Alaska Standard Time

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Standard time in the ninth time zone west of Greenwich, England, reckoned at 135°W and used throughout Alaska except for the western Aleutian Islands. Also called Alaska Time.

Wiktionary

1. n. the time of day in the time zone that encompasses most of Alaska.

WordNet 3.0

1. n. standard time in the 9th time zone west of Greenwich, reckoned at the 135th meridian west; used in Hawaii and most of Alaska