Haikou to Seoul: time difference
Seoul is 1 h ahead of Haikou. 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.
Haikou 02:12 2:12 AM Seoul 03:12 3:12 AM You –:–
02:12 2:12 AM
China Standard Time · UTC+8
☀️ 06:35 · 🌙 18:15
03:12 3:12 AM
Korean Standard Time · UTC+9
☀️ 06:43 · 🌙 17:53
·
+1 h
Seoul is 1 h ahead of Haikou.
When you, Haikou 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
🇨🇳 Haikou
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 | 🇨🇳 Haikou | 🇰🇷 Seoul |
|---|---|---|
| Local time | 02:12 | 03:12 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | China Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Haikou | — | +1 h |
| IANA zone | Asia/Shanghai | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:35 | 06:43 |
| Sunset | 18:15 | 17:53 |
| Daylight | 11 h 39 min | 11 h 10 min |
| People on this clock | 2,873,358 | 9,509,458 |
Compare Haikou with another city
More comparisons with Haikou: the time zones next to it and the far side of the clock.
Big time differences
Haikou and Seoul: common questions
How many hours ahead of Haikou is Seoul?
The clocks in Seoul are 1 hour ahead of those in Haikou (UTC+9 and UTC+8).
What time is it in Seoul at the start of the working day in Haikou?
The working day in Haikou starts at 9:00 AM; in Seoul it is 10:00 AM at that moment.
What time is it in Seoul when it is 6:00 PM in Haikou?
When it is 6:00 PM in Haikou, it is 7:00 PM in Seoul.
When is a good time to call Seoul from Haikou?
Between 9:00 AM and 5:00 PM in Haikou – that is 10:00 AM to 6:00 PM in Seoul – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Seoul?
From 11:00 PM in Haikou it is already the next day in Seoul. The other way round, until 1:00 AM in Seoul it is still the previous day in Haikou.
Does the time gap between Haikou and Seoul change during the year?
No, the clocks change neither in Haikou nor in Seoul, so the gap is 1 hour all year round.
