The short answer
Seoul is 5 hours 30 minutes ahead of Tehran.
Seoul☾
6:21:47pm
KST · UTC+09:00 · Sun, Oct 11
Tehran☀
12:51:47pm
+03:30 · UTC+03:30 · Sun, Oct 11
Read across to convert
Seoul
KST · UTC+09:00
Tehran
+03:30 · UTC+03:30
Click any row to pin that hour across both zones.
12amSun
6:30pmSat ·−1d
1am
7:30pmSat ·−1d
2am
8:30pmSat ·−1d
3am
9:30pmSat ·−1d
4am
10:30pmSat ·−1d
5am
11:30pmSat ·−1d
6am
12:30amSun
7am
1:30am
8am
2:30am
9am
WORK3:30am
10am
WORK4:30am
11am
WORK5:30am
12pm
WORK6:30am
1pm
WORK7:30am
2pm
WORK8:30am
3pm
WORK9:30am
WORK4pm
WORK10:30am
WORK5pm
11:30am
WORKNOW
6pm
12:30pm
WORK7pm
1:30pm
WORK8pm
2:30pm
WORK9pm
3:30pm
WORK10pm
4:30pm
WORK11pm
5:30pm
daylightnightworking hoursoverlap
Best time to meet=
Best for a call
Seoul
3pm–5pm
Tehran
9:30am–11:30am
Popular conversions
Quick reference.
9amSeoul=3:30amTehran
12pmSeoul=6:30amTehran
3pmSeoul=9:30amTehran
5pmSeoul=11:30amTehran
9pmSeoul=3:30pmTehran
In context
What each side covers.
Related converters
Other popular pairs.
Pacific Time
2:21am
India Standard Time
2:51pm
Pacific Time to India12 hours 30 minutes behind
Eastern Daylight Time
5:21am
Central European Time
11:21am
Eastern Time to Central Europe6 hours behind
India Standard Time
2:51pm
Eastern Daylight Time
5:21am
India to Eastern Time9 hours 30 minutes ahead
British Summer Time
10:21am
India Standard Time
2:51pm
London to India4 hours 30 minutes behind
Pacific Daylight Time
2:21am
Eastern Daylight Time
5:21am
Pacific to Eastern Time3 hours behind
Central European Time
11:21am
India Standard Time
2:51pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Seoul and Tehran. Can't find what you need? Email [email protected].
- What is the time difference between Seoul and Tehran?
- Seoul is 5 hours 30 minutes ahead of Tehran right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 9am in Seoul, what time is it in Tehran?
- 9am in Seoul is 3:30am in Tehran. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
- What's the best time for a call between Seoul and Tehran?
- 3pm–5pm in Seoul lines up with 9:30am–11:30am in Tehran — both sides are inside a 9-to-5 working day.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — KST and +03:30 — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.