Time in Osan vs Shanghai
Osan keeps KST (UTC+9) and Shanghai keeps CST (UTC+8) today. Shanghai is 1 hour 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: 09:00–17:00 in Shanghai (10:00–18:00 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 |
| Shanghai—— | 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 Shanghai
Best hours to call
10:00 in Osan
Inside working hours on both sides
09:00 in Shanghai
11:00 in Osan
Inside working hours on both sides
10:00 in Shanghai
12:00 in Osan
Inside working hours on both sides
11:00 in Shanghai
13:00 in Osan
Inside working hours on both sides
12:00 in Shanghai
Where daylight saving pulls them apart
Neither Osan nor Shanghai changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Shanghai of Osan?
Shanghai is 1 hour 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 Shanghai?
Any hour in 10:00–18:00 Osan time is inside working hours in both cities.
Do Osan and Shanghai change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.