Time in AST and MST
The time difference between Atlantic Standard Time (AST) and Mountain Standard Time (MST) is 3 hours. Mountain Standard Time is 3 hours behind Atlantic Standard Time.
Atlantic Standard Time
- The current local time in AST is 1:11 pm (April 26, 2024)
- AST time zone offset is UTC-04:00
Mountain Standard Time
- The current local time in MST is 10:11 am (April 26, 2024)
- MST time zone offset is UTC-07:00
How to convert Atlantic Standard Time to Mountain Standard Time?
Subtract 3 hours from Atlantic Standard Time to get Mountain Standard Time.
Time in AST
00:00
Time in MST
00:00
Use the slider above to convert Atlantic 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
| AST | MST |
|---|---|
| 12am | 9pm |
| 1am | 10pm |
| 2am | 11pm |
| 3am | 12am |
| 4am | 1am |
| 5am | 2am |
| 6am | 3am |
| 7am | 4am |
| 8am | 5am |
| 9am | 6am |
| 10am | 7am |
| 11am | 8am |
| 12pm | 9am |
| 1pm | 10am |
| 2pm | 11am |
| 3pm | 12pm |
| 4pm | 1pm |
| 5pm | 2pm |
| 6pm | 3pm |
| 7pm | 4pm |
| 8pm | 5pm |
| 9pm | 6pm |
| 10pm | 7pm |
| 11pm | 8pm |