Historically distinct IANA time zone
America/Thule
Local time now
ADT · current offset
- Countries
- Greenland
- GPS reference
- 76.57° N, 68.78° W
- Data source
- IANA europe
- Aliases
- None
- Rule groups
- Thule
GreenlandThule/Pituffik
Geographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 76.57° N, 68.78° W. Associated countries: GL.
The Wikipedia link provides additional context; it is not evidence for a historical claim. Transition data comes from the IANA source file.
A shared present
Same clock today, different past
These nearby zones follow the same current annual pattern, yet retain their own historical record.
Canada · 2607 km from the reference location · Same annual clock since 2012Civil-time record
Recorded changes over time
From 1916 to 2027 · 75 recorded transitions
Recurring daylight-saving changes are grouped separately when JavaScript is available.
Notable changes
One-off changes and transitions outside the recurring seasonal rhythm.
- -04:00 · ASTStandard time applies
- -03:00 · ADTDaylight saving time begins
- -04:00 · ASTStandard time applies
- -03:00 · ADTDaylight saving time begins
- -04:00 · ASTStandard time applies
- -03:00 · ADTDaylight saving time begins
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1916-07-28 00:35 | -04:00 | AST | Standard time |
| 1991-03-31 03:00 | -03:00 | ADT | Daylight saving time |
| 1991-09-29 01:00 | -04:00 | AST | Standard time |
| 1992-03-29 03:00 | -03:00 | ADT | Daylight saving time |
| 1992-09-27 01:00 | -04:00 | AST | Standard time |
| 1993-04-04 03:00 | -03:00 | ADT | Daylight saving time |
| 1993-10-31 01:00 | -04:00 | AST | Standard time |
| 1994-04-03 03:00 | -03:00 | ADT | Daylight saving time |
| 1994-10-30 01:00 | -04:00 | AST | Standard time |
| 1995-04-02 03:00 | -03:00 | ADT | Daylight saving time |
| 1995-10-29 01:00 | -04:00 | AST | Standard time |
| 1996-04-07 03:00 | -03:00 | ADT | Daylight saving time |
| 1996-10-27 01:00 | -04:00 | AST | Standard time |
| 1997-04-06 03:00 | -03:00 | ADT | Daylight saving time |
| 1997-10-26 01:00 | -04:00 | AST | Standard time |
| 1998-04-05 03:00 | -03:00 | ADT | Daylight saving time |
| 1998-10-25 01:00 | -04:00 | AST | Standard time |
| 1999-04-04 03:00 | -03:00 | ADT | Daylight saving time |
| 1999-10-31 01:00 | -04:00 | AST | Standard time |
| 2000-04-02 03:00 | -03:00 | ADT | Daylight saving time |
| 2000-10-29 01:00 | -04:00 | AST | Standard time |
| 2001-04-01 03:00 | -03:00 | ADT | Daylight saving time |
| 2001-10-28 01:00 | -04:00 | AST | Standard time |
| 2002-04-07 03:00 | -03:00 | ADT | Daylight saving time |
| 2002-10-27 01:00 | -04:00 | AST | Standard time |
| 2003-04-06 03:00 | -03:00 | ADT | Daylight saving time |
| 2003-10-26 01:00 | -04:00 | AST | Standard time |
| 2004-04-04 03:00 | -03:00 | ADT | Daylight saving time |
| 2004-10-31 01:00 | -04:00 | AST | Standard time |
| 2005-04-03 03:00 | -03:00 | ADT | Daylight saving time |
| 2005-10-30 01:00 | -04:00 | AST | Standard time |
| 2006-04-02 03:00 | -03:00 | ADT | Daylight saving time |
| 2006-10-29 01:00 | -04:00 | AST | Standard time |
| 2007-03-11 03:00 | -03:00 | ADT | Daylight saving time |
| 2007-11-04 01:00 | -04:00 | AST | Standard time |
| 2008-03-09 03:00 | -03:00 | ADT | Daylight saving time |
| 2008-11-02 01:00 | -04:00 | AST | Standard time |
| 2009-03-08 03:00 | -03:00 | ADT | Daylight saving time |
| 2009-11-01 01:00 | -04:00 | AST | Standard time |
| 2010-03-14 03:00 | -03:00 | ADT | Daylight saving time |
| 2010-11-07 01:00 | -04:00 | AST | Standard time |
| 2011-03-13 03:00 | -03:00 | ADT | Daylight saving time |
| 2011-11-06 01:00 | -04:00 | AST | Standard time |
| 2012-03-11 03:00 | -03:00 | ADT | Daylight saving time |
| 2012-11-04 01:00 | -04:00 | AST | Standard time |
| 2013-03-10 03:00 | -03:00 | ADT | Daylight saving time |
| 2013-11-03 01:00 | -04:00 | AST | Standard time |
| 2014-03-09 03:00 | -03:00 | ADT | Daylight saving time |
| 2014-11-02 01:00 | -04:00 | AST | Standard time |
| 2015-03-08 03:00 | -03:00 | ADT | Daylight saving time |
| 2015-11-01 01:00 | -04:00 | AST | Standard time |
| 2016-03-13 03:00 | -03:00 | ADT | Daylight saving time |
| 2016-11-06 01:00 | -04:00 | AST | Standard time |
| 2017-03-12 03:00 | -03:00 | ADT | Daylight saving time |
| 2017-11-05 01:00 | -04:00 | AST | Standard time |
| 2018-03-11 03:00 | -03:00 | ADT | Daylight saving time |
| 2018-11-04 01:00 | -04:00 | AST | Standard time |
| 2019-03-10 03:00 | -03:00 | ADT | Daylight saving time |
| 2019-11-03 01:00 | -04:00 | AST | Standard time |
| 2020-03-08 03:00 | -03:00 | ADT | Daylight saving time |
| 2020-11-01 01:00 | -04:00 | AST | Standard time |
| 2021-03-14 03:00 | -03:00 | ADT | Daylight saving time |
| 2021-11-07 01:00 | -04:00 | AST | Standard time |
| 2022-03-13 03:00 | -03:00 | ADT | Daylight saving time |
| 2022-11-06 01:00 | -04:00 | AST | Standard time |
| 2023-03-12 03:00 | -03:00 | ADT | Daylight saving time |
| 2023-11-05 01:00 | -04:00 | AST | Standard time |
| 2024-03-10 03:00 | -03:00 | ADT | Daylight saving time |
| 2024-11-03 01:00 | -04:00 | AST | Standard time |
| 2025-03-09 03:00 | -03:00 | ADT | Daylight saving time |
| 2025-11-02 01:00 | -04:00 | AST | Standard time |
| 2026-03-08 03:00 | -03:00 | ADT | Daylight saving time |
| 2026-11-01 01:00 | -04:00 | AST | Standard time |
| 2027-03-14 03:00 | -03:00 | ADT | Daylight saving time |
| 2027-11-07 01:00 | -04:00 | AST | Standard time |