Time in Istanbul vs Semnan
Istanbul keeps UTC+3 (UTC+3) and Semnan keeps UTC+3:30 (UTC+3:30) today. Semnan is 0½ 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: 10:00–18:00 in Semnan (09:00–17:00 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 |
| Semnan—— | 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 Semnan
Best hours to call
09:00 in Istanbul
Inside working hours on both sides
10:00 in Semnan
10:00 in Istanbul
Inside working hours on both sides
11:00 in Semnan
11:00 in Istanbul
Inside working hours on both sides
12:00 in Semnan
12:00 in Istanbul
Inside working hours on both sides
13:00 in Semnan
Where daylight saving pulls them apart
Neither Istanbul nor Semnan changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Semnan of Istanbul?
Semnan is 0½ 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 Semnan?
Any hour in 09:00–17:00 Istanbul time is inside working hours in both cities.
Do Istanbul and Semnan change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.