Offset
The time difference between Coordinated Universal Time and Iran Standard Time is 3.5 hours.
Coordinated Universal Time (UTC) is behind Iran Standard Time (IRST).
UTC: UTC
IRST: UTC+3:30
Neither Coordinated Universal Time nor Iran Standard Time is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–2 PM in Coordinated Universal Time (12 PM–5 PM in Iran Standard Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 11:00 AM Coordinated Universal Time (2:30 PM Iran Standard Time).
About these zones
Coordinated Universal Time is also known as UTC.
Iran Standard Time is also known as IRST. To call Iran, dial +98.
Iran Standard Time is approximately 4,100 miles northeast of Coordinated Universal Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| UTC | IRST | Day |
|---|---|---|
| 12:00 am | 3:30 am | Same day |
| 1:00 am | 4:30 am | Same day |
| 2:00 am | 5:30 am | Same day |
| 3:00 am | 6:30 am | Same day |
| 4:00 am | 7:30 am | Same day |
| 5:00 am | 8:30 am | Same day |
| 6:00 am | 9:30 am | Same day |
| 7:00 am | 10:30 am | Same day |
| 8:00 am | 11:30 am | Same day |
| 9:00 am | 12:30 pm | Same day |
| 10:00 am | 1:30 pm | Same day |
| 11:00 am | 2:30 pm | Same day |
| 12:00 pm | 3:30 pm | Same day |
| 1:00 pm | 4:30 pm | Same day |
| 2:00 pm | 5:30 pm | Same day |
| 3:00 pm | 6:30 pm | Same day |
| 4:00 pm | 7:30 pm | Same day |
| 5:00 pm | 8:30 pm | Same day |
| 6:00 pm | 9:30 pm | Same day |
| 7:00 pm | 10:30 pm | Same day |
| 8:00 pm | 11:30 pm | Same day |
| 9:00 pm | 12:30 am | +1 day |
| 10:00 pm | 1:30 am | +1 day |
| 11:00 pm | 2:30 am | +1 day |
Daylight saving time
Neither Coordinated Universal Time nor Iran Standard 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
- 5:56 AM
- Sunset
- 6:03 PM
- Day length
- 12h 7m
- Sunrise
- 4:50 AM
- Sunset
- 7:18 PM
- Day length
- 14h 28m
Daylight overlap: 9h 52m — 5:56 AM–3:48 PM in Coordinated Universal Time (9:26 AM–7:18 PM in Iran Standard 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 UTC in IRST?
- 9:00 am UTC is 12:30 pm IRST.
- What is 12:00 pm UTC in IRST?
- 12:00 pm UTC is 3:30 pm IRST.
- What is 12:30 pm UTC in IRST?
- 12:30 pm UTC is 4:00 pm IRST.
- What is 2:00 pm UTC in IRST?
- 2:00 pm UTC is 5:30 pm IRST.
- What is 5:00 pm UTC in IRST?
- 5:00 pm UTC is 8:30 pm IRST.
- What is 11:30 pm UTC in IRST?
- 11:30 pm UTC is 3:00 am IRST, the next day.