Most of Alaska is 9 hours behind Greenwich Mean Time (GMT-9). Almost all of Alaska is in the Alaska Time Zone. The western most Aleutian islands and St. Lawrence island are on Hawaii-Aleutian Time, which are 10 hours behind Greenwich Mean Time (GMT-10) and where Daylight-Saving Time is not observed
Like most states in the U.S., Daylight Saving Time is observed in Alaska, where the time is shifted forward by 1 hour, resulting in an 8 hours difference behind Greenwich Mean Time (GMT-8).
After the Summer months the time is shifted back by 1 hour resulting in the normal 9 hours difference behind GMT.
Since 1983: Any reference to Yukon standard time in any law, regulation, map, document, record, or other paper of the United States shall be held and considered to be a reference to Alaska standard time.
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