Time in MST and IRDT
The time difference between Mountain Standard Time (MST) and Iran Daylight Time (IRDT) is 11 hours 30 minutes. Iran Daylight Time is 11 hours 30 minutes ahead of Mountain Standard Time.
This means 9am MST is 8:30pm IRDT and 5pm MST is 4:30am IRDT (next day).
Mountain Standard Time
- The current local time in MST is 3:27 am (July 3, 2026)
- MST time zone offset is UTC-07:00
Iran Daylight Time
- The current local time in IRDT is 12:57 am (July 3, 2026)
- IRDT time zone offset is UTC+04:30
How to convert Mountain Standard Time to Iran Daylight Time?
Add 11 hours 30 minutes to Mountain Standard Time to get Iran Daylight Time.
Time in MST
00:00
Time in IRDT
00:00
Use the slider above to convert Mountain Standard Time to Iran Daylight 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
| MST | IRDT |
|---|---|
| 12am | 11:30am |
| 1am | 12:30pm |
| 2am | 1:30pm |
| 3am | 2:30pm |
| 4am | 3:30pm |
| 5am | 4:30pm |
| 6am | 5:30pm |
| 7am | 6:30pm |
| 8am | 7:30pm |
| 9am | 8:30pm |
| 10am | 9:30pm |
| 11am | 10:30pm |
| 12pm | 11:30pm |
| 1pm | 0:30am |
| 2pm | 1:30am |
| 3pm | 2:30am |
| 4pm | 3:30am |
| 5pm | 4:30am |
| 6pm | 5:30am |
| 7pm | 6:30am |
| 8pm | 7:30am |
| 9pm | 8:30am |
| 10pm | 9:30am |
| 11pm | 10:30am |