A Gazetteer for the United States and Canada
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Daylight Saving Time (DST)
Daylight Saving Time begins on the second Sunday of March at 2:00 AM and ends on the first Sunday of November at 2:00 AM:
For 2020, DST will begin on March 8th at 2:00 AM and will end on November 1st at 2:00 AM.
For 2021, DST will begin on March 14th at 2:00 AM and will end on November 7th at 2:00 AM.
For 2022, DST will begin on March 13th at 2:00 AM and will end on November 6th at 2:00 AM.
(See below for additional years.)
The Newfoundland Time Zone has a slightly different definition: DST begins one minute after midnight (12:01 AM) on the second Sunday in March and ends one minute after midnight (12:01 AM) on the first Sunday in November.
Not all communities observe Daylight Saving Time:
Most of Arizona does not observe DST. In northeastern Arizona, the Navajo Nation observes DST and the Hopi Nation (which lies within the Navajo Nation) does not.
Most of Alaska observes DST, but it is not observed in the Aleutian Islands or on Saint Lawrence Island.
Hawaii does not observe DST.
While most of British Columbia observes DST, some eastern communities do not.
Most of Saskatchewan does not observe DST, but some communities do.
In 2007, both the United States and Canada extended the duration of Daylight Saving Time by four weeks. Prior to the change, DST began on the first Sunday of April at 2:00 AM and ended on the last Sunday of October at 2:00 AM.
For the areas covered by our Gazetteer, the eastern-most time zone is the Newfoundland Time Zone and the western-most is the Hawaii-Aleutian Time Zone.
In order from east to west, the Time Zones are:
List of Daylight Saving Times:
The first year of the extended Daylight Saving Time occurred in 2007: It began on the second Sunday of March (the 11th) at 2:00 AM and ended on the first Sunday of November (the 4th) at 2:00 AM.
For the years 1987 to 2006, Daylight Saving Time began on the first Sunday of April at 2:00 AM and ended on the last Sunday of October at 2:00 AM.
For the years 1966 to 1986, Daylight Saving Time began on the last Sunday of April and ended on the last Sunday of October.
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This page was last modified: 20 Feb 2021