MST to HST Converter
HST is 3 hours behind MST
MST to HST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in HST
| MST | HST |
|---|---|
| 12:00 AM | 9:00 PM -1d |
| 1:00 AM | 10:00 PM -1d |
| 2:00 AM | 11:00 PM -1d |
| 3:00 AM | 12:00 AM |
| 4:00 AM | 1:00 AM |
| 5:00 AM | 2:00 AM |
| 6:00 AM | 3:00 AM |
| 7:00 AM | 4:00 AM |
| 8:00 AM | 5:00 AM |
| 9:00 AM | 6:00 AM |
| 10:00 AM | 7:00 AM |
| 11:00 AM | 8:00 AM |
| 12:00 PM | 9:00 AM |
| 1:00 PM | 10:00 AM |
| 2:00 PM | 11:00 AM |
| 3:00 PM | 12:00 PM |
| 4:00 PM | 1:00 PM |
| 5:00 PM | 2:00 PM |
| 6:00 PM | 3:00 PM |
| 7:00 PM | 4:00 PM |
| 8:00 PM | 5:00 PM |
| 9:00 PM | 6:00 PM |
| 10:00 PM | 7:00 PM |
| 11:00 PM | 8:00 PM |
Converting Mountain Standard Time to Hawaii Standard Time
Mountain Standard Time (MST) and Hawaii Standard Time (HST) are separated by a 3 hours time difference. HST is 3 hours behind MST. MST is UTC-7, used in United States, Canada, while HST is UTC-10, used in United States.
When converting from MST to HST, the key reference points to remember are: 9:00 AM MST equals 6:00 AM HST, 12:00 PM noon MST equals 9:00 AM HST, and 5:00 PM MST equals 2:00 PM HST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across MST and HST
For professionals scheduling meetings between MST and HST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 3 hours difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
MST observes Daylight Saving Time, switching to MDT (UTC-6) during summer months. HST does not observe DST, staying at UTC-10 year-round. During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.