Time in Istanbul vs Dumai
Istanbul keeps UTC+3 (UTC+3) and Dumai keeps WIB (UTC+7) today. Dumai is 4 hours ahead of Istanbul; 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: 13:00–18:00 in Dumai (09:00–14:00 your time).
| City | 00:00 in Istanbul | 01:00 in Istanbul | 02:00 in Istanbul | 03:00 in Istanbul | 04:00 in Istanbul | 05:00 in Istanbul | 06:00 in Istanbul | 07:00 in Istanbul | 08:00 in Istanbul | 09:00 in Istanbul | 10:00 in Istanbul | 11:00 in Istanbul | 12:00 in Istanbul | 13:00 in Istanbul | 14:00 in Istanbul | 15:00 in Istanbul | 16:00 in Istanbul | 17:00 in Istanbul | 18:00 in Istanbul | 19:00 in Istanbul | 20:00 in Istanbul | 21:00 in Istanbul | 22:00 in Istanbul | 23:00 in Istanbul |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Dumai—— | 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 Istanbul and Dumai
Best hours to call
09:00 in Istanbul
Inside working hours on both sides
13:00 in Dumai
10:00 in Istanbul
Inside working hours on both sides
14:00 in Dumai
11:00 in Istanbul
Inside working hours on both sides
15:00 in Dumai
12:00 in Istanbul
Inside working hours on both sides
16:00 in Dumai
Where daylight saving pulls them apart
Neither Istanbul nor Dumai changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Dumai of Istanbul?
Dumai is 4 hours ahead of Istanbul right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Istanbul and Dumai?
Any hour in 09:00–14:00 Istanbul time is inside working hours in both cities.
Do Istanbul and Dumai change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.