Hawaii-Aleutian Standard Time (HST)
HST is UTC-10. Current Hawaii Time and when HST applies.
Hawaii Time now
--:--:--
Tuesday, November 3, 2026
HSTUTC-10
Hawaii-Aleutian Time is on HST right now
Hawaii-Aleutian Time now: --:--:-- (HST)
About HST
- Full Name
- Hawaii-Aleutian Standard Time
- Abbreviation
- HST
- UTC Offset
- UTC-10
- Hawaii Time is on
- Standard Time (HST)
- Daylight Saving Time
- Hawaii-Aleutian Time: Starts Mar 14, 2027
Hawaii-Aleutian Standard Time (HST) is UTC-10. Hawaii uses it all year and does not observe daylight saving time. The western Aleutian Islands of Alaska also use HST but switch to Hawaii-Aleutian Daylight Time (HDT, UTC-9) in summer.
Where HST is used
Changes seasonally
- The western Aleutian Islands, Alaska (Adak)
HST all year (no DST)
- Hawaii, United States (Honolulu)
Major Cities in Hawaii Time
Each city shows its own current abbreviation, so places on daylight saving time are labelled accordingly.
HST vs Other Time Zones
| Comparison | By definition | Right now (local clocks) |
|---|---|---|
| HST to AKST | +1 hour | +1 hour |
| HST to PST | +2 hours | +2 hours |
| HST to UTC | +10 hours | +10 hours |
“By definition” compares the fixed offsets of the abbreviations. “Right now” compares the actual local time in each region today, including daylight saving time.
HST FAQs
What is HST?
Hawaii-Aleutian Standard Time (HST) is UTC-10. Hawaii uses it all year and does not observe daylight saving time. The western Aleutian Islands of Alaska also use HST but switch to Hawaii-Aleutian Daylight Time (HDT, UTC-9) in summer.
What is the UTC offset of HST?
HST is always UTC-10.
Is Hawaii-Aleutian Time on HST right now?
Hawaii-Aleutian Time is on HST right now. HST is UTC-10. Hawaii-Aleutian Time switches to HDT (UTC-9) on Sunday, March 14, 2027 at 2:00 AM.
When does Hawaii-Aleutian Time change its clocks?
In 2026, Hawaii-Aleutian Time switches to HDT on Sunday, March 8, 2026 at 2:00 AM (clocks go forward 1 hour) and back on Sunday, November 1, 2026 at 2:00 AM (clocks go back 1 hour).
Where is HST used all year?
These places use UTC-10 all year without daylight saving time: Hawaii, United States (Honolulu).