Canada/Yukon

Time zone identifier: Canada/Yukon

Current civil offset: -07:00 (MST)

Current DST state: Observing Standard Time

First standard time adoption: Adopted on 1900-08-20

Local Mean Time (LMT): -09:00:12 based on geographic meridian

Total recorded transitions: 93 transitions across 4 distinct offsets

Historical Offset Step Chart (1880 to Present)

Text summary: Canada/Yukon shifted between 4 distinct offsets from 1900-08-20 through the modern era.

Complete Transition History (93 Transitions)

UTC Instant	Local Wall Time	Shift	Abbreviation	DST	Effect
`1900-08-20T09:00:12Z`	`1900-08-20 00:00:12`	-09:00:12 → -09:00	`YST`	No	gap
`1918-04-14T11:00:00Z`	`1918-04-14 03:00:00`	-09:00 → -08:00	`YDT`	Yes	gap
`1918-10-27T10:00:00Z`	`1918-10-27 01:00:00`	-08:00 → -09:00	`YST`	No	overlap
`1919-05-25T11:00:00Z`	`1919-05-25 03:00:00`	-09:00 → -08:00	`YDT`	Yes	gap
`1919-11-01T08:00:00Z`	`1919-10-31 23:00:00`	-08:00 → -09:00	`YST`	No	overlap
`1942-02-09T11:00:00Z`	`1942-02-09 03:00:00`	-09:00 → -08:00	`YWT`	Yes	gap
`1945-08-14T23:00:00Z`	`1945-08-14 15:00:00`	-08:00 → -08:00	`YPT`	Yes	offset-only
`1945-09-30T10:00:00Z`	`1945-09-30 01:00:00`	-08:00 → -09:00	`YST`	No	overlap
`1965-04-25T09:00:00Z`	`1965-04-25 02:00:00`	-09:00 → -07:00	`YDDT`	Yes	gap
`1965-10-31T09:00:00Z`	`1965-10-31 00:00:00`	-07:00 → -09:00	`YST`	No	overlap
`1966-02-27T09:00:00Z`	`1966-02-27 01:00:00`	-09:00 → -08:00	`PST`	No	gap
`1980-04-27T10:00:00Z`	`1980-04-27 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1980-10-26T09:00:00Z`	`1980-10-26 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1981-04-26T10:00:00Z`	`1981-04-26 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1981-10-25T09:00:00Z`	`1981-10-25 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1982-04-25T10:00:00Z`	`1982-04-25 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1982-10-31T09:00:00Z`	`1982-10-31 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1983-04-24T10:00:00Z`	`1983-04-24 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1983-10-30T09:00:00Z`	`1983-10-30 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1984-04-29T10:00:00Z`	`1984-04-29 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1984-10-28T09:00:00Z`	`1984-10-28 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1985-04-28T10:00:00Z`	`1985-04-28 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1985-10-27T09:00:00Z`	`1985-10-27 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1986-04-27T10:00:00Z`	`1986-04-27 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1986-10-26T09:00:00Z`	`1986-10-26 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1987-04-05T10:00:00Z`	`1987-04-05 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1987-10-25T09:00:00Z`	`1987-10-25 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1988-04-03T10:00:00Z`	`1988-04-03 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1988-10-30T09:00:00Z`	`1988-10-30 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1989-04-02T10:00:00Z`	`1989-04-02 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1989-10-29T09:00:00Z`	`1989-10-29 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1990-04-01T10:00:00Z`	`1990-04-01 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1990-10-28T09:00:00Z`	`1990-10-28 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1991-04-07T10:00:00Z`	`1991-04-07 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1991-10-27T09:00:00Z`	`1991-10-27 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1992-04-05T10:00:00Z`	`1992-04-05 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1992-10-25T09:00:00Z`	`1992-10-25 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1993-04-04T10:00:00Z`	`1993-04-04 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1993-10-31T09:00:00Z`	`1993-10-31 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1994-04-03T10:00:00Z`	`1994-04-03 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1994-10-30T09:00:00Z`	`1994-10-30 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1995-04-02T10:00:00Z`	`1995-04-02 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1995-10-29T09:00:00Z`	`1995-10-29 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1996-04-07T10:00:00Z`	`1996-04-07 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1996-10-27T09:00:00Z`	`1996-10-27 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1997-04-06T10:00:00Z`	`1997-04-06 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1997-10-26T09:00:00Z`	`1997-10-26 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1998-04-05T10:00:00Z`	`1998-04-05 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1998-10-25T09:00:00Z`	`1998-10-25 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`1999-04-04T10:00:00Z`	`1999-04-04 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`1999-10-31T09:00:00Z`	`1999-10-31 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2000-04-02T10:00:00Z`	`2000-04-02 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2000-10-29T09:00:00Z`	`2000-10-29 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2001-04-01T10:00:00Z`	`2001-04-01 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2001-10-28T09:00:00Z`	`2001-10-28 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2002-04-07T10:00:00Z`	`2002-04-07 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2002-10-27T09:00:00Z`	`2002-10-27 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2003-04-06T10:00:00Z`	`2003-04-06 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2003-10-26T09:00:00Z`	`2003-10-26 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2004-04-04T10:00:00Z`	`2004-04-04 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2004-10-31T09:00:00Z`	`2004-10-31 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2005-04-03T10:00:00Z`	`2005-04-03 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2005-10-30T09:00:00Z`	`2005-10-30 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2006-04-02T10:00:00Z`	`2006-04-02 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2006-10-29T09:00:00Z`	`2006-10-29 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2007-03-11T10:00:00Z`	`2007-03-11 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2007-11-04T09:00:00Z`	`2007-11-04 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2008-03-09T10:00:00Z`	`2008-03-09 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2008-11-02T09:00:00Z`	`2008-11-02 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2009-03-08T10:00:00Z`	`2009-03-08 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2009-11-01T09:00:00Z`	`2009-11-01 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2010-03-14T10:00:00Z`	`2010-03-14 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2010-11-07T09:00:00Z`	`2010-11-07 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2011-03-13T10:00:00Z`	`2011-03-13 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2011-11-06T09:00:00Z`	`2011-11-06 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2012-03-11T10:00:00Z`	`2012-03-11 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2012-11-04T09:00:00Z`	`2012-11-04 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2013-03-10T10:00:00Z`	`2013-03-10 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2013-11-03T09:00:00Z`	`2013-11-03 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2014-03-09T10:00:00Z`	`2014-03-09 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2014-11-02T09:00:00Z`	`2014-11-02 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2015-03-08T10:00:00Z`	`2015-03-08 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2015-11-01T09:00:00Z`	`2015-11-01 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2016-03-13T10:00:00Z`	`2016-03-13 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2016-11-06T09:00:00Z`	`2016-11-06 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2017-03-12T10:00:00Z`	`2017-03-12 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2017-11-05T09:00:00Z`	`2017-11-05 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2018-03-11T10:00:00Z`	`2018-03-11 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2018-11-04T09:00:00Z`	`2018-11-04 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2019-03-10T10:00:00Z`	`2019-03-10 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2019-11-03T09:00:00Z`	`2019-11-03 01:00:00`	-07:00 → -08:00	`PST`	No	overlap
`2020-03-08T10:00:00Z`	`2020-03-08 03:00:00`	-08:00 → -07:00	`PDT`	Yes	gap
`2020-11-01T07:00:00Z`	`2020-11-01 00:00:00`	-07:00 → -07:00	`MST`	No	offset-only

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.