Hawaii–Aleutian Time Zone
||This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (June 2012)|
|Hawaii-Aleutian Time Zone|
|Observance of DST|
|DST is observed in certain regions of this time zone between the 2nd Sunday in March and the 1st Sunday in November.|
|DST began||10 Mar 2013|
|DST ends||3 Nov 2013|
The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST), by subtracting ten hours from Coordinated Universal Time (UTC−10). 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. During daylight saving time, the Alaskan portion observes Hawaii–Aleutian Daylight Time (HDT), while Hawaii stays on standard time.
Major metropolitan areas 
See also 
- "Sources for Time Zone and Daylight Saving Time Data". Retrieved 2012-06-18.[not in citation given]
- "Physical Measurement Laboratory Frequently asked questions (FAQ)". What are the time zones in the United States?. The National Institute of Standards and Technology (NIST). Retrieved 22 March 2011.
- HAST – Hawaii–Aleutian Standard Time
- HADT – Hawaii–Aleutian Daylight Time
- The official U.S. time for the Hawaii–Aleutian time zone (Hawaii)
- The official U.S. time for the Hawaii–Aleutian time zone (Aleutian Islands)
|Time zones in North America|
|Time zone||Hours from UTC: Standard time||Hours from UTC: Daylight saving|
|Hawaii-Aleutian||–10||–9 (Alaska portion only)|
|Saint Pierre and Miquelon||–3||–2|