Ulan Ude to Seoul: time difference
Seoul is 1 h ahead of Ulan Ude. 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.
Ulan Ude 11:22 11:22 AM Seoul 12:22 12:22 PM You –:–
11:22 11:22 AM
Irkutsk Standard Time · UTC+8
☀️ 07:05 · 🌙 18:10
12:22 12:22 PM
Korean Standard Time · UTC+9
☀️ 06:36 · 🌙 18:04
·
+1 h
Seoul is 1 h ahead of Ulan Ude.
When you, Ulan Ude and Seoul are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇷🇺 Ulan Ude
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
🇰🇷 Seoul
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇷🇺 Ulan Ude | 🇰🇷 Seoul |
|---|---|---|
| Local time | 11:22 | 12:22 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Irkutsk Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Ulan Ude | — | +1 h |
| IANA zone | Asia/Irkutsk | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:05 | 06:36 |
| Sunset | 18:10 | 18:04 |
| Daylight | 11 h 5 min | 11 h 29 min |
| People on this clock | 436,138 | 9,509,458 |
Compare Ulan Ude with another city
More comparisons with Ulan Ude: the time zones next to it and the far side of the clock.
Big time differences
Ulan Ude and Seoul: common questions
How far ahead of Ulan Ude is Seoul?
Seoul is 1 hour ahead of Ulan Ude: UTC+9 against UTC+8.
If it is 9:00 AM in Ulan Ude, what time is it in Seoul?
At 9:00 AM in Ulan Ude, clocks in Seoul show 10:00 AM.
If it is 6:00 PM in Ulan Ude, what time is it in Seoul?
At 6:00 PM in Ulan Ude, clocks in Seoul show 7:00 PM.
Is there a time when both Ulan Ude and Seoul are at work?
Yes: from 9:00 AM to 5:00 PM in Ulan Ude (10:00 AM to 6:00 PM in Seoul), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Seoul compared with Ulan Ude?
The new day starts in Seoul earlier: at 11:00 PM in Ulan Ude it is already midnight there. Until 1:00 AM in Seoul, Ulan Ude is still on the previous day.
Does the time gap between Ulan Ude and Seoul change during the year?
No, the clocks change neither in Ulan Ude nor in Seoul, so the gap is 1 hour all year round.
