Seoul to Mongolia: time difference
Mongolia is 1 h behind Seoul. 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.
Seoul 10:37 10:37 AM Mongolia 09:37 9:37 AM You –:–
10:37 10:37 AM
Korean Standard Time · UTC+9
☀️ 06:36 · 🌙 18:04
09:37 9:37 AM
Ulaanbaatar Standard Time · UTC+8
☀️ 07:04 · 🌙 18:16
·
−1 h
Mongolia is 1 h behind Seoul.
When you, Seoul and Mongolia are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇰🇷 Seoul
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
🇲🇳 Mongolia
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 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇰🇷 Seoul | 🇲🇳 Mongolia |
|---|---|---|
| Local time | 10:37 | 09:37 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Korean Standard Time | Ulaanbaatar Standard Time |
| UTC offset | UTC+9 | UTC+8 |
| Offset from Seoul | — | −1 h |
| IANA zone | Asia/Seoul | Asia/Ulaanbaatar |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:36 | 07:04 |
| Sunset | 18:04 | 18:16 |
| Daylight | 11 h 29 min | 11 h 12 min |
| People on this clock | 9,509,458 | 3,409,939 |
Compare Seoul with another city
More comparisons with Seoul: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seoul and Mongolia: common questions
What is the time difference between Seoul and Mongolia?
Mongolia is 1 hour behind: it uses UTC+8, while Seoul is on UTC+9.
What time is it in Mongolia when it is 9:00 AM in Seoul?
When it is 9:00 AM in Seoul, it is 8:00 AM in Mongolia.
What time is it in Mongolia when it is 6:00 PM in Seoul?
When it is 6:00 PM in Seoul, it is 5:00 PM in Mongolia.
Is there a time when both Seoul and Mongolia are at work?
Yes: from 10:00 AM to 6:00 PM in Seoul (9:00 AM to 5:00 PM in Mongolia), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Mongolia compared with Seoul?
The new day starts in Mongolia later: until 1:00 AM in Seoul, it is still the previous day there. From 11:00 PM in Mongolia, Seoul is already on the next day.
Is the time difference between Seoul and Mongolia the same all year?
Yes. Neither Seoul nor Mongolia switches to summer time, so the gap is always 1 hour.
