Time in Ulsan vs Mexico City
Ulsan keeps KST (UTC+9) and Mexico City keeps CST (UTC−6) today. Mexico City is 15 hours behind Ulsan; the rows below read both clocks live.
The working day, side by side
The working days do not meet. there is no working-hour overlap with Mexico City — the nearest workable window is 08:00–09:00 your time (17:00 there).
| City | 00:00 in Ulsan | 01:00 in Ulsan | 02:00 in Ulsan | 03:00 in Ulsan | 04:00 in Ulsan | 05:00 in Ulsan | 06:00 in Ulsan | 07:00 in Ulsan | 08:00 in Ulsan | 09:00 in Ulsan | 10:00 in Ulsan | 11:00 in Ulsan | 12:00 in Ulsan | 13:00 in Ulsan | 14:00 in Ulsan | 15:00 in Ulsan | 16:00 in Ulsan | 17:00 in Ulsan | 18:00 in Ulsan | 19:00 in Ulsan | 20:00 in Ulsan | 21:00 in Ulsan | 22:00 in Ulsan | 23:00 in Ulsan |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ulsan—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Mexico City—— | 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 Ulsan and Mexico City
Best hours to call
there is no working-hour overlap with Mexico City — the nearest workable window is 08:00–09:00 your time (17:00 there).
Where daylight saving pulls them apart
Neither Ulsan nor Mexico City changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Mexico City of Ulsan?
Mexico City is 15 hours behind Ulsan right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Ulsan and Mexico City?
There is no hour inside working hours in both cities. 08:00–09:00 your time (17:00 there) is the cheapest compromise, and one side is taking a shoulder hour.
Do Ulsan and Mexico City change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.