Seoul to Usolye-Sibirskoye: time difference
Usolye-Sibirskoye is 1 h behind Seoul. Live clocks for both, the working hours they share, and how each one sits against your own time.
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Seoul 16:51 4:51 PM Usolye-Sibirskoye 15:51 3:51 PM You –:–
16:51 4:51 PM
Korean Standard Time · UTC+9
☀️ 06:36 · 🌙 18:04
15:51 3:51 PM
Irkutsk Standard Time · UTC+8
☀️ 07:22 · 🌙 18:24
·
−1 h
Usolye-Sibirskoye is 1 h behind Seoul.
When you, Seoul and Usolye-Sibirskoye 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
🇷🇺 Usolye-Sibirskoye
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 | 🇷🇺 Usolye-Sibirskoye |
|---|---|---|
| Local time | 16:51 | 15:51 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Korean Standard Time | Irkutsk Standard Time |
| UTC offset | UTC+9 | UTC+8 |
| Offset from Seoul | — | −1 h |
| IANA zone | Asia/Seoul | Asia/Irkutsk |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:36 | 07:22 |
| Sunset | 18:04 | 18:24 |
| Daylight | 11 h 29 min | 11 h 3 min |
| People on this clock | 9,509,458 | 73,507 |
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 Usolye-Sibirskoye: common questions
What is the time difference between Seoul and Usolye-Sibirskoye?
Usolye-Sibirskoye is 1 hour behind: it uses UTC+8, while Seoul is on UTC+9.
What time is it in Usolye-Sibirskoye when it is 9:00 AM in Seoul?
When it is 9:00 AM in Seoul, it is 8:00 AM in Usolye-Sibirskoye.
What time is it in Usolye-Sibirskoye when it is 6:00 PM in Seoul?
When it is 6:00 PM in Seoul, it is 5:00 PM in Usolye-Sibirskoye.
Is there a time when both Seoul and Usolye-Sibirskoye are at work?
Yes: from 10:00 AM to 6:00 PM in Seoul (9:00 AM to 5:00 PM in Usolye-Sibirskoye), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Usolye-Sibirskoye?
Until 1:00 AM in Seoul it is still the previous day in Usolye-Sibirskoye. The other way round, from 11:00 PM in Usolye-Sibirskoye it is already the next day in Seoul.
Is the time difference between Seoul and Usolye-Sibirskoye the same all year?
Yes. Neither Seoul nor Usolye-Sibirskoye switches to summer time, so the gap is always 1 hour.
