Also known as: HAST – Hawaii-Aleutian Standard Time
Hawaii Standard Time (HST) is 10 hours behind Coordinated Universal Time (UTC). This time zone is in use during standard time in: North America, Pacific.
Where and When is HST Observed?
North America
US states using HST in the winter and HDT in the summer:
US states using HST all year:
Other Time Zones in UTC -10
Some time zones exist that have the same offset as HST, but can be found under a different name: