Time in Alaska
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Time zones 
Alaska is covered by three time zones, as described below:
- Islands west of -169.5° (169°30'W) are in the Hawaii-Aleutian Time Zone (UTC−10:00, DST UTC−09:00). Daylight saving time (DST) is observed.
- Annette Island, home to the Metlakatla Indian Community, is in the Pacific Time Zone (UTC−08:00) and does not observe DST.
- The town of Hyder, because of its position as the eastern-most town in Alaska, unofficially observes Pacific Time including DST (UTC−08:00, DST UTC−07:00) like its neighbor Stewart, British Columbia, with the exception of the U.S. Post Office (because it is a federal facility).
- The rest of the state is in the Alaska Time Zone and observes DST (UTC−09:00, DST UTC−08:00).
tz database 
The tz database version 2012c contains seven time zones for Alaska for historical reasons. Only three (America/Adak, America/Anchorage, and America/Metlakatla) are currently necessary.
|CC||Coordinates||TZ||Comments||UTC offset||UTC offset DST||Notes|
|US||+581807-1342511||America/Juneau||Alaska Time - Alaska panhandle||−09:00||−08:00|
|US||+571035-1351807||America/Sitka||Alaska Time - southeast Alaska panhandle||−09:00||−08:00|
|US||+593249-1394338||America/Yakutat||Alaska Time - Alaska panhandle neck||−09:00||−08:00|
|US||+643004-1652423||America/Nome||Alaska Time - west Alaska||−09:00||−08:00|
|US||+550737-1313435||America/Metlakatla||Metlakatla Time - Annette Island||−08:00||−08:00|
- "Exceptions, Oddities and Notes". OnTimeZone.com. Retrieved 2012-06-17.