Shanghai to Seoul: time difference
Seoul is 1 h ahead of Shanghai. 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.
Shanghai 11:40 11:40 AM Seoul 12:40 12:40 PM You –:–
11:40 11:40 AM
China Standard Time · UTC+8
☀️ 05:54 · 🌙 17:30
12:40 12:40 PM
Korean Standard Time · UTC+9
☀️ 06:36 · 🌙 18:04
·
+1 h
Seoul is 1 h ahead of Shanghai.
When you, Shanghai 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
🇨🇳 Shanghai
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 | 🇨🇳 Shanghai | 🇰🇷 Seoul |
|---|---|---|
| Local time | 11:40 | 12:40 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | China Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Shanghai | — | +1 h |
| IANA zone | Asia/Shanghai | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:54 | 06:36 |
| Sunset | 17:30 | 18:04 |
| Daylight | 11 h 36 min | 11 h 29 min |
| People on this clock | 24,870,895 | 9,509,458 |
Compare Shanghai with another city
More comparisons with Shanghai: the time zones next to it and the far side of the clock.
Big time differences
Shanghai and Seoul: common questions
What is the time difference between Shanghai and Seoul?
Seoul is 1 hour ahead: it uses UTC+9, while Shanghai is on UTC+8.
What time is it in Seoul when it is 9:00 AM in Shanghai?
When it is 9:00 AM in Shanghai, it is 10:00 AM in Seoul.
What time is it in Seoul when it is 6:00 PM in Shanghai?
When it is 6:00 PM in Shanghai, it is 7:00 PM in Seoul.
Is there a time when both Shanghai and Seoul are at work?
Yes: from 9:00 AM to 5:00 PM in Shanghai (10:00 AM to 6:00 PM in Seoul), the working days (9:00 AM–6:00 PM) overlap.
From what time in Shanghai is it tomorrow in Seoul?
Once it is 11:00 PM in Shanghai, the date in Seoul has already changed. Until 1:00 AM in Seoul, it is still the previous day in Shanghai.
Does the time gap between Shanghai and Seoul change during the year?
No, the clocks change neither in Shanghai nor in Seoul, so the gap is 1 hour all year round.
