Seoul to Haikou: time difference
Haikou 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 04:05 4:05 AM Haikou 03:05 3:05 AM You –:–
04:05 4:05 AM
Korean Standard Time · UTC+9
☀️ 06:43 · 🌙 17:53
03:05 3:05 AM
China Standard Time · UTC+8
☀️ 06:35 · 🌙 18:15
·
−1 h
Haikou is 1 h behind Seoul.
When you, Seoul and Haikou 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
🇨🇳 Haikou
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 | 🇨🇳 Haikou |
|---|---|---|
| Local time | 04:05 | 03:05 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 06:43 | 06:35 |
| Sunset | 17:53 | 18:15 |
| Daylight | 11 h 10 min | 11 h 39 min |
| People on this clock | 9,509,458 | 2,873,358 |
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 Haikou: common questions
What is the time difference between Seoul and Haikou?
Haikou 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 Haikou?
At 9:00 AM in Seoul, clocks in Haikou show 8:00 AM.
What time is it in Haikou at the end of the working day in Seoul?
The working day in Seoul ends at 6:00 PM; in Haikou it is 5:00 PM at that moment.
When do working hours in Seoul and in Haikou overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Seoul, which is 9:00 AM to 5:00 PM in Haikou.
When is it still the previous day in Haikou?
Until 1:00 AM in Seoul it is still the previous day in Haikou. The other way round, from 11:00 PM in Haikou it is already the next day in Seoul.
Is the time difference between Seoul and Haikou the same all year?
Yes. Neither Seoul nor Haikou switches to summer time, so the gap is always 1 hour.
