Tonghua to Seoul: time difference
Seoul is 1 h ahead of Tonghua. 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.
Tonghua 17:55 5:55 PM Seoul 18:55 6:55 PM You –:–
17:55 5:55 PM
China Standard Time · UTC+8
☀️ 05:54 · 🌙 16:50
18:55 6:55 PM
Korean Standard Time · UTC+9
☀️ 06:45 · 🌙 17:50
·
+1 h
Seoul is 1 h ahead of Tonghua.
When you, Tonghua 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
🇨🇳 Tonghua
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 | 🇨🇳 Tonghua | 🇰🇷 Seoul |
|---|---|---|
| Local time | 17:55 | 18:55 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | China Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Tonghua | — | +1 h |
| IANA zone | Asia/Shanghai | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:54 | 06:45 |
| Sunset | 16:50 | 17:50 |
| Daylight | 10 h 56 min | 11 h 5 min |
| People on this clock | 446,917 | 9,509,458 |
Compare Tonghua with another city
More comparisons with Tonghua: the time zones next to it and the far side of the clock.
Big time differences
Tonghua and Seoul: common questions
What is the time difference between Tonghua and Seoul?
Seoul is 1 hour ahead: it uses UTC+9, while Tonghua is on UTC+8.
What time is it in Seoul at the start of the working day in Tonghua?
The working day in Tonghua starts at 9:00 AM; in Seoul it is 10:00 AM at that moment.
If it is 6:00 PM in Tonghua, what time is it in Seoul?
At 6:00 PM in Tonghua, clocks in Seoul show 7:00 PM.
Is there a time when both Tonghua and Seoul are at work?
Yes: from 9:00 AM to 5:00 PM in Tonghua (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 Tonghua?
The new day starts in Seoul earlier: at 11:00 PM in Tonghua it is already midnight there. Until 1:00 AM in Seoul, Tonghua is still on the previous day.
Is the time difference between Tonghua and Seoul the same all year?
Yes. Neither Tonghua nor Seoul switches to summer time, so the gap is always 1 hour.
