Time in CHAST and MST
The time difference between Chatham Standard Time (CHAST) and Mountain Standard Time (MST) is 19 hours 45 minutes. Mountain Standard Time is 19 hours 45 minutes behind Chatham Standard Time.
This means 9am CHAST is 1:15pm MST (previous day) and 5pm CHAST is 9:15pm MST (previous day).
Chatham Standard Time
- The current local time in CHAST is 11:36 am (June 4, 2026)
- CHAST time zone offset is UTC+12:45
Mountain Standard Time
- The current local time in MST is 5:51 am (June 4, 2026)
- MST time zone offset is UTC-07:00
How to convert Chatham Standard Time to Mountain Standard Time?
Subtract 19 hours 45 minutes from Chatham Standard Time to get Mountain Standard Time.
Time in CHAST
00:00
Time in MST
00:00
Use the slider above to convert Chatham 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
| CHAST | MST |
|---|---|
| 12am | 4:15am |
| 1am | 5:15am |
| 2am | 6:15am |
| 3am | 7:15am |
| 4am | 8:15am |
| 5am | 9:15am |
| 6am | 10:15am |
| 7am | 11:15am |
| 8am | 12:15pm |
| 9am | 1:15pm |
| 10am | 2:15pm |
| 11am | 3:15pm |
| 12pm | 4:15pm |
| 1pm | 5:15pm |
| 2pm | 6:15pm |
| 3pm | 7:15pm |
| 4pm | 8:15pm |
| 5pm | 9:15pm |
| 6pm | 10:15pm |
| 7pm | 11:15pm |
| 8pm | 0:15am |
| 9pm | 1:15am |
| 10pm | 2:15am |
| 11pm | 3:15am |