HST: Hawaii-Aleutian Standard Time
Hawaii-Aleutian Standard Time (HST). Hawaii, which stays on UTC−10 all year and does not observe daylight saving time.
No clock change is scheduled; the offset stays the same all year.
HST to AST: Hawaii-Aleutian Standard Time to Atlantic Time
6 hours ahead of HST
AST compared with HST, right now. Swap: AST to HST ⇄
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HST to AST conversion table
For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.
| HST | AST |
|---|---|
| 12:00 AM | 6:00 AM |
| 1:00 AM | 7:00 AM |
| 2:00 AM | 8:00 AM |
| 3:00 AM | 9:00 AM |
| 4:00 AM | 10:00 AM |
| 5:00 AM | 11:00 AM |
| 6:00 AM | 12:00 PM |
| 7:00 AM | 1:00 PM |
| 8:00 AM | 2:00 PM |
| 9:00 AM | 3:00 PM |
| 10:00 AM | 4:00 PM |
| 11:00 AM | 5:00 PM |
| 12:00 PM | 6:00 PM |
| 1:00 PM | 7:00 PM |
| 2:00 PM | 8:00 PM |
| 3:00 PM | 9:00 PM |
| 4:00 PM | 10:00 PM |
| 5:00 PM | 11:00 PM |
| 6:00 PM | 12:00 AM (next day) |
| 7:00 PM | 1:00 AM (next day) |
| 8:00 PM | 2:00 AM (next day) |
| 9:00 PM | 3:00 AM (next day) |
| 10:00 PM | 4:00 AM (next day) |
| 11:00 PM | 5:00 AM (next day) |
About these time zones
AST: Atlantic Standard Time
Atlantic Time (AST/ADT). Nova Scotia, New Brunswick and Prince Edward Island (with daylight saving), plus Puerto Rico and much of the Caribbean, which stay on AST (UTC−4) all year.
Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−4 → UTC−3).
Questions about HST and AST time
What is the time difference between HST and AST?
The current difference is shown at the top of this page. HST uses Hawaii-Aleutian Standard Time (HST, UTC−10) all year; AST uses Atlantic Standard Time (AST, UTC−4) as standard time and Atlantic Daylight Time (ADT, UTC−3) during daylight saving time. The difference can change if only one side observes daylight saving time or if their clocks change on different dates. Choose your meeting date in the converter to check the applicable offset.
When it is 9:00 AM in HST, what time is it in AST?
On Tuesday, November 3, 2026, 9:00 AM in HST was 3:00 PM in AST. The conversion table above shows today’s values.
Do the clocks change in HST or AST?
HST does not change its clocks. AST: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−4 → UTC−3).
Is HST the same as HST?
Hawaii-Aleutian Standard Time does not use daylight saving time, so HST applies all year.
Related conversions
- HST to UTC
- HST to GMT
- HST to EST
- HST to CST
- HST to MST
- HST to PST
- HST to AKST
- HST to BST
- HST to CET
- HST to EET
- HST to PKT
- HST to IST
- HST to SGT
- HST to PHT
- HST to JST
- HST to KST
- HST to AEST
- HST to NZST
- UTC to AST
- GMT to AST
- EST to AST
- CST to AST
- MST to AST
- PST to AST
- AKST to AST
- BST to AST
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