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HST to MST Time Converter

MST is 3 hours ahead of HST right now. 9:00 AM in HST is 12:00 PM in MST.

Time now: HST and MST

🌐 Hawaii Time2:01 PMMonday, November 9 · UTC-10:00
🌐 Mountain Time (US & Canada)5:01 PMMonday, November 9 · UTC-07:00

MST is 3 hours ahead of HST right now. The gap is not fixed: it is 3 hours at some times of the year and 4 hours at others, because at least one of them changes its clocks for daylight saving time.

HST to MST conversion table

Every hour of the day, using today's time difference.

HSTMST
12:00 AM3:00 AM
1:00 AM4:00 AM
2:00 AM5:00 AM
3:00 AM6:00 AM
4:00 AM7:00 AM
5:00 AM8:00 AM
6:00 AM9:00 AM
7:00 AM10:00 AM
8:00 AM11:00 AM
9:00 AM12:00 PM
10:00 AM1:00 PM
11:00 AM2:00 PM
12:00 PM3:00 PM
1:00 PM4:00 PM
2:00 PM5:00 PM
3:00 PM6:00 PM
4:00 PM7:00 PM
5:00 PM8:00 PM
6:00 PM9:00 PM
7:00 PM10:00 PM
8:00 PM11:00 PM
9:00 PM12:00 AMnext day
10:00 PM1:00 AMnext day
11:00 PM2:00 AMnext day

Best time to meet between HST and MST

Working hours overlap (9 AM – 6 PM in both places):

  • 9:00 AM – 3:00 PM HST = 12:00 PM – 6:00 PM MST

The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.

Does the time difference between HST and MST change?

Yes. Right now MST is 3 hours ahead of HST. These are the dates in the next 12 months when the gap changes:

  • Sunday, 14 March 2027: MST moves its clocks forward. MST is 4 hours ahead of HST from then (it was 3 hours before).
  • Sunday, 7 November 2027: MST moves its clocks back. MST is 3 hours ahead of HST from then (it was 4 hours before).

Office hours in each other's time

  • 9 AM to 6 PM in HST is 12:00 PM to 9:00 PM in MST.
  • 9 AM to 6 PM in MST is 6:00 AM to 3:00 PM in HST.

Based on today's clock settings.

Frequently asked questions

What is the time difference between HST and MST?

MST is 3 hours ahead of HST right now. The gap is not fixed: it is 3 hours at some times of the year and 4 hours at others, because at least one of them changes its clocks for daylight saving time.

How do I convert HST to MST?

Add 3 hours to the HST time to get the MST time (at today's difference). 9:00 AM in HST is 12:00 PM in MST. Or use the converter above and pick any date and time.

What is the current time in MST?

It is 5:01 PM in MST on Monday, November 9 (the converter above shows it live). At the same moment it is 2:01 PM in HST.

Does the time difference between HST and MST change during the year?

Yes. Right now MST is 3 hours ahead of HST. Over the next 12 months the gap changes 2 times: Sunday, 14 March 2027: MST moves its clocks forward. MST is 4 hours ahead of HST from then (it was 3 hours before). Sunday, 7 November 2027: MST moves its clocks back. MST is 3 hours ahead of HST from then (it was 4 hours before).

What is the best time for a meeting between HST and MST?

Between 9 AM and 6 PM in both places you can meet at 9:00 AM – 3:00 PM HST = 12:00 PM – 6:00 PM MST. Check the overlap section on this page for every option.

What does HST mean?

Hawaii does not use daylight saving time.

What does MST mean?

Mountain Time is MST (UTC-07:00) in winter and MDT (UTC-06:00) in summer. Arizona stays on MST all year.

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