Time in Seoul vs Tehran
Seoul keeps KST (UTC+9) and Tehran keeps UTC+3:30 (UTC+3:30) today. Tehran is 5½ hours behind Seoul; the rows below read both clocks live.
The working day, side by side
Hours shaded in both rows are inside working hours in both cities: 09:00–13:00 in Tehran (14:00–18:00 your time).
| City | 00:00 in Seoul | 01:00 in Seoul | 02:00 in Seoul | 03:00 in Seoul | 04:00 in Seoul | 05:00 in Seoul | 06:00 in Seoul | 07:00 in Seoul | 08:00 in Seoul | 09:00 in Seoul | 10:00 in Seoul | 11:00 in Seoul | 12:00 in Seoul | 13:00 in Seoul | 14:00 in Seoul | 15:00 in Seoul | 16:00 in Seoul | 17:00 in Seoul | 18:00 in Seoul | 19:00 in Seoul | 20:00 in Seoul | 21:00 in Seoul | 22:00 in Seoul | 23:00 in Seoul |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Seoul—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Tehran—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
- Working hours
- Shoulder
- Night
- Overlap
Do more with Seoul and Tehran
Best hours to call
14:00 in Seoul
Inside working hours on both sides
09:00 in Tehran
15:00 in Seoul
Inside working hours on both sides
10:00 in Tehran
16:00 in Seoul
Inside working hours on both sides
11:00 in Tehran
17:00 in Seoul
Inside working hours on both sides
12:00 in Tehran
Where daylight saving pulls them apart
Neither Seoul nor Tehran changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Tehran of Seoul?
Tehran is 5½ hours behind Seoul right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Seoul and Tehran?
Any hour in 14:00–18:00 Seoul time is inside working hours in both cities.
Do Seoul and Tehran change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.