Clock change · IANA tzdata 2026e
Does Antarctica change its clocks?
No: Casey keeps the same time all year, UTC+8. IANA tzdata 2026e has no clock change scheduled.
Not every part of Antarctica follows the same schedule: see each time zone below.
No clock change
UTC+8 all year
Last changeThursday, 9 March 2023: the clocks went back 3 hours, from UTC+11 to UTC+8.
Now in CaseyUTC+8
Elsewhere in Antarctica: Troll change on Sunday, 25 October 2026.
7 time zones
Does all of Antarctica change at once?
Time zones that change on the same dates at the same local time are grouped together.
No clock change
Same time all year
Australian Western Standard TimeUTC+8
Last change: 9 March 2023
Davis TimeUTC+7
Last change: 22 February 2012
Mawson TimeUTC+5
Last change: 18 October 2009
UTC−3UTC−3
Last change: 14 August 2016
Rothera TimeUTC−3
Last change: 30 November 1976
Vostok TimeUTC+5
Last change: 18 December 2023
- −2 h
Next: Sunday, 25 October 2026 at 03:00 local time
UTC+2UTC+2
UTC+2 → UTC25 Oct
2026–2028
Every clock change in Troll
UTC+2: every change from 2026 to 2028.
| Date | Local time | Change | Time zone | UTC |
|---|---|---|---|---|
| Sunday, 29 March 2026 | 01:00 → 03:00 | +2 h | UTC → UTC+2 | 29 Mar 01:00 |
| Sunday, 25 October 2026Next | 03:00 → 01:00 | −2 h | UTC+2 → UTC | 25 Oct 01:00 |
| Sunday, 28 March 2027 | 01:00 → 03:00 | +2 h | UTC → UTC+2 | 28 Mar 01:00 |
| Sunday, 31 October 2027 | 03:00 → 01:00 | −2 h | UTC+2 → UTC | 31 Oct 01:00 |
| Sunday, 26 March 2028 | 01:00 → 03:00 | +2 h | UTC → UTC+2 | 26 Mar 01:00 |
| Sunday, 29 October 2028 | 03:00 → 01:00 | −2 h | UTC+2 → UTC | 29 Oct 01:00 |
2026–2028
Every clock change in Auckland
: every change from 2026 to 2028.
| Date | Local time | Change | Time zone | UTC |
|---|---|---|---|---|
| Sunday, 5 April 2026 | 03:00 → 02:00 | −1 h | NZDT → NZST | 4 Apr 14:00 |
| Sunday, 27 September 2026 | 02:00 → 03:00 | +1 h | NZST → NZDT | 26 Sept 14:00 |
| Sunday, 4 April 2027Next | 03:00 → 02:00 | −1 h | NZDT → NZST | 3 Apr 14:00 |
| Sunday, 26 September 2027 | 02:00 → 03:00 | +1 h | NZST → NZDT | 25 Sept 14:00 |
| Sunday, 2 April 2028 | 03:00 → 02:00 | −1 h | NZDT → NZST | 1 Apr 14:00 |
| Sunday, 24 September 2028 | 02:00 → 03:00 | +1 h | NZST → NZDT | 23 Sept 14:00 |
Local times are the clock times just before and just after each change. Computed from IANA tzdata 2026e; dates further ahead can still move if a government changes its rules.
History
When did Casey last change its clocks?
Thursday, 9 March 2023: the clocks went back 3 hours, from UTC+11 to UTC+8.
Questions
Clock changes in Antarctica: questions
When do the clocks change in Antarctica in 2026?
There is no clock change in Casey in 2026: UTC+8 all year.
Do the clocks go forward or back?
Neither: Casey keeps UTC+8 all year.
Will I get an hour more sleep?
No: the clocks do not change in Casey, so every night has its usual length.
Does Antarctica still use daylight saving time?
Partly. Troll; Auckland change their clocks; Casey keep the same time all year.
Does all of Antarctica change at the same time?
No. Troll; Auckland change their clocks; Casey keep the same time all year.