GMT to MST Time Converter
About this conversion
MST is Mountain Standard Time (UTC-7). Most of Arizona stays on MST all year, while Denver and Salt Lake City switch to MDT (UTC-6) in summer.
When the time difference changes
Both sides keep a fixed offset, so the gap does not change in the next two years.
Best time to call or meet
16:00 to 17:00 GMT is 09:00 to 10:00 MST, 1 hour of shared 09:00 to 17:00 time.
Common times
- 06:00 GMT = 23:00 MST (previous day)
- 09:00 GMT = 02:00 MST
- 12:00 GMT = 05:00 MST
- 15:00 GMT = 08:00 MST
- 17:00 GMT = 10:00 MST
- 20:00 GMT = 13:00 MST
GMT to MST hour-by-hour table
Highlighted rows fall within 09:00 to 17:00 on both sides.
| GMT | MST |
|---|---|
| 00:00 | 17:00 (previous day) |
| 01:00 | 18:00 (previous day) |
| 02:00 | 19:00 (previous day) |
| 03:00 | 20:00 (previous day) |
| 04:00 | 21:00 (previous day) |
| 05:00 | 22:00 (previous day) |
| 06:00 | 23:00 (previous day) |
| 07:00 | 00:00 |
| 08:00 | 01:00 |
| 09:00 | 02:00 |
| 10:00 | 03:00 |
| 11:00 | 04:00 |
| 12:00 | 05:00 |
| 13:00 | 06:00 |
| 14:00 | 07:00 |
| 15:00 | 08:00 |
| 16:00 | 09:00 |
| 17:00 | 10:00 |
| 18:00 | 11:00 |
| 19:00 | 12:00 |
| 20:00 | 13:00 |
| 21:00 | 14:00 |
| 22:00 | 15:00 |
| 23:00 | 16:00 |
Related conversions
Frequently asked questions
What is 15:00 GMT in MST?
15:00 GMT is 08:00 MST at the moment. The answer can change by an hour when either side changes its clocks.
What are the shared working hours for GMT and MST?
16:00 to 17:00 GMT is 09:00 to 10:00 MST, 1 hour of shared 09:00 to 17:00 time.
When does the GMT to MST time difference change?
It does not change in the next two years.