HST to MST Time Converter

When it's 12:00 PM HST, it's 3:00 PM MST 3 hours ahead

Convert Time

HST (Hawaii Standard Time)
--:--:--
MST (Mountain Standard Time)
--:--:--
= -- MST
Time in HSTTime in MST
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 AM (+1 day)
10:00 PM1:00 AM (+1 day)
11:00 PM2:00 AM (+1 day)

Daylight Saving Time (DST) may affect this conversion. HST does not observe DST. MST observes DST.

Major Cities in HST (Hawaii Standard Time)

  • Honolulu
  • East Honolulu
  • Pearl City
  • Makakilo / Kapolei / Honokai Hale
  • Kalihi-Palama

Major Cities in MST (Mountain Standard Time)

  • Denver
  • El Paso
  • Albuquerque
  • Colorado Springs
  • Salt Lake City
What is the time difference between HST and MST?

MST is 3 hours ahead compared to HST. When it's 12:00 PM (noon) in HST, it's 3:00 PM in MST.

Does Daylight Saving Time (DST) affect HST to MST conversion?

HST does not observe DST. MST observes DST. During DST transitions, the time difference may change by one hour.

What major cities use HST (Hawaii Standard Time)?

Major cities in the HST timezone include Honolulu, East Honolulu, Pearl City, Makakilo / Kapolei / Honokai Hale, Kalihi-Palama.

What is the best time to call from HST to MST?

The best time to call from HST to MST is between 9:00 AM and 5:00 PM HST, which is 12:00 PM to 8:00 PM MST. This ensures both parties are available during normal business hours (9 AM - 5 PM).