GST to IRST converter

Gulf Time (Dubai, Abu Dhabi, Muscat) to Iran Time (Tehran).

GST4:07 AMSat 31 Oct 2026

→

IRST3:37 AMSat 31 Oct 2026

IRST is 30 min behind GST.

Pick a time in GST

⇄ IRST to GST

9:00 AM GST = 8:30 AM IRST same day

Best time to meet

The best time to meet is between 10:00 AM and 5:00 PM GST, which is 9:30 AM to 4:30 PM IRST. Both sides are then inside 9 AM to 5 PM.

GST to IRST time table

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

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

Quick answers

9:00 AM GST = 8:30 AM IRST
12:00 PM GST = 11:30 AM IRST
3:00 PM GST = 2:30 PM IRST
5:00 PM GST = 4:30 PM IRST
9:00 AM IRST = 9:30 AM GST
12:00 PM IRST = 12:30 PM GST
5:00 PM IRST = 5:30 PM GST

Does the gap change during the year?

No. IRST is 30 min behind GST all year.

GST does not change its clocks. IRST does not change its clocks.

About GST and IRST

GST here means Gulf Time, the clock in Dubai, Abu Dhabi, Muscat. Right now it is UTC+4. It has no daylight saving.

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

Every city on your wrist

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