Istanbul and Seoul time difference

Seoul is 6 hours ahead of Istanbul.

Plan a meeting in Istanbul and SeoulOpens the free planner with both cities: drag the bands to any day and time, add more cities, and share the result.

Work hours overlap for 2 hours: 09:00–11:00 in Istanbul, which is 15:00–17:00 in Seoul.

Hour by hour

On a usual work day (October 14, 2026). Green is 09:00–17:00 work time, dark is night (21:00–07:00).

Istanbul	Seoul
00:00, Night	06:00, Night
01:00, Night	07:00, Off hours
02:00, Night	08:00, Off hours
03:00, Night	09:00, Work hours
04:00, Night	10:00, Work hours
05:00, Night	11:00, Work hours
06:00, Night	12:00, Work hours
07:00, Off hours	13:00, Work hours
08:00, Off hours	14:00, Work hours
09:00, Work hours	15:00, Work hours
10:00, Work hours	16:00, Work hours
11:00, Work hours	17:00, Off hours
12:00, Work hours	18:00, Off hours
13:00, Work hours	19:00, Off hours
14:00, Work hours	20:00, Off hours
15:00, Work hours	21:00, Night
16:00, Work hours	22:00, Night
17:00, Off hours	23:00, Night
18:00, Off hours	00:00next day, Night
19:00, Off hours	01:00next day, Night
20:00, Off hours	02:00next day, Night
21:00, Night	03:00next day, Night
22:00, Night	04:00next day, Night
23:00, Night	05:00next day, Night

Through the year

Dates	Difference
October 8, 2026–October 7, 2027	Seoul is 6 hours ahead of Istanbul

Clock changes

Istanbul does not change its clocks.

Seoul does not change its clocks.

Questions

What time is it in Seoul when it is 09:00 in Istanbul?

On a usual day it is 15:00 in Seoul.

Do Istanbul and Seoul change their clocks on the same day?

Neither changes its clocks, so the difference stays the same all year.