Alaska Standard Time Zone
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The Alaska Standard Time Zone (AKST) is a geographic region that keeps time by subtracting nine hours from Coordinated Universal Time (UTC).
It includes all of the U.S. state of Alaska, except for the Aleutian Islands west of 169° 30′ west. The western Aleutians observe Hawaii-Aleutian Time, one hour behind the remainder of the state.
The Alaska Standard Time Zone is the same as the Yukon Standard Time Zone (YST). However, the Yukon Territory switched to the Pacific Standard Time Zone in 1983 and the time zone was not used (except for Yakutat) until 1983 when the state of Alaska decided to move most of the state to UTC-9. Prior to that the Alaska Panhandle communities were on the Pacific Time Zone, while most of the interior was on UTC-10. Nome and the Aleutians previously observed Bering Standard Time or UTC-11.