Ulsan to Hong Kong Time Difference
Hong Kong is 1 hour behind Ulsan. When it is noon in Ulsan, it is 11:00 in Hong Kong.
Seoul (UTC+9) → Hong Kong (UTC+8)
🕐 Interactive Time Explorer
When it's 05:00 in Ulsan, it's 04:00 in Hong Kong
Drag the slider to see corresponding times in both cities
🤝 Best Meeting Times
Ulsan & Hong Kong✓ Perfect Match (7 hours)
◐ Extended Hours (2 hours)
✈️ Travel Information
Distance
2,076 km
Est. Flight Time
~3.4h
Time Difference
-1h
Work Hours Overlap
7h
Excellent
🟢 Good to Call Now
14:28
10:00 - 17:00
⏰ Quick Conversion
06:00
Ulsan
05:00
Hong Kong
09:00
Ulsan
08:00
Hong Kong
12:00
Ulsan
11:00
Hong Kong
15:00
Ulsan
14:00
Hong Kong
18:00
Ulsan
17:00
Hong Kong
21:00
Ulsan
20:00
Hong Kong
00:00
Ulsan
23:00
Hong Kong (-1)
03:00
Ulsan
02:00
Hong Kong
Frequently Asked Questions
How many hours is Ulsan ahead of Hong Kong?
Hong Kong is 1 hour behind Ulsan. When it is 12:00 noon in Ulsan, it is 11:00 in Hong Kong. Ulsan operates on Asia/Seoul (UTC+9), while Hong Kong uses Asia/Hong Kong (UTC+8).
What is the best time to call Hong Kong from Ulsan?
There are 8 hours of overlapping business time (9 AM–5 PM) between Ulsan and Hong Kong. The best window is 10:00–18:00 Ulsan time (09:00–17:00 in Hong Kong).
Does the Ulsan to Hong Kong time difference change throughout the year?
The time difference can shift by up to one hour when either city observes Daylight Saving Time (DST). DST transition dates differ between countries — typically March/April in the Northern Hemisphere and October in the Southern Hemisphere. Always verify the live difference above when scheduling important meetings near DST changeover dates.
Flying between Ulsan and Hong Kong
The distance between Ulsan and Hong Kong is approximately 2,076 km. A direct flight typically takes around 3.4 hours. Your arrival clock will show local Hong Kong time — use our Flight Time Calculator to predict exact arrival times.