Sep 29, 2024, 2:00 am
In some areas of Antarctica
| Country: | Antarctica |
|---|---|
| Abbreviations: | AQ, ATA |
| Time Zones: | 24+ |
Note: Only some parts of Antarctica used DST in 1991.
Mar 17
Back 1 hour
Mar 17, 1991 - Daylight Saving Time Ended
When local daylight time was about to reach
Sunday, March 17, 1991, 3:00:00 am clocks were turned backward 1 hour to
Sunday, March 17, 1991, 2:00:00 am local standard time instead.
Sunrise and sunset were about 1 hour earlier on Mar 17, 1991 than the day before. There was more light in the morning.
Also called Fall Back and Winter Time.
Oct 6
Forward 1 hour
Oct 6, 1991 - Daylight Saving Time Started
When local standard time was about to reach
Sunday, October 6, 1991, 2:00:00 am clocks were turned forward 1 hour to
Sunday, October 6, 1991, 3:00:00 am local daylight time instead.
Sunrise and sunset were about 1 hour later on Oct 6, 1991 than the day before. There was more light in the evening.
Also called Spring Forward, Summer Time, and Daylight Savings Time.
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 1991
Areas in Antarctica on standard time all of 1991
DST in Locations in Antarctica in 1991 (19 Locations) | |||||
|---|---|---|---|---|---|
| Belgrano II Base | Oct 20 – Mar 3 | Marambio Base | Oct 20 – Mar 3 | Rothera Research Station | Oct 20 – Mar 3 |
| Carlini Base | Oct 20 – Mar 3 | Mario Zucchelli Station | Oct 6 – Mar 17 | San Martín Base | Oct 20 – Mar 3 |
| Casey | No DST | Mawson | No DST | South Pole | Oct 6 – Mar 17 |
| Concordia Station | No DST | McMurdo | Oct 6 – Mar 17 | Troll Station | No DST |
| Davis | No DST | Neumayer-Station III | No DST | Vostok Station | No DST |
| Dumont d'Urville Station | No DST | Orcadas | Oct 20 – Mar 3 | ||
| Esperanza Base | Oct 20 – Mar 3 | Palmer Station | Oct 13 – Mar 10 | ||
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