Seoul to Ulaanbaatar: time difference
Ulaanbaatar is 1 h behind Seoul. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇲🇳 Ulaanbaatar, Mongolia
44
- Ulaanbaatar Standard Time
- UTC+8
- Daytime
☀️ 07:04 · 🌙 18:16 · 11 h 12 min
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Seoul 11:27 11:27 AM Ulaanbaatar 10:27 10:27 AM You –:–
11:27 11:27 AM
Korean Standard Time · UTC+9
☀️ 06:36 · 🌙 18:04
10:27 10:27 AM
Ulaanbaatar Standard Time · UTC+8
☀️ 07:04 · 🌙 18:16
·
−1 h
Ulaanbaatar is 1 h behind Seoul.
When you, Seoul and Ulaanbaatar 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
🇲🇳 Ulaanbaatar
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 | 🇲🇳 Ulaanbaatar |
|---|---|---|
| Local time | 11:27 | 10:27 |
| 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 | 1,401,200 |
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 Ulaanbaatar: common questions
How far behind Seoul is Ulaanbaatar?
Ulaanbaatar is 1 hour behind Seoul: UTC+8 against UTC+9.
What time is it in Ulaanbaatar when it is 9:00 AM in Seoul?
When it is 9:00 AM in Seoul, it is 8:00 AM in Ulaanbaatar.
If it is 6:00 PM in Seoul, what time is it in Ulaanbaatar?
At 6:00 PM in Seoul, clocks in Ulaanbaatar show 5:00 PM.
Is there a time when both Seoul and Ulaanbaatar are at work?
Yes: from 10:00 AM to 6:00 PM in Seoul (9:00 AM to 5:00 PM in Ulaanbaatar), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Ulaanbaatar?
Until 1:00 AM in Seoul it is still the previous day in Ulaanbaatar. The other way round, from 11:00 PM in Ulaanbaatar it is already the next day in Seoul.
Does the time gap between Seoul and Ulaanbaatar change during the year?
No, the clocks change neither in Seoul nor in Ulaanbaatar, so the gap is 1 hour all year round.
