Time in Istanbul vs Ōtsu
Istanbul keeps UTC+3 (UTC+3) and Ōtsu keeps JST (UTC+9) today. Ōtsu is 6 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: 15:00–18:00 in Ōtsu (09:00–12:00 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 |
| Ōtsu—— | 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 Ōtsu
Best hours to call
09:00 in Istanbul
Inside working hours on both sides
15:00 in Ōtsu
10:00 in Istanbul
Inside working hours on both sides
16:00 in Ōtsu
11:00 in Istanbul
Inside working hours on both sides
17:00 in Ōtsu
Where daylight saving pulls them apart
Neither Istanbul nor Ōtsu changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Ōtsu of Istanbul?
Ōtsu is 6 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 Ōtsu?
Any hour in 09:00–12:00 Istanbul time is inside working hours in both cities.
Do Istanbul and Ōtsu change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.