Time in IRDT and MST
The time difference between Iran Daylight Time (IRDT) and Mountain Standard Time (MST) is 11 hours 30 minutes. Mountain Standard Time is 11 hours 30 minutes behind Iran Daylight Time.
This means 9am IRDT is 9:30pm MST (previous day) and 5pm IRDT is 5:30am MST.
Iran Daylight Time
- The current local time in IRDT is 11:29 am (September 2, 2026)
- IRDT time zone offset is UTC+04:30
Mountain Standard Time
- The current local time in MST is 1:59 pm (September 2, 2026)
- MST time zone offset is UTC-07:00
How to convert Iran Daylight Time to Mountain Standard Time?
Subtract 11 hours 30 minutes from Iran Daylight Time to get Mountain Standard Time.
Time in IRDT
00:00
Time in MST
00:00
Use the slider above to convert Iran Daylight 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
| IRDT | MST |
|---|---|
| 12am | 12:30pm |
| 1am | 1:30pm |
| 2am | 2:30pm |
| 3am | 3:30pm |
| 4am | 4:30pm |
| 5am | 5:30pm |
| 6am | 6:30pm |
| 7am | 7:30pm |
| 8am | 8:30pm |
| 9am | 9:30pm |
| 10am | 10:30pm |
| 11am | 11:30pm |
| 12pm | 0:30am |
| 1pm | 1:30am |
| 2pm | 2:30am |
| 3pm | 3:30am |
| 4pm | 4:30am |
| 5pm | 5:30am |
| 6pm | 6:30am |
| 7pm | 7:30am |
| 8pm | 8:30am |
| 9pm | 9:30am |
| 10pm | 10:30am |
| 11pm | 11:30am |