Hawaii–Aleutian Time Zone

Hawaii–Aleutian Time Zone
Time zone
UTC offset
HSTUTC−10:00
HDTUTC−09:00
Current time
08:05, 13 September 2026 HST [refresh]
09:05, 13 September 2026 HDT [refresh]
Observance of DST
DST is observed in some of this time zone.

The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST) by subtracting ten hours from Coordinated Universal Time (UTC−10:00). The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich Observatory.

The zone takes its name from the two areas it includes: Hawaii and the portion of Alaska's Aleutian Islands west of 169° 30′ W longitude.

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