Zhangjiagang to Seoul: time difference
Seoul is 1 h ahead of Zhangjiagang. 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.
Zhangjiagang 16:20 4:20 PM Seoul 17:20 5:20 PM You –:–
16:20 4:20 PM
China Standard Time · UTC+8
☀️ 06:01 · 🌙 17:27
17:20 5:20 PM
Korean Standard Time · UTC+9
☀️ 06:40 · 🌙 17:57
·
+1 h
Seoul is 1 h ahead of Zhangjiagang.
When you, Zhangjiagang 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
🇨🇳 Zhangjiagang
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 | 🇨🇳 Zhangjiagang | 🇰🇷 Seoul |
|---|---|---|
| Local time | 16:20 | 17:20 |
| Local date | Thursday, October 15, 2026 | Thursday, October 15, 2026 |
| Time zone | China Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Zhangjiagang | — | +1 h |
| IANA zone | Asia/Shanghai | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:01 | 06:40 |
| Sunset | 17:27 | 17:57 |
| Daylight | 11 h 26 min | 11 h 17 min |
| People on this clock | 1,432,044 | 9,509,458 |
Compare Zhangjiagang with another city
More comparisons with Zhangjiagang: the time zones next to it and the far side of the clock.
Big time differences
Zhangjiagang and Seoul: common questions
How far ahead of Zhangjiagang is Seoul?
Seoul is 1 hour ahead of Zhangjiagang: UTC+9 against UTC+8.
If it is 9:00 AM in Zhangjiagang, what time is it in Seoul?
At 9:00 AM in Zhangjiagang, clocks in Seoul show 10:00 AM.
What time is it in Seoul at the end of the working day in Zhangjiagang?
The working day in Zhangjiagang ends at 6:00 PM; in Seoul it is 7:00 PM at that moment.
When is a good time to call Seoul from Zhangjiagang?
Between 9:00 AM and 5:00 PM in Zhangjiagang – that is 10:00 AM to 6:00 PM in Seoul – both places are within working hours (9:00 AM–6:00 PM).
From what time in Zhangjiagang is it tomorrow in Seoul?
Once it is 11:00 PM in Zhangjiagang, the date in Seoul has already changed. Until 1:00 AM in Seoul, it is still the previous day in Zhangjiagang.
Does the time difference between Zhangjiagang and Seoul change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
