Convert HST Timezone
Convert Hawaii-Aleutian Standard Time (HST) to and from any other time zone.
Convert HST to any other time zone and back. HST is Hawaii-Aleutian Standard Time, which runs at UTC-10:00.
The clock below starts on HST using Honolulu, United States, so you can read straight across to the cities you care about. Add or remove rows to build the comparison you need, and set a date and time to check a moment in the past or future.
- General Working Hours
- General Non-Working Hours
- Sleeping Hours & Public Holidays
- * Indicates Daylight Saving Time is in effect.
For more converters, browse our full list of time zone converters.
HST covers 7 IANA time zones, including America/Adak, America/Atka, HST, Pacific/Honolulu, Pacific/Johnston, US/Aleutian and 1 more. Daylight saving is applied automatically for whichever zone a city actually uses, so the result stays correct across the changeover.
The standard time used in Hawaii and the portion of the Aleutian Islands that is west of -169.5° West longitude. Hawaii does not observe daylight saving time, remaining on HST year-round. The Aleutian Islands part does observe DST (HDT).
See the HST time zone overview for the full picture, or the full time zone converter to compare any cities you like.