than the day before. There was more light in the evening.

Also called Spring Forward, Summer Time, and Daylight Savings Time.

Other years: 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 2024

Is there Daylight Saving Time in Antarctica?

Although most research stations in Antarctica lie within the Antarctic Circle where Daylight Saving Time (DST) does not make sense as a measure to conserve energy, some of them change their clocks every year to stay in sync with the countries that operate or supply them. The date of the change may also vary, depending on supply boats or flights. For this reason, Daylight Saving Time changes in Antarctica are often labeled as preliminary.

Vostok Station, for example, doesn't use DST as it is in the Antarctic Circle and experiences 24 hours of sunlight during the summer and 24 hours of darkness in the winter.

McMurdo Station, however, follows New Zealand Standard Time (NZST) during standard time and New Zealand Daylight Time (NZDT) during the DST period in New Zealand.

The Norwegian research station Troll changes between Greenwich Mean Time (GMT) during standard time, and Central European Summer Time (CEST) during the DST-period.

Casey Station changes between UTC+8 in the winter season and UTC+11 in the summer season. The Australian station's time changes line up—for the most part—with the switch to DST in Australia. So, when Tasmania sets the clocks forward one hour for DST to UTC+11, Casey set their clocks forward three hours to UTC+11.

Which States use Daylight Saving Time in 1975

Areas in Antarctica using DST in 1975
Areas in Antarctica on standard time all of 1975

DST in Locations in Antarctica in 1975 (19 Locations)

Belgrano II BaseNo DSTMarambio BaseNo DSTRothera Research StationNo DST
Carlini BaseNo DSTMario Zucchelli StationOct 26 – Feb 23San Martín BaseNo DST
CaseyNo DSTMawsonNo DSTSouth PoleOct 26 – Feb 23
Concordia StationNo DSTMcMurdoOct 26 – Feb 23Troll StationNo DST
DavisNo DSTNeumayer-Station IIINo DSTVostok StationNo DST
Dumont d'Urville StationNo DSTOrcadasNo DST
Esperanza BaseNo DSTPalmer StationNo DST

Daylight Saving Time History in Antarctica

  • Antarctica first observed Daylight Saving Time in 1930.
  • Antarctica has observed DST for 91 years between 1930 and 2024 (DST in at least one location).
  • Previous time with no Daylight Saving Time was 1973.
  • See Worldwide DST Statistics