🇭🇰 Hong Kong, Hong Kong (China)
45
- Hong Kong Standard Time
- UTC+8
- Night
☀️ 06:21 · 🌙 17:57 · 11 h 36 min
Hong Kong to Seongnam: time difference
Seongnam is 1 h ahead of Hong Kong. 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.
Hong Kong 02:25 2:25 AM Seongnam 03:25 3:25 AM You –:–
02:25 2:25 AM
Hong Kong Standard Time · UTC+8
☀️ 06:21 · 🌙 17:57
03:25 3:25 AM
Korean Standard Time · UTC+9
☀️ 06:42 · 🌙 17:52
·
+1 h
Seongnam is 1 h ahead of Hong Kong.
When you, Hong Kong and Seongnam are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇭🇰 Hong Kong
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
🇰🇷 Seongnam
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 | 🇭🇰 Hong Kong | 🇰🇷 Seongnam |
|---|---|---|
| Local time | 02:25 | 03:25 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Hong Kong Standard Time | Korean Standard Time |
| UTC offset | UTC+8 | UTC+9 |
| Offset from Hong Kong | — | +1 h |
| IANA zone | Asia/Hong Kong | Asia/Seoul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:21 | 06:42 |
| Sunset | 17:57 | 17:52 |
| Daylight | 11 h 36 min | 11 h 10 min |
| People on this clock | 1,367,900 | 967,510 |
Compare Hong Kong with another city
More comparisons with Hong Kong: the time zones next to it and the far side of the clock.
Big time differences
Hong Kong and Seongnam: common questions
What is the time difference between Hong Kong and Seongnam?
Seongnam is 1 hour ahead: it uses UTC+9, while Hong Kong is on UTC+8.
What time is it in Seongnam at the start of the working day in Hong Kong?
The working day in Hong Kong starts at 9:00 AM; in Seongnam it is 10:00 AM at that moment.
What time is it in Seongnam when it is 6:00 PM in Hong Kong?
When it is 6:00 PM in Hong Kong, it is 7:00 PM in Seongnam.
Is there a time when both Hong Kong and Seongnam are at work?
Yes: from 9:00 AM to 5:00 PM in Hong Kong (10:00 AM to 6:00 PM in Seongnam), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Seongnam?
From 11:00 PM in Hong Kong it is already the next day in Seongnam. The other way round, until 1:00 AM in Seongnam it is still the previous day in Hong Kong.
Is the time difference between Hong Kong and Seongnam the same all year?
Yes. Neither Hong Kong nor Seongnam switches to summer time, so the gap is always 1 hour.
