HST(Hawaii Standard Time)
Hawaii Standard Time (HST) is the civil time of Hawaii, ten hours behind UTC.
- UTC offset
- UTC−10:00
- Abbreviation
- HST
- Full name
- Hawaii Standard Time
- Military letter
- Whiskey (W)
- Regions
- Hawaii (United States), French Polynesia
- IANA zones
- Pacific/Honolulu, Pacific/Tahiti
- Converter model
- Fixed offset.
What HST means
HST is the year-round civil time of the state of Hawaii, and the same offset is used by French Polynesia's main islands.
- Hawaii keeps the same offset all year, which makes HST unusually stable compared with other North American abbreviations.
- The wider label Hawaii-Aleutian Standard Time (HAST) covers both Hawaii and the western Aleutian Islands.
Cities on this offset
These cities keep UTC−10:00 as their standard offset:
- Honolulu
- Hilo
- Kailua-Kona
- Papeete
History
Hawaii settled on a whole-hour offset from UTC in 1947, replacing an earlier offset of 10 hours and 30 minutes that dated from the Kingdom of Hawaii's own standard.
Do not confuse with
- HAST — Hawaii-Aleutian Standard Time
- AKST — Alaska Standard Time