Chang-hua to Seoul: time difference
Seoul is 1 h ahead of Chang-hua. 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.
Chang-hua 03:57 3:57 AM Seoul 04:57 4:57 AM You –:–
03:57 3:57 AM
Taipei Standard Time · UTC+8
☀️ 05:57 · 🌙 17:29
04:57 4:57 AM
Korean Standard Time · UTC+9
☀️ 06:44 · 🌙 17:52
·
+1 h
Seoul is 1 h ahead of Chang-hua.
When you, Chang-hua 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
🇹🇼 Chang-hua
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 | 🇹🇼 Chang-hua | 🇰🇷 Seoul |
|---|---|---|
| Local time | 03:57 | 04:57 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Taipei Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Chang-hua | — | +1 h |
| IANA zone | Asia/Taipei | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 05:57 | 06:44 |
| Sunset | 17:29 | 17:52 |
| Daylight | 11 h 32 min | 11 h 8 min |
| People on this clock | 226,564 | 9,509,458 |
Compare Chang-hua with another city
More comparisons with Chang-hua: the time zones next to it and the far side of the clock.
Big time differences
Chang-hua and Seoul: common questions
What is the time difference between Chang-hua and Seoul?
Seoul is 1 hour ahead: it uses UTC+9, while Chang-hua is on UTC+8.
If it is 9:00 AM in Chang-hua, what time is it in Seoul?
At 9:00 AM in Chang-hua, clocks in Seoul show 10:00 AM.
If it is 6:00 PM in Chang-hua, what time is it in Seoul?
At 6:00 PM in Chang-hua, clocks in Seoul show 7:00 PM.
Is there a time when both Chang-hua and Seoul are at work?
Yes: from 9:00 AM to 5:00 PM in Chang-hua (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 Chang-hua?
The new day starts in Seoul earlier: at 11:00 PM in Chang-hua it is already midnight there. Until 1:00 AM in Seoul, Chang-hua is still on the previous day.
Does the time gap between Chang-hua and Seoul change during the year?
No, the clocks change neither in Chang-hua nor in Seoul, so the gap is 1 hour all year round.
