IRST to KST converter

Iran Time (Tehran) to Korea Time (Seoul).

IRST3:37 AMSat 31 Oct 2026

→

KST9:07 AMSat 31 Oct 2026

KST is 5 h 30 min ahead of IRST.

Pick a time in IRST

⇄ KST to IRST

9:00 AM IRST = 2:30 PM KST same day

Best time to meet

The best time to meet is between 9:00 AM and 12:00 PM IRST, which is 2:30 PM to 5:30 PM KST. Both sides are then inside 9 AM to 5 PM.

IRST to KST time table

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

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

Quick answers

9:00 AM IRST = 2:30 PM KST
12:00 PM IRST = 5:30 PM KST
3:00 PM IRST = 8:30 PM KST
5:00 PM IRST = 10:30 PM KST
9:00 AM KST = 3:30 AM IRST
12:00 PM KST = 6:30 AM IRST
5:00 PM KST = 11:30 AM IRST

Does the gap change during the year?

No. KST is 5 h 30 min ahead of IRST all year.

IRST does not change its clocks. KST does not change its clocks.

About IRST and KST

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

KST here means Korea Time, the clock in Seoul. Right now it is UTC+9. It has no daylight saving.

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