IRST to UTC converter

Iran Time (Tehran) to Coordinated Universal Time (the world reference time).

IRST3:37 AMSat 31 Oct 2026

→

UTC12:07 AMSat 31 Oct 2026

UTC is 3 h 30 min behind IRST.

Pick a time in IRST

⇄ UTC to IRST

9:00 AM IRST = 5:30 AM UTC same day

Best time to meet

The best time to meet is between 1:00 PM and 5:00 PM IRST, which is 9:30 AM to 1:30 PM UTC. Both sides are then inside 9 AM to 5 PM.

IRST to UTC time table

For 31 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

IRST	UTC
12:00 AM IRST	8:30 PM UTC previous day
1:00 AM IRST	9:30 PM UTC previous day
2:00 AM IRST	10:30 PM UTC previous day
3:00 AM IRST	11:30 PM UTC previous day
4:00 AM IRST	12:30 AM UTC
5:00 AM IRST	1:30 AM UTC
6:00 AM IRST	2:30 AM UTC
7:00 AM IRST	3:30 AM UTC
8:00 AM IRST	4:30 AM UTC
9:00 AM IRST	5:30 AM UTC
10:00 AM IRST	6:30 AM UTC
11:00 AM IRST	7:30 AM UTC
12:00 PM IRST	8:30 AM UTC
1:00 PM IRST	9:30 AM UTC
2:00 PM IRST	10:30 AM UTC
3:00 PM IRST	11:30 AM UTC
4:00 PM IRST	12:30 PM UTC
5:00 PM IRST	1:30 PM UTC
6:00 PM IRST	2:30 PM UTC
7:00 PM IRST	3:30 PM UTC
8:00 PM IRST	4:30 PM UTC
9:00 PM IRST	5:30 PM UTC
10:00 PM IRST	6:30 PM UTC
11:00 PM IRST	7:30 PM UTC

Quick answers

9:00 AM IRST = 5:30 AM UTC
12:00 PM IRST = 8:30 AM UTC
3:00 PM IRST = 11:30 AM UTC
5:00 PM IRST = 1:30 PM UTC
9:00 AM UTC = 12:30 PM IRST
12:00 PM UTC = 3:30 PM IRST
5:00 PM UTC = 8:30 PM IRST

Does the gap change during the year?

No. UTC is 3 h 30 min behind IRST all year.

IRST does not change its clocks. UTC does not change its clocks.

About IRST and UTC

IRST here means Iran Time, the clock in Tehran. Right now it is UTC+3:30. It has no daylight saving.

UTC here means Coordinated Universal Time, the clock in the world reference time. Right now it is UTC+0. It has no daylight saving.

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