Seongnam to Hong Kong: time difference
Hong Kong is 1 h behind Seongnam. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇭🇰 Hong Kong, Hong Kong (China)
31
- Hong Kong Standard Time
- UTC+8
- Night
☀️ 06:21 · 🌙 17:57 · 11 h 36 min
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Seongnam 01:44 1:44 AM Hong Kong 00:44 12:44 AM You –:–
01:44 1:44 AM
Korean Standard Time · UTC+9
☀️ 06:42 · 🌙 17:52
00:44 12:44 AM
Hong Kong Standard Time · UTC+8
☀️ 06:21 · 🌙 17:57
·
−1 h
Hong Kong is 1 h behind Seongnam.
When you, Seongnam and Hong Kong are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇰🇷 Seongnam
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
🇭🇰 Hong Kong
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 | 🇰🇷 Seongnam | 🇭🇰 Hong Kong |
|---|---|---|
| Local time | 01:44 | 00:44 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Korean Standard Time | Hong Kong Standard Time |
| UTC offset | UTC+9 | UTC+8 |
| Offset from Seongnam | — | −1 h |
| IANA zone | Asia/Seoul | Asia/Hong Kong |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:42 | 06:21 |
| Sunset | 17:52 | 17:57 |
| Daylight | 11 h 10 min | 11 h 36 min |
| People on this clock | 967,510 | 1,367,900 |
Compare Seongnam with another city
More comparisons with Seongnam: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Seongnam and Hong Kong: common questions
What is the time difference between Seongnam and Hong Kong?
Hong Kong is 1 hour behind: it uses UTC+8, while Seongnam is on UTC+9.
What time is it in Hong Kong at the start of the working day in Seongnam?
The working day in Seongnam starts at 9:00 AM; in Hong Kong it is 8:00 AM at that moment.
What time is it in Hong Kong at the end of the working day in Seongnam?
The working day in Seongnam ends at 6:00 PM; in Hong Kong it is 5:00 PM at that moment.
When do working hours in Seongnam and in Hong Kong overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Seongnam, which is 9:00 AM to 5:00 PM in Hong Kong.
When does the date change in Hong Kong compared with Seongnam?
The new day starts in Hong Kong later: until 1:00 AM in Seongnam, it is still the previous day there. From 11:00 PM in Hong Kong, Seongnam is already on the next day.
Does the time difference between Seongnam and Hong Kong change?
No. Neither place uses daylight saving time, so the difference stays 1 hour all year.
