HST Time Now — Hawaii Standard Time
The current HST time (Hawaii Standard Time, UTC -10:00) is shown below.
HST — UTC -10:00
05:40:54
Thursday, 22 October 2026 HST
Where HST is used
In 2026, 1 zone in the tz database show HST , all of them all year round.
| Zone | Country | January | July |
|---|---|---|---|
| Pacific/Honolulu | United States | HST -10:00 | HST -10:00 |
About HST
Offset & DST
UTC offset: -10:00
Daylight saving: Not observed
Representative IANA zone: Pacific/Honolulu
IANA zones at HST
Converting HST to other time zones
HST is fixed at UTC -10:00 — written -1000 in email headers and -10:00 in ISO 8601 timestamps. The table below uses each abbreviation's own fixed offset; for a specific place, check its city page, since local clocks switch between standard and daylight abbreviations.
| Zone | Difference | When it's 12:00 HST | Converter |
|---|---|---|---|
| UTC Coordinated Universal Time | +10 h | 22:00 | Hour by hour → |
| PST Pacific Standard Time | +2 h | 14:00 | Hour by hour → |
| MST Mountain Standard Time | +3 h | 15:00 | Hour by hour → |
| CST Central Standard Time | +4 h | 16:00 | Hour by hour → |
| EST Eastern Standard Time | +5 h | 17:00 | Hour by hour → |
| BRT Brasília Time | +7 h | 19:00 | Hour by hour → |
| BST British Summer Time | +11 h | 23:00 | Hour by hour → |
| CET Central European Time | +11 h | 23:00 | Hour by hour → |
| EET Eastern European Time | +12 h | 00:00 (+1 day) | Hour by hour → |
| MSK Moscow Standard Time | +13 h | 01:00 (+1 day) | Hour by hour → |
| GST Gulf Standard Time | +14 h | 02:00 (+1 day) | Hour by hour → |
| IST India Standard Time | +15:30 h | 03:30 (+1 day) | Hour by hour → |
| CST China Standard Time | +18 h | 06:00 (+1 day) | Hour by hour → |
| JST Japan Standard Time | +19 h | 07:00 (+1 day) | Hour by hour → |
| AEST Australian Eastern Standard Time | +20 h | 08:00 (+1 day) | Hour by hour → |
Countries commonly using HST
HST questions
- What is HST in UTC?
- HST (Hawaii Standard Time) is UTC -10:00. In ISO 8601 timestamps it is written -10:00, in email and HTTP headers -1000.
- Which countries use HST?
- In 2026, zones showing HST are found in United States.
More tools for HST
Look up the exact IANA zone behind HST, see it on the offset map, or compare it against other cities.