Time in Istanbul vs Lanzhou
Istanbul keeps UTC+3 (UTC+3) and Lanzhou keeps CST (UTC+8) today. Lanzhou is 5 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: 14:00–18:00 in Lanzhou (09:00–13:00 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 |
| Lanzhou—— | 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 Lanzhou
Best hours to call
09:00 in Istanbul
Inside working hours on both sides
14:00 in Lanzhou
10:00 in Istanbul
Inside working hours on both sides
15:00 in Lanzhou
11:00 in Istanbul
Inside working hours on both sides
16:00 in Lanzhou
12:00 in Istanbul
Inside working hours on both sides
17:00 in Lanzhou
Where daylight saving pulls them apart
Neither Istanbul nor Lanzhou changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Lanzhou of Istanbul?
Lanzhou is 5 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 Lanzhou?
Any hour in 09:00–13:00 Istanbul time is inside working hours in both cities.
Do Istanbul and Lanzhou change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.