Time in Hyesan vs Istanbul
Hyesan keeps KST (UTC+9) and Istanbul keeps UTC+3 (UTC+3) today. Istanbul is 6 hours behind Hyesan; 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: 09:00–12:00 in Istanbul (15:00–18:00 your time).
| City | 00:00 in Hyesan | 01:00 in Hyesan | 02:00 in Hyesan | 03:00 in Hyesan | 04:00 in Hyesan | 05:00 in Hyesan | 06:00 in Hyesan | 07:00 in Hyesan | 08:00 in Hyesan | 09:00 in Hyesan | 10:00 in Hyesan | 11:00 in Hyesan | 12:00 in Hyesan | 13:00 in Hyesan | 14:00 in Hyesan | 15:00 in Hyesan | 16:00 in Hyesan | 17:00 in Hyesan | 18:00 in Hyesan | 19:00 in Hyesan | 20:00 in Hyesan | 21:00 in Hyesan | 22:00 in Hyesan | 23:00 in Hyesan |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hyesan—— | 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 Hyesan and Istanbul
Best hours to call
15:00 in Hyesan
Inside working hours on both sides
09:00 in Istanbul
16:00 in Hyesan
Inside working hours on both sides
10:00 in Istanbul
17:00 in Hyesan
Inside working hours on both sides
11:00 in Istanbul
Where daylight saving pulls them apart
Neither Hyesan nor Istanbul changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Istanbul of Hyesan?
Istanbul is 6 hours behind Hyesan right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Hyesan and Istanbul?
Any hour in 15:00–18:00 Hyesan time is inside working hours in both cities.
Do Hyesan and Istanbul change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.