Time in IRST and GMT
The time difference between Iran Standard Time (IRST) and Greenwich Mean Time (GMT) is 3 hours 30 minutes. Greenwich Mean Time is 3 hours 30 minutes behind Iran Standard Time.
This means 9am IRST is 5:30am GMT and 5pm IRST is 1:30pm GMT.
Iran Standard Time
- The current local time in IRST is 2:13 am (July 19, 2026)
- IRST time zone offset is UTC+03:30
Greenwich Mean Time
- The current local time in GMT is 10:43 pm (July 18, 2026)
- GMT time zone offset is UTC+00:00
How to convert Iran Standard Time to Greenwich Mean Time?
Subtract 3 hours 30 minutes from Iran Standard Time to get Greenwich Mean Time.
Time in IRST
00:00
Time in GMT
00:00
Use the slider above to convert Iran Standard Time to Greenwich Mean 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
| IRST | GMT |
|---|---|
| 12am | 8:30pm |
| 1am | 9:30pm |
| 2am | 10:30pm |
| 3am | 11:30pm |
| 4am | 0:30am |
| 5am | 1:30am |
| 6am | 2:30am |
| 7am | 3:30am |
| 8am | 4:30am |
| 9am | 5:30am |
| 10am | 6:30am |
| 11am | 7:30am |
| 12pm | 8:30am |
| 1pm | 9:30am |
| 2pm | 10:30am |
| 3pm | 11:30am |
| 4pm | 12:30pm |
| 5pm | 1:30pm |
| 6pm | 2:30pm |
| 7pm | 3:30pm |
| 8pm | 4:30pm |
| 9pm | 5:30pm |
| 10pm | 6:30pm |
| 11pm | 7:30pm |