Time in Osan vs Mumbai
Osan keeps KST (UTC+9) and Mumbai keeps IST (UTC+5:30) today. Mumbai is 3½ hours behind Osan; 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: 09:00–15:00 in Mumbai (12:00–18:00 your time).
| City | 00:00 in Osan | 01:00 in Osan | 02:00 in Osan | 03:00 in Osan | 04:00 in Osan | 05:00 in Osan | 06:00 in Osan | 07:00 in Osan | 08:00 in Osan | 09:00 in Osan | 10:00 in Osan | 11:00 in Osan | 12:00 in Osan | 13:00 in Osan | 14:00 in Osan | 15:00 in Osan | 16:00 in Osan | 17:00 in Osan | 18:00 in Osan | 19:00 in Osan | 20:00 in Osan | 21:00 in Osan | 22:00 in Osan | 23:00 in Osan |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Osan—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Mumbai—— | 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 Osan and Mumbai
Best hours to call
12:00 in Osan
Inside working hours on both sides
09:00 in Mumbai
13:00 in Osan
Inside working hours on both sides
10:00 in Mumbai
14:00 in Osan
Inside working hours on both sides
11:00 in Mumbai
15:00 in Osan
Inside working hours on both sides
12:00 in Mumbai
Where daylight saving pulls them apart
Neither Osan nor Mumbai changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Mumbai of Osan?
Mumbai is 3½ hours behind Osan right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Osan and Mumbai?
Any hour in 12:00–18:00 Osan time is inside working hours in both cities.
Do Osan and Mumbai change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.