Open main menu

Wikipedia β

Hawaii–Aleutian Time Zone

The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST[1][2]), 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.

Hawaii–Aleutian Time Zone
Timezoneswest.PNG
UTC offset
HAST UTC−10:00
HADT UTC−09:00
Current time (Refresh the clock)
1:54 PM, June 20, 2018 HADT [refresh]
Observance of DST
DST is observed in some of this time zone.

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, UTC−09:00), while Hawaii stays on standard time.

From 1900 until 1947, GMT−10:30 was used as standard time in Hawaii.[3]

French Polynesia uses UTC−10 for its major cities. The Cook Islands also use the same time. These areas do not use DST. "Hawaii–Aleutian Time Zone" is a U.S. term and for that reason the Polynesian areas are not considered to be a part of the Hawaii–Aleutian Time Zone.

Contents

Major metropolitan areasEdit

Other significant placesEdit

See alsoEdit

ReferencesEdit

  1. ^ ""U.S. Government Printing Office Style Manual: An official guide to the form and style of Federal Government printing"" (PDF). U.S. Government Printing Office. 2008. p. 234. Retrieved 2017-07-24. Time zones §9.47. The following forms are to be used when abbreviating names of time zones: ... HDT—Hawaii-Aleutian daylight time (not observed in HI) ... HST—Hawaii-Aleutian standard time 
  2. ^ ""What are the time zones in the United States?"". National Institute of Standards and Technology, U.S. Department of Commerce. 2016. Retrieved 2017-07-24. Hawaii-Aleutian (HT); HST -10; HDT -9; DST observed in Aleutian Islands, but not Hawaii 
  3. ^ "Sources for Time Zone and Daylight Saving Time Data". Retrieved 2012-06-18. [not in citation given]

External linksEdit