Time difference between Hong Kong and Seoul
Seoul is 1 hour ahead of Hong Kong. When it's 9:00 in Hong Kong, it's 10:00 in Seoul.
Seoul is 1 hour ahead of Hong Kong.
On Saturday, 3 October 2026, 09:00 in Hong Kong is 10:00 in Seoul. Hong Kong is UTC+8; Seoul is UTC+9.
The gap through 2026
It stays 1 hour all year — neither city changes its clocks against the other.
Hong Kong to Seoul, hour by hour
On Monday 5 October.
| Hong Kong | Seoul |
|---|---|
| 07:00 Early morning | 08:00 Early morning |
| 08:00 Early morning | 09:00 Working hours |
| 09:00 Working hours | 10:00 Working hours |
| 10:00 Working hours | 11:00 Working hours |
| 11:00 Working hours | 12:00 Working hours |
| 12:00 Working hours | 13:00 Working hours |
| 13:00 Working hours | 14:00 Working hours |
| 14:00 Working hours | 15:00 Working hours |
| 15:00 Working hours | 16:00 Working hours |
| 16:00 Working hours | 17:00 Evening |
| 17:00 Evening | 18:00 Evening |
| 18:00 Evening | 19:00 Evening |
| 19:00 Evening | 20:00 Evening |
| 20:00 Evening | 21:00 Evening |
| 21:00 Evening | 22:00 Sleeping hours |
| 22:00 Sleeping hours | 23:00 Sleeping hours |
Daylight saving in 2026
Neither Hong Kong nor Seoul changes its clocks, so the difference is the same all year.
Best times for a call
Working hours (09:00–17:00) overlap for 7 hours: 09:00–16:00 in Hong Kong, which is 10:00–17:00 in Seoul.
- Hong Kong 09:00Working hoursSeoul 10:00Working hours
- Hong Kong 10:00Working hoursSeoul 11:00Working hours
- Hong Kong 11:00Working hoursSeoul 12:00Working hours
More time differences for Hong Kong and Seoul
- New York and Seoul
- Los Angeles and Seoul
- Chicago and Seoul
- London and Seoul
- Paris and Seoul
- Berlin and Seoul
- New York and Hong Kong
- Los Angeles and Hong Kong
- Chicago and Hong Kong
- London and Hong Kong
- Paris and Hong Kong
- Berlin and Hong Kong
- Denver and Hong Kong
- Denver and Seoul
- Toronto and Hong Kong
- Toronto and Seoul
- Vancouver and Hong Kong
- Vancouver and Seoul
- Mexico City and Hong Kong
- Mexico City and Seoul
- São Paulo and Hong Kong
- São Paulo and Seoul
- Buenos Aires and Hong Kong
- Buenos Aires and Seoul
- Bogotá and Hong Kong
- Bogotá and Seoul
- Dublin and Hong Kong
- Dublin and Seoul
- Lisbon and Hong Kong
- Lisbon and Seoul
- Madrid and Hong Kong
- Madrid and Seoul
How the time difference calculator works
The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.
Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.
Examples
- London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
- Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.
Good for
- Knowing when a colleague's day starts
- Setting expectations for replies across time zones
- Planning travel and jet lag
Frequently asked questions
- What time is it in Seoul when it's 9 AM in Hong Kong?
- 10:00 AM — as of 3 October 2026. Seoul is 1 hour ahead of Hong Kong.
- Does the time difference between Hong Kong and Seoul change?
- No. It's 1 hour all through 2026: neither city changes its clocks.
- What's the best time for a call between Hong Kong and Seoul?
- Between 09:00 and 16:00 Hong Kong time, when both cities are in working hours (09:00–17:00).
- What time zones are Hong Kong and Seoul in?
- Hong Kong uses Asia/Hong_Kong (UTC+8 today); Seoul uses Asia/Seoul (UTC+9 today).
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