24TimeZones.com Time zone abbreviations HAST

Current HAST time


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What is Hawaii-Aleutian Standard Time

HAST timing

HAST (Hawaii-Aleutian Standard Time) is one of the well-known names of UTC-10 time zone which is 10h. behind of UTC (Coordinated Universal Time).The time offset from UTC can be written as -10:00.

It's used during the winter. During the summer HADT - Hawaii-Aleutian Daylight Time (UTC-9) is in use.

Some locations use HAST all year long.

Time difference to GMT/UTC

10 hours behind (UTC-10)

Related timezone


Iana Timezones where HAST is currently observed


Other Time Zones in UTC-10

Abbreviation Name
CKT Cook Island Time
TAHT Tahiti Time

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