America/Anchorage

Time zone identifier: America/Anchorage

Current civil offset: -09:00 (AKST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1867-10-19

Local Mean Time (LMT): +14:00:24 based on geographic meridian

Total recorded transitions: 145 transitions across 5 distinct offsets

Associated countries: US

Aliases (Link targets): US/Alaska

Historical Offset Step Chart (1880 to Present)

Text summary: America/Anchorage shifted between 5 distinct offsets from 1867-10-19 through the modern era.

Complete Transition History (145 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1867-10-19T00:31:13Z`	`1867-10-18 14:31:37`	+14:00:24 → -09:59:36	`LMT`	No	overlap
`1900-08-20T21:59:36Z`	`1900-08-20 11:59:36`	-09:59:36 → -10:00	`AST`	No	overlap
`1942-02-09T12:00:00Z`	`1942-02-09 03:00:00`	-10:00 → -09:00	`AWT`	Yes	gap
`1945-08-14T23:00:00Z`	`1945-08-14 14:00:00`	-09:00 → -09:00	`APT`	Yes	offset-only
`1945-09-30T11:00:00Z`	`1945-09-30 01:00:00`	-09:00 → -10:00	`AST`	No	overlap
`1967-04-01T10:00:00Z`	`1967-04-01 00:00:00`	-10:00 → -10:00	`AHST`	No	offset-only
`1969-04-27T12:00:00Z`	`1969-04-27 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1969-10-26T11:00:00Z`	`1969-10-26 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1970-04-26T12:00:00Z`	`1970-04-26 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1970-10-25T11:00:00Z`	`1970-10-25 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1971-04-25T12:00:00Z`	`1971-04-25 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1971-10-31T11:00:00Z`	`1971-10-31 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1972-04-30T12:00:00Z`	`1972-04-30 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1972-10-29T11:00:00Z`	`1972-10-29 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1973-04-29T12:00:00Z`	`1973-04-29 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1973-10-28T11:00:00Z`	`1973-10-28 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1974-01-06T12:00:00Z`	`1974-01-06 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1974-10-27T11:00:00Z`	`1974-10-27 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1975-02-23T12:00:00Z`	`1975-02-23 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1975-10-26T11:00:00Z`	`1975-10-26 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1976-04-25T12:00:00Z`	`1976-04-25 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1976-10-31T11:00:00Z`	`1976-10-31 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1977-04-24T12:00:00Z`	`1977-04-24 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1977-10-30T11:00:00Z`	`1977-10-30 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1978-04-30T12:00:00Z`	`1978-04-30 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1978-10-29T11:00:00Z`	`1978-10-29 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1979-04-29T12:00:00Z`	`1979-04-29 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1979-10-28T11:00:00Z`	`1979-10-28 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1980-04-27T12:00:00Z`	`1980-04-27 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1980-10-26T11:00:00Z`	`1980-10-26 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1981-04-26T12:00:00Z`	`1981-04-26 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1981-10-25T11:00:00Z`	`1981-10-25 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1982-04-25T12:00:00Z`	`1982-04-25 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1982-10-31T11:00:00Z`	`1982-10-31 01:00:00`	-09:00 → -10:00	`AHST`	No	overlap
`1983-04-24T12:00:00Z`	`1983-04-24 03:00:00`	-10:00 → -09:00	`AHDT`	Yes	gap
`1983-10-30T11:00:00Z`	`1983-10-30 02:00:00`	-09:00 → -09:00	`YST`	No	offset-only
`1983-11-30T09:00:00Z`	`1983-11-30 00:00:00`	-09:00 → -09:00	`AKST`	No	offset-only
`1984-04-29T11:00:00Z`	`1984-04-29 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1984-10-28T10:00:00Z`	`1984-10-28 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1985-04-28T11:00:00Z`	`1985-04-28 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1985-10-27T10:00:00Z`	`1985-10-27 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1986-04-27T11:00:00Z`	`1986-04-27 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1986-10-26T10:00:00Z`	`1986-10-26 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1987-04-05T11:00:00Z`	`1987-04-05 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1987-10-25T10:00:00Z`	`1987-10-25 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1988-04-03T11:00:00Z`	`1988-04-03 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1988-10-30T10:00:00Z`	`1988-10-30 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1989-04-02T11:00:00Z`	`1989-04-02 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1989-10-29T10:00:00Z`	`1989-10-29 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1990-04-01T11:00:00Z`	`1990-04-01 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1990-10-28T10:00:00Z`	`1990-10-28 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1991-04-07T11:00:00Z`	`1991-04-07 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1991-10-27T10:00:00Z`	`1991-10-27 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1992-04-05T11:00:00Z`	`1992-04-05 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1992-10-25T10:00:00Z`	`1992-10-25 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1993-04-04T11:00:00Z`	`1993-04-04 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1993-10-31T10:00:00Z`	`1993-10-31 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1994-04-03T11:00:00Z`	`1994-04-03 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1994-10-30T10:00:00Z`	`1994-10-30 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1995-04-02T11:00:00Z`	`1995-04-02 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1995-10-29T10:00:00Z`	`1995-10-29 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1996-04-07T11:00:00Z`	`1996-04-07 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1996-10-27T10:00:00Z`	`1996-10-27 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1997-04-06T11:00:00Z`	`1997-04-06 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1997-10-26T10:00:00Z`	`1997-10-26 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1998-04-05T11:00:00Z`	`1998-04-05 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1998-10-25T10:00:00Z`	`1998-10-25 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`1999-04-04T11:00:00Z`	`1999-04-04 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`1999-10-31T10:00:00Z`	`1999-10-31 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2000-04-02T11:00:00Z`	`2000-04-02 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2000-10-29T10:00:00Z`	`2000-10-29 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2001-04-01T11:00:00Z`	`2001-04-01 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2001-10-28T10:00:00Z`	`2001-10-28 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2002-04-07T11:00:00Z`	`2002-04-07 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2002-10-27T10:00:00Z`	`2002-10-27 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2003-04-06T11:00:00Z`	`2003-04-06 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2003-10-26T10:00:00Z`	`2003-10-26 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2004-04-04T11:00:00Z`	`2004-04-04 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2004-10-31T10:00:00Z`	`2004-10-31 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2005-04-03T11:00:00Z`	`2005-04-03 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2005-10-30T10:00:00Z`	`2005-10-30 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2006-04-02T11:00:00Z`	`2006-04-02 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2006-10-29T10:00:00Z`	`2006-10-29 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2007-03-11T11:00:00Z`	`2007-03-11 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2007-11-04T10:00:00Z`	`2007-11-04 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2008-03-09T11:00:00Z`	`2008-03-09 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2008-11-02T10:00:00Z`	`2008-11-02 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2009-03-08T11:00:00Z`	`2009-03-08 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2009-11-01T10:00:00Z`	`2009-11-01 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2010-03-14T11:00:00Z`	`2010-03-14 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2010-11-07T10:00:00Z`	`2010-11-07 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2011-03-13T11:00:00Z`	`2011-03-13 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2011-11-06T10:00:00Z`	`2011-11-06 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2012-03-11T11:00:00Z`	`2012-03-11 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2012-11-04T10:00:00Z`	`2012-11-04 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2013-03-10T11:00:00Z`	`2013-03-10 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2013-11-03T10:00:00Z`	`2013-11-03 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2014-03-09T11:00:00Z`	`2014-03-09 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2014-11-02T10:00:00Z`	`2014-11-02 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2015-03-08T11:00:00Z`	`2015-03-08 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2015-11-01T10:00:00Z`	`2015-11-01 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2016-03-13T11:00:00Z`	`2016-03-13 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2016-11-06T10:00:00Z`	`2016-11-06 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2017-03-12T11:00:00Z`	`2017-03-12 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2017-11-05T10:00:00Z`	`2017-11-05 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2018-03-11T11:00:00Z`	`2018-03-11 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2018-11-04T10:00:00Z`	`2018-11-04 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2019-03-10T11:00:00Z`	`2019-03-10 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2019-11-03T10:00:00Z`	`2019-11-03 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2020-03-08T11:00:00Z`	`2020-03-08 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2020-11-01T10:00:00Z`	`2020-11-01 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2021-03-14T11:00:00Z`	`2021-03-14 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2021-11-07T10:00:00Z`	`2021-11-07 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2022-03-13T11:00:00Z`	`2022-03-13 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2022-11-06T10:00:00Z`	`2022-11-06 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2023-03-12T11:00:00Z`	`2023-03-12 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2023-11-05T10:00:00Z`	`2023-11-05 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2024-03-10T11:00:00Z`	`2024-03-10 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2024-11-03T10:00:00Z`	`2024-11-03 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2025-03-09T11:00:00Z`	`2025-03-09 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2025-11-02T10:00:00Z`	`2025-11-02 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2026-03-08T11:00:00Z`	`2026-03-08 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2026-11-01T10:00:00Z`	`2026-11-01 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2027-03-14T11:00:00Z`	`2027-03-14 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2027-11-07T10:00:00Z`	`2027-11-07 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2028-03-12T11:00:00Z`	`2028-03-12 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2028-11-05T10:00:00Z`	`2028-11-05 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2029-03-11T11:00:00Z`	`2029-03-11 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2029-11-04T10:00:00Z`	`2029-11-04 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2030-03-10T11:00:00Z`	`2030-03-10 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2030-11-03T10:00:00Z`	`2030-11-03 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2031-03-09T11:00:00Z`	`2031-03-09 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2031-11-02T10:00:00Z`	`2031-11-02 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2032-03-14T11:00:00Z`	`2032-03-14 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2032-11-07T10:00:00Z`	`2032-11-07 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2033-03-13T11:00:00Z`	`2033-03-13 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2033-11-06T10:00:00Z`	`2033-11-06 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2034-03-12T11:00:00Z`	`2034-03-12 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2034-11-05T10:00:00Z`	`2034-11-05 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2035-03-11T11:00:00Z`	`2035-03-11 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2035-11-04T10:00:00Z`	`2035-11-04 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2036-03-09T11:00:00Z`	`2036-03-09 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2036-11-02T10:00:00Z`	`2036-11-02 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap
`2037-03-08T11:00:00Z`	`2037-03-08 03:00:00`	-09:00 → -08:00	`AKDT`	Yes	gap
`2037-11-01T10:00:00Z`	`2037-11-01 01:00:00`	-08:00 → -09:00	`AKST`	No	overlap

Years on Record

Methodology Note: The 1970 Rule

tzdb guarantees accuracy for timestamps from 1970 onwards. Transitions prior to 1970 represent best-effort historical reconstructions.