Offset
The time difference between Iran Standard Time and Coordinated Universal Time is 3.5 hours.
Iran Standard Time (IRST) is ahead of Coordinated Universal Time (UTC).
IRST: UTC+3:30
UTC: UTC
Neither Iran Standard Time nor Coordinated Universal Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 1 PM–5 PM in Iran Standard Time (9 AM–1 PM in Coordinated Universal Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Iran Standard Time (11:30 AM Coordinated Universal Time).
About these zones
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Coordinated Universal Time is also known as UTC.
Coordinated Universal Time is approximately 4,100 miles southwest of Iran Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| IRST | UTC | Day |
|---|---|---|
| 12:00 am | 8:30 pm | -1 day |
| 1:00 am | 9:30 pm | -1 day |
| 2:00 am | 10:30 pm | -1 day |
| 3:00 am | 11:30 pm | -1 day |
| 4:00 am | 12:30 am | Same day |
| 5:00 am | 1:30 am | Same day |
| 6:00 am | 2:30 am | Same day |
| 7:00 am | 3:30 am | Same day |
| 8:00 am | 4:30 am | Same day |
| 9:00 am | 5:30 am | Same day |
| 10:00 am | 6:30 am | Same day |
| 11:00 am | 7:30 am | Same day |
| 12:00 pm | 8:30 am | Same day |
| 1:00 pm | 9:30 am | Same day |
| 2:00 pm | 10:30 am | Same day |
| 3:00 pm | 11:30 am | Same day |
| 4:00 pm | 12:30 pm | Same day |
| 5:00 pm | 1:30 pm | Same day |
| 6:00 pm | 2:30 pm | Same day |
| 7:00 pm | 3:30 pm | Same day |
| 8:00 pm | 4:30 pm | Same day |
| 9:00 pm | 5:30 pm | Same day |
| 10:00 pm | 6:30 pm | Same day |
| 11:00 pm | 7:30 pm | Same day |
Daylight saving time
Neither Iran Standard Time nor Coordinated Universal Time observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
- Sunrise
- 5:56 AM
- Sunset
- 6:03 PM
- Day length
- 12h 7m
Daylight overlap: 9h 52m — 9:26 AM–7:18 PM in Iran Standard Time (5:56 AM–3:48 PM in Coordinated Universal Time). Both locations are in daylight during this window.
Cities in these zones
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Iran Standard Time
- IKA
- THR
- MHD
- IFN
- PYK
- TBZ
Related conversions
Common conversions
- What is 9:00 am IRST in UTC?
- 9:00 am IRST is 5:30 am UTC.
- What is 12:00 pm IRST in UTC?
- 12:00 pm IRST is 8:30 am UTC.
- What is 12:30 pm IRST in UTC?
- 12:30 pm IRST is 9:00 am UTC.
- What is 2:00 pm IRST in UTC?
- 2:00 pm IRST is 10:30 am UTC.
- What is 5:00 pm IRST in UTC?
- 5:00 pm IRST is 1:30 pm UTC.
- What is 11:30 pm IRST in UTC?
- 11:30 pm IRST is 8:00 pm UTC.