Historically distinct IANA time zone
America/Metlakatla
- Countries
- United States of America
- GPS reference
- 55.13° N, 131.58° W
- Data source
- IANA northamerica
- Aliases
- None
- Rule groups
- US
United States of AmericaAlaska - Annette Island
Geographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 55.13° N, 131.58° W. Associated countries: US.
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.
War
Peace
Original IANA source file: northamerica.
A shared present
Same clock today, different past
These nearby zones follow the same current annual pattern, yet retain their own historical record.
- America/SitkaUnited States of America · 324 km from the reference location · Same annual clock since 2020
- America/JuneauUnited States of America · 393 km from the reference location · Same annual clock since 2020
- America/YakutatUnited States of America · 692 km from the reference location · Same annual clock since 2020
Civil-time record
Recorded changes over time
From 1867 to 2027 · 61 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.
- -08:46 · LMTStandard time applies
- -08:00 · PSTStandard time applies
- -07:00 · PWTDaylight saving time begins
- -07:00 · PPTDaylight saving time begins
- -08:00 · PSTStandard time applies
- -07:00 · PDTDaylight saving time begins
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1867-10-18 15:44 | -08:46 | LMT | Standard time |
| 1900-08-20 12:46 | -08:00 | PST | Standard time |
| 1942-02-09 03:00 | -07:00 | PWT | Daylight saving time |
| 1945-08-14 16:00 | -07:00 | PPT | Daylight saving time |
| 1945-09-30 01:00 | -08:00 | PST | Standard time |
| 1969-04-27 03:00 | -07:00 | PDT | Daylight saving time |
| 1969-10-26 01:00 | -08:00 | PST | Standard time |
| 1970-04-26 03:00 | -07:00 | PDT | Daylight saving time |
| 1970-10-25 01:00 | -08:00 | PST | Standard time |
| 1971-04-25 03:00 | -07:00 | PDT | Daylight saving time |
| 1971-10-31 01:00 | -08:00 | PST | Standard time |
| 1972-04-30 03:00 | -07:00 | PDT | Daylight saving time |
| 1972-10-29 01:00 | -08:00 | PST | Standard time |
| 1973-04-29 03:00 | -07:00 | PDT | Daylight saving time |
| 1973-10-28 01:00 | -08:00 | PST | Standard time |
| 1974-01-06 03:00 | -07:00 | PDT | Daylight saving time |
| 1974-10-27 01:00 | -08:00 | PST | Standard time |
| 1975-02-23 03:00 | -07:00 | PDT | Daylight saving time |
| 1975-10-26 01:00 | -08:00 | PST | Standard time |
| 1976-04-25 03:00 | -07:00 | PDT | Daylight saving time |
| 1976-10-31 01:00 | -08:00 | PST | Standard time |
| 1977-04-24 03:00 | -07:00 | PDT | Daylight saving time |
| 1977-10-30 01:00 | -08:00 | PST | Standard time |
| 1978-04-30 03:00 | -07:00 | PDT | Daylight saving time |
| 1978-10-29 01:00 | -08:00 | PST | Standard time |
| 1979-04-29 03:00 | -07:00 | PDT | Daylight saving time |
| 1979-10-28 01:00 | -08:00 | PST | Standard time |
| 1980-04-27 03:00 | -07:00 | PDT | Daylight saving time |
| 1980-10-26 01:00 | -08:00 | PST | Standard time |
| 1981-04-26 03:00 | -07:00 | PDT | Daylight saving time |
| 1981-10-25 01:00 | -08:00 | PST | Standard time |
| 1982-04-25 03:00 | -07:00 | PDT | Daylight saving time |
| 1982-10-31 01:00 | -08:00 | PST | Standard time |
| 1983-04-24 03:00 | -07:00 | PDT | Daylight saving time |
| 1983-10-30 01:00 | -08:00 | PST | Standard time |
| 2015-11-01 01:00 | -09:00 | AKST | Standard time |
| 2016-03-13 03:00 | -08:00 | AKDT | Daylight saving time |
| 2016-11-06 01:00 | -09:00 | AKST | Standard time |
| 2017-03-12 03:00 | -08:00 | AKDT | Daylight saving time |
| 2017-11-05 01:00 | -09:00 | AKST | Standard time |
| 2018-03-11 03:00 | -08:00 | AKDT | Daylight saving time |
| 2018-11-04 02:00 | -08:00 | PST | Standard time |
| 2019-01-20 01:00 | -09:00 | AKST | Standard time |
| 2019-03-10 03:00 | -08:00 | AKDT | Daylight saving time |
| 2019-11-03 01:00 | -09:00 | AKST | Standard time |
| 2020-03-08 03:00 | -08:00 | AKDT | Daylight saving time |
| 2020-11-01 01:00 | -09:00 | AKST | Standard time |
| 2021-03-14 03:00 | -08:00 | AKDT | Daylight saving time |
| 2021-11-07 01:00 | -09:00 | AKST | Standard time |
| 2022-03-13 03:00 | -08:00 | AKDT | Daylight saving time |
| 2022-11-06 01:00 | -09:00 | AKST | Standard time |
| 2023-03-12 03:00 | -08:00 | AKDT | Daylight saving time |
| 2023-11-05 01:00 | -09:00 | AKST | Standard time |
| 2024-03-10 03:00 | -08:00 | AKDT | Daylight saving time |
| 2024-11-03 01:00 | -09:00 | AKST | Standard time |
| 2025-03-09 03:00 | -08:00 | AKDT | Daylight saving time |
| 2025-11-02 01:00 | -09:00 | AKST | Standard time |
| 2026-03-08 03:00 | -08:00 | AKDT | Daylight saving time |
| 2026-11-01 01:00 | -09:00 | AKST | Standard time |
| 2027-03-14 03:00 | -08:00 | AKDT | Daylight saving time |
| 2027-11-07 01:00 | -09:00 | AKST | Standard time |