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 MST: Hawaii-Aleutian Standard Time to Mountain Time
3 hours ahead of HST
MST compared with HST, right now. Swap: MST to HST ⇄
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HST to MST conversion table
For Tuesday, November 3, 2026. Rows where both places are inside 9 AM–5 PM are highlighted.
| HST | MST |
|---|---|
| 12:00 AM | 3:00 AM |
| 1:00 AM | 4:00 AM |
| 2:00 AM | 5:00 AM |
| 3:00 AM | 6:00 AM |
| 4:00 AM | 7:00 AM |
| 5:00 AM | 8:00 AM |
| 6:00 AM | 9:00 AM |
| 7:00 AM | 10:00 AM |
| 8:00 AM | 11:00 AM |
| 9:00 AM | 12:00 PM |
| 10:00 AM | 1:00 PM |
| 11:00 AM | 2:00 PM |
| 12:00 PM | 3:00 PM |
| 1:00 PM | 4:00 PM |
| 2:00 PM | 5:00 PM |
| 3:00 PM | 6:00 PM |
| 4:00 PM | 7:00 PM |
| 5:00 PM | 8:00 PM |
| 6:00 PM | 9:00 PM |
| 7:00 PM | 10:00 PM |
| 8:00 PM | 11:00 PM |
| 9:00 PM | 12:00 AM (next day) |
| 10:00 PM | 1:00 AM (next day) |
| 11:00 PM | 2:00 AM (next day) |
About these time zones
MST: Mountain Standard Time
Mountain Time (MST/MDT). Denver, Salt Lake City, Albuquerque, Boise and Calgary. MST is UTC−7; in summer most of the region uses MDT, UTC−6. Most of Arizona stays on MST all year.
Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−7 → UTC−6).
Questions about HST and MST time
What is the time difference between HST and MST?
The current difference is shown at the top of this page. HST uses Hawaii-Aleutian Standard Time (HST, UTC−10) all year; MST uses Mountain Standard Time (MST, UTC−7) as standard time and Mountain Daylight Time (MDT, UTC−6) 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 MST?
On Tuesday, November 3, 2026, 9:00 AM in HST was 12:00 PM in MST. The conversion table above shows today’s values.
Do the clocks change in HST or MST?
HST does not change its clocks. MST: Sunday, March 14, 2027: clocks go forward 1 hour at 2:00 AM local time (UTC−7 → UTC−6).
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 PST
- HST to AKST
- HST to AST
- 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 MST
- GMT to MST
- EST to MST
- CST to MST
- PST to MST
- AKST to MST
- AST to MST
- BST to MST
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