Antarctica/Troll time zone
1:44PMUTC+0
UTC+0UTC+0+5 h vs New York (you)
- Next transition: Sunday, March 28, 2027: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Next transition: Sunday, October 31, 2027: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Next transition: Sunday, March 26, 2028: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Next transition: Sunday, October 29, 2028: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Next transition: Sunday, March 25, 2029: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Next transition: Sunday, October 28, 2029: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Next transition: Sunday, March 31, 2030: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Next transition: Sunday, October 27, 2030: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Next transition: Sunday, March 30, 2031: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Next transition: Sunday, October 26, 2031: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Next transition: Sunday, March 28, 2032: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Next transition: Sunday, October 31, 2032: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
About Antarctica/Troll
Antarctica/Troll is the IANA time zone for Troll in Antarctica. It currently keeps UTC+0 in winter and UTC+2 in summer.
Its principal location is Troll at 72.01° S, 2.54° E.
Rule for future years (POSIX TZ string)
<+00>0<+02>-2,M3.5.0/1,M10.5.0/3
The standard time is called “+00” (a numeric abbreviation) and is UTC+0. POSIX writes the offset with the opposite sign (west of Greenwich is positive), which is why the string says "0". Daylight saving time is called “+02” (a numeric abbreviation) and is UTC+2. It starts on the last Sunday of March at 01:00 and ends on the last Sunday of October at 03:00, local time. Software that has no full tzdata copy, such as many embedded devices, can use this string directly as the TZ environment variable.
Upcoming transitions
- Sunday, March 28, 2027: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Sunday, October 31, 2027: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Sunday, March 26, 2028: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Sunday, October 29, 2028: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Sunday, March 25, 2029: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Sunday, October 28, 2029: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Sunday, March 31, 2030: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Sunday, October 27, 2030: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Sunday, March 30, 2031: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Sunday, October 26, 2031: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
- Sunday, March 28, 2032: at 1:00 AM clocks go forward 2 hours to 3:00 AM (UTC+2, UTC+2)
- Sunday, October 31, 2032: at 3:00 AM clocks go back 2 hours to 1:00 AM (UTC+0, UTC+0)
Computed from tzdata 2026f; local times are read on the clock just before each change.
History of Antarctica/Troll since 1970
| Years | Clocks | Abbreviations |
|---|---|---|
| 1970–2004 | UTC+0 all year | — |
| 2005 onward | UTC+2 in winter, UTC+0 in summer | — |
Changes of the winter (standard) offset: Sunday, March 27, 2005, UTC+0 → UTC+2.
tzdata commits to accuracy from 1970 for every zone (zone1970.tab); earlier entries are historical research and may be incomplete.
Convert Troll time
Using Antarctica/Troll in code
Every major platform reads the same IANA ID. Store instants in UTC and convert with the ID at display time; never store a fixed offset for a place that has daylight saving time.
// JavaScript
new Date().toLocaleString('en-US', { timeZone: 'Antarctica/Troll' })
# Python 3.9+
from zoneinfo import ZoneInfo
from datetime import datetime
datetime.now(ZoneInfo('Antarctica/Troll'))
// Java
java.time.ZonedDateTime.now(java.time.ZoneId.of("Antarctica/Troll"))
// Go
loc, _ := time.LoadLocation("Antarctica/Troll")
time.Now().In(loc)
-- PostgreSQL
SELECT now() AT TIME ZONE 'Antarctica/Troll';
# Shell
TZ='Antarctica/Troll' datePlatforms ship their own copy of tzdata and update it on their own schedule. After a rule change, outputs can differ until the platform updates; this page uses tzdata 2026f.