Time in Tongzhou vs Istanbul
Tongzhou keeps CST (UTC+8) and Istanbul keeps UTC+3 (UTC+3) today. Istanbul is 5 hours behind Tongzhou; 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 Istanbul (14:00–18:00 your time).
| City | 00:00 in Tongzhou | 01:00 in Tongzhou | 02:00 in Tongzhou | 03:00 in Tongzhou | 04:00 in Tongzhou | 05:00 in Tongzhou | 06:00 in Tongzhou | 07:00 in Tongzhou | 08:00 in Tongzhou | 09:00 in Tongzhou | 10:00 in Tongzhou | 11:00 in Tongzhou | 12:00 in Tongzhou | 13:00 in Tongzhou | 14:00 in Tongzhou | 15:00 in Tongzhou | 16:00 in Tongzhou | 17:00 in Tongzhou | 18:00 in Tongzhou | 19:00 in Tongzhou | 20:00 in Tongzhou | 21:00 in Tongzhou | 22:00 in Tongzhou | 23:00 in Tongzhou |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tongzhou—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Istanbul—— | 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 Tongzhou and Istanbul
Best hours to call
14:00 in Tongzhou
Inside working hours on both sides
09:00 in Istanbul
15:00 in Tongzhou
Inside working hours on both sides
10:00 in Istanbul
16:00 in Tongzhou
Inside working hours on both sides
11:00 in Istanbul
17:00 in Tongzhou
Inside working hours on both sides
12:00 in Istanbul
Where daylight saving pulls them apart
Neither Tongzhou nor Istanbul changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Istanbul of Tongzhou?
Istanbul is 5 hours behind Tongzhou right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Tongzhou and Istanbul?
Any hour in 14:00–18:00 Tongzhou time is inside working hours in both cities.
Do Tongzhou and Istanbul change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.