Mexico City to Ulsan: time difference
Ulsan is 15 h ahead of Mexico City. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Mexico City 13:06 1:06 PM Ulsan 04:06 4:06 AM You –:–
13:06 1:06 PM
Central Standard Time · UTC-6
☀️ 06:32 · 🌙 18:13
04:06 4:06 AM
Korean Standard Time · UTC+9
☀️ 06:32 · 🌙 17:46
·
+15 h
Ulsan is 15 h ahead of Mexico City.
When you, Mexico City and Ulsan are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇲🇽 Mexico City
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇰🇷 Ulsan
15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM
📍 Your time
- Asleep
- Early
- Working hours
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Time zones side by side
| Detail | 🇲🇽 Mexico City | 🇰🇷 Ulsan |
|---|---|---|
| Local time | 13:06 | 04:06 |
| Local date | Saturday, October 17, 2026 | Sunday, October 18, 2026 |
| Time zone | Central Standard Time | Korean Standard Time |
| UTC offset | UTC-6 | UTC+9 |
| Offset from Mexico City | — | +15 h |
| IANA zone | America/Mexico City | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:32 | 06:32 |
| Sunset | 18:13 | 17:46 |
| Daylight | 11 h 41 min | 11 h 14 min |
| People on this clock | 9,209,944 | 1,129,827 |
Compare Mexico City with another city
More comparisons with Mexico City: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Mexico City and Ulsan: common questions
What is the time difference between Mexico City and Ulsan?
Ulsan is 15 hours ahead: it uses UTC+9, while Mexico City is on UTC−6.
What time is it in Ulsan at the start of the working day in Mexico City?
The working day in Mexico City starts at 9:00 AM; in Ulsan it is 12:00 AM (the next day) at that moment.
If it is 6:00 PM in Mexico City, what time is it in Ulsan?
At 6:00 PM in Mexico City, clocks in Ulsan show 9:00 AM (the next day).
When is a good time to call Ulsan from Mexico City?
Working hours (9:00 AM–6:00 PM) in Mexico City and in Ulsan do not overlap. At 9:00 AM in Mexico City it is 12:00 AM (the next day) in Ulsan; when the working day starts in Ulsan, it is 6:00 PM (the previous day) in Mexico City.
When does the date change in Ulsan compared with Mexico City?
The new day starts in Ulsan earlier: at 9:00 AM in Mexico City it is already midnight there. Until 3:00 PM in Ulsan, Mexico City is still on the previous day.
Is the time difference between Mexico City and Ulsan the same all year?
Yes. Neither Mexico City nor Ulsan switches to summer time, so the gap is always 15 hours.
