Time in WST and MST
The time difference between Western Standard Time (WST) and Mountain Standard Time (MST) is 15 hours. Mountain Standard Time is 15 hours behind Western Standard Time.
This means 9am WST is 6pm MST (previous day) and 5pm WST is 2am MST.
Western Standard Time
- The current local time in WST is 11:45 am (July 1, 2026)
- WST time zone offset is UTC+08:00
Mountain Standard Time
- The current local time in MST is 10:45 am (July 1, 2026)
- MST time zone offset is UTC-07:00
How to convert Western Standard Time to Mountain Standard Time?
Subtract 15 hours from Western Standard Time to get Mountain Standard Time.
Time in WST
00:00
Time in MST
00:00
Use the slider above to convert Western Standard Time to Mountain Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| WST | MST |
|---|---|
| 12am | 9am |
| 1am | 10am |
| 2am | 11am |
| 3am | 12pm |
| 4am | 1pm |
| 5am | 2pm |
| 6am | 3pm |
| 7am | 4pm |
| 8am | 5pm |
| 9am | 6pm |
| 10am | 7pm |
| 11am | 8pm |
| 12pm | 9pm |
| 1pm | 10pm |
| 2pm | 11pm |
| 3pm | 12am |
| 4pm | 1am |
| 5pm | 2am |
| 6pm | 3am |
| 7pm | 4am |
| 8pm | 5am |
| 9pm | 6am |
| 10pm | 7am |
| 11pm | 8am |