Seoul to Tangshan: time difference
Tangshan is 1 h behind Seoul. 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.
Seoul 13:18 1:18 PM Tangshan 12:18 12:18 PM You –:–
13:18 1:18 PM
Korean Standard Time · UTC+9
☀️ 06:38 · 🌙 18:00
12:18 12:18 PM
China Standard Time · UTC+8
☀️ 06:15 · 🌙 17:33
·
−1 h
Tangshan is 1 h behind Seoul.
When you, Seoul and Tangshan 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
🇨🇳 Tangshan
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 | 🇨🇳 Tangshan |
|---|---|---|
| Local time | 13:18 | 12:18 |
| Local date | Tuesday, October 13, 2026 | Tuesday, October 13, 2026 |
| Time zone | Korean Standard Time | China Standard Time |
| UTC offset | UTC+9 | UTC+8 |
| Offset from Seoul | — | −1 h |
| IANA zone | Asia/Seoul | Asia/Shanghai |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:38 | 06:15 |
| Sunset | 18:00 | 17:33 |
| Daylight | 11 h 22 min | 11 h 18 min |
| People on this clock | 9,509,458 | 7,717,983 |
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 Tangshan: common questions
What is the time difference between Seoul and Tangshan?
Tangshan is 1 hour behind: it uses UTC+8, while Seoul is on UTC+9.
If it is 9:00 AM in Seoul, what time is it in Tangshan?
At 9:00 AM in Seoul, clocks in Tangshan show 8:00 AM.
What time is it in Tangshan when it is 6:00 PM in Seoul?
When it is 6:00 PM in Seoul, it is 5:00 PM in Tangshan.
Is there a time when both Seoul and Tangshan are at work?
Yes: from 10:00 AM to 6:00 PM in Seoul (9:00 AM to 5:00 PM in Tangshan), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Seoul is it still yesterday in Tangshan?
Before 1:00 AM in Seoul, the date in Tangshan has not changed yet. From 11:00 PM in Tangshan, it is already the next day in Seoul.
Is the time difference between Seoul and Tangshan the same all year?
Yes. Neither Seoul nor Tangshan switches to summer time, so the gap is always 1 hour.
