Tangshan to Seoul: time difference
Seoul is 1 h ahead of Tangshan. 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.
Tangshan 11:23 11:23 AM Seoul 12:23 12:23 PM You –:–
11:23 11:23 AM
China Standard Time · UTC+8
☀️ 06:15 · 🌙 17:33
12:23 12:23 PM
Korean Standard Time · UTC+9
☀️ 06:38 · 🌙 18:00
·
+1 h
Seoul is 1 h ahead of Tangshan.
When you, Tangshan 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
🇨🇳 Tangshan
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 | 🇨🇳 Tangshan | 🇰🇷 Seoul |
|---|---|---|
| Local time | 11:23 | 12:23 |
| Local date | Tuesday, October 13, 2026 | Tuesday, October 13, 2026 |
| Time zone | China Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Tangshan | — | +1 h |
| IANA zone | Asia/Shanghai | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:15 | 06:38 |
| Sunset | 17:33 | 18:00 |
| Daylight | 11 h 18 min | 11 h 22 min |
| People on this clock | 7,717,983 | 9,509,458 |
Compare Tangshan with another city
More comparisons with Tangshan: the time zones next to it and the far side of the clock.
Big time differences
Tangshan and Seoul: common questions
What is the time difference between Tangshan and Seoul?
Seoul is 1 hour ahead: it uses UTC+9, while Tangshan is on UTC+8.
What time is it in Seoul at the start of the working day in Tangshan?
The working day in Tangshan starts at 9:00 AM; in Seoul it is 10:00 AM at that moment.
What time is it in Seoul when it is 6:00 PM in Tangshan?
When it is 6:00 PM in Tangshan, it is 7:00 PM in Seoul.
Is there a time when both Tangshan and Seoul are at work?
Yes: from 9:00 AM to 5:00 PM in Tangshan (10:00 AM to 6:00 PM in Seoul), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Seoul?
From 11:00 PM in Tangshan it is already the next day in Seoul. The other way round, until 1:00 AM in Seoul it is still the previous day in Tangshan.
Does the time gap between Tangshan and Seoul change during the year?
No, the clocks change neither in Tangshan nor in Seoul, so the gap is 1 hour all year round.
