Historically distinct IANA time zone
Atlantic/Stanley
- Countries
- Falkland Islands
- GPS reference
- 51.70° S, 57.85° W
- Data source
- IANA southamerica
- Aliases
- None
- Rule groups
- Falk
Falkland IslandsGeographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 51.70° S, 57.85° W. Associated countries: FK.
The Wikipedia link provides additional context; it is not evidence for a historical claim. Transition data comes from the IANA source file.
Notes from the time database
The story behind the clock
These source notes describe a period or rule. They do not, by themselves, establish a causal claim for a particular clock change.
The Falkland Islands will not turn back clocks this winter, but stay on daylight saving time. One source: We have gotten this confirmed by a clerk of the legislative assembly: Normally the clocks revert to Local Mean Time (UTC/GMT -4 hours) on the third Sunday of April at 0200hrs and advance to Summer Time (UTC/GMT -3 hours) on the first Sunday of September at 0200hrs. IMPORTANT NOTE: During 2011, on a trial basis, the Falkland Islands will not revert to local mean time, but clocks will remain on Summer time (UTC/GMT - 3 hours) throughout the whole of 2011. Any long term change to local time following the trial period will be notified. A letter from Justin McPhee, Chief Executive, Cable & Wireless Falkland Islands (dated 2012-02-22) states... The current Atlantic/Stanley entry under South America expects the clocks to go back to standard Falklands Time (FKT) on the 15th April. The database entry states that in 2011 Stanley was staying on fixed summer time on a trial basis only. FIG need to contact IANA and/or the maintainers of the database to inform them we're adopting the same policy this year and suggest recommendations for future years. For now we will assume permanent -03 for the Falklands until advised differently (to apply for 2012 and beyond, after the 2011 experiment was apparently successful.)
Original IANA source file: southamerica.
A shared present
Same clock today, different past
These nearby zones follow the same current annual pattern, yet retain their own historical record.
- America/Argentina/UshuaiaArgentina · 775 km from the reference location · Same annual clock since 2011
- America/Argentina/Rio_GallegosArgentina · 783 km from the reference location · Same annual clock since 2011
- America/Punta_ArenasChile · 899 km from the reference location · Same annual clock since 2017
Argentina · 775 km from the reference location · Same annual clock since 2011
Chile · 899 km from the reference location · Same annual clock since 2017Civil-time record
Recorded changes over time
From 1890 to 2010 · 70 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.
- -03:51 · SMTStandard time applies
- -04:00 · -04Standard time applies
- -03:00 · -03Daylight saving time begins
- -04:00 · -04Standard time applies
- -03:00 · -03Daylight saving time begins
- -04:00 · -04Standard time applies
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1890-01-01 00:00 | -03:51 | SMT | Standard time |
| 1912-03-11 23:51 | -04:00 | -04 | Standard time |
| 1937-09-26 01:00 | -03:00 | -03 | Daylight saving time |
| 1938-03-19 23:00 | -04:00 | -04 | Standard time |
| 1938-09-25 01:00 | -03:00 | -03 | Daylight saving time |
| 1939-03-18 23:00 | -04:00 | -04 | Standard time |
| 1939-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1940-03-23 23:00 | -04:00 | -04 | Standard time |
| 1940-09-29 01:00 | -03:00 | -03 | Daylight saving time |
| 1941-03-22 23:00 | -04:00 | -04 | Standard time |
| 1941-09-28 01:00 | -03:00 | -03 | Daylight saving time |
| 1942-03-21 23:00 | -04:00 | -04 | Standard time |
| 1942-09-27 01:00 | -03:00 | -03 | Daylight saving time |
| 1942-12-31 23:00 | -04:00 | -04 | Standard time |
| 1983-05-01 01:00 | -03:00 | -03 | Standard time |
| 1983-09-25 01:00 | -02:00 | -02 | Daylight saving time |
| 1984-04-28 23:00 | -03:00 | -03 | Standard time |
| 1984-09-16 01:00 | -02:00 | -02 | Daylight saving time |
| 1985-04-27 23:00 | -03:00 | -03 | Standard time |
| 1985-09-15 00:00 | -03:00 | -03 | Daylight saving time |
| 1986-04-19 23:00 | -04:00 | -04 | Standard time |
| 1986-09-14 01:00 | -03:00 | -03 | Daylight saving time |
| 1987-04-18 23:00 | -04:00 | -04 | Standard time |
| 1987-09-13 01:00 | -03:00 | -03 | Daylight saving time |
| 1988-04-16 23:00 | -04:00 | -04 | Standard time |
| 1988-09-11 01:00 | -03:00 | -03 | Daylight saving time |
| 1989-04-15 23:00 | -04:00 | -04 | Standard time |
| 1989-09-10 01:00 | -03:00 | -03 | Daylight saving time |
| 1990-04-21 23:00 | -04:00 | -04 | Standard time |
| 1990-09-09 01:00 | -03:00 | -03 | Daylight saving time |
| 1991-04-20 23:00 | -04:00 | -04 | Standard time |
| 1991-09-15 01:00 | -03:00 | -03 | Daylight saving time |
| 1992-04-18 23:00 | -04:00 | -04 | Standard time |
| 1992-09-13 01:00 | -03:00 | -03 | Daylight saving time |
| 1993-04-17 23:00 | -04:00 | -04 | Standard time |
| 1993-09-12 01:00 | -03:00 | -03 | Daylight saving time |
| 1994-04-16 23:00 | -04:00 | -04 | Standard time |
| 1994-09-11 01:00 | -03:00 | -03 | Daylight saving time |
| 1995-04-15 23:00 | -04:00 | -04 | Standard time |
| 1995-09-10 01:00 | -03:00 | -03 | Daylight saving time |
| 1996-04-20 23:00 | -04:00 | -04 | Standard time |
| 1996-09-15 01:00 | -03:00 | -03 | Daylight saving time |
| 1997-04-19 23:00 | -04:00 | -04 | Standard time |
| 1997-09-14 01:00 | -03:00 | -03 | Daylight saving time |
| 1998-04-18 23:00 | -04:00 | -04 | Standard time |
| 1998-09-13 01:00 | -03:00 | -03 | Daylight saving time |
| 1999-04-17 23:00 | -04:00 | -04 | Standard time |
| 1999-09-12 01:00 | -03:00 | -03 | Daylight saving time |
| 2000-04-15 23:00 | -04:00 | -04 | Standard time |
| 2000-09-10 01:00 | -03:00 | -03 | Daylight saving time |
| 2001-04-15 01:00 | -04:00 | -04 | Standard time |
| 2001-09-02 03:00 | -03:00 | -03 | Daylight saving time |
| 2002-04-21 01:00 | -04:00 | -04 | Standard time |
| 2002-09-01 03:00 | -03:00 | -03 | Daylight saving time |
| 2003-04-20 01:00 | -04:00 | -04 | Standard time |
| 2003-09-07 03:00 | -03:00 | -03 | Daylight saving time |
| 2004-04-18 01:00 | -04:00 | -04 | Standard time |
| 2004-09-05 03:00 | -03:00 | -03 | Daylight saving time |
| 2005-04-17 01:00 | -04:00 | -04 | Standard time |
| 2005-09-04 03:00 | -03:00 | -03 | Daylight saving time |
| 2006-04-16 01:00 | -04:00 | -04 | Standard time |
| 2006-09-03 03:00 | -03:00 | -03 | Daylight saving time |
| 2007-04-15 01:00 | -04:00 | -04 | Standard time |
| 2007-09-02 03:00 | -03:00 | -03 | Daylight saving time |
| 2008-04-20 01:00 | -04:00 | -04 | Standard time |
| 2008-09-07 03:00 | -03:00 | -03 | Daylight saving time |
| 2009-04-19 01:00 | -04:00 | -04 | Standard time |
| 2009-09-06 03:00 | -03:00 | -03 | Daylight saving time |
| 2010-04-18 01:00 | -04:00 | -04 | Standard time |
| 2010-09-05 03:00 | -03:00 | -03 | Standard time |