Time difference between London and Seoul
Seoul is currently 9 hours ahead of London. Their working days do not overlap at all, so one side has to step outside office hours. The table below shows the hours side by side.
National conventions are the default and the public figure. Change them here for your own answer — the chart, the window and the calendar file all follow.
Not on that day. Sunday is a rest day in both London and Seoul. The hours above are what you would share on a day you are both at work.
09:00 London At work = 18:00 Seoul Awake
Tap any hour to read it in both cities.
The difference changes twice a year
London and Seoul do not change their clocks on the same dates, so a standing meeting moves by an hour in these weeks.
- 8 November – 27 March +9 h
- 31 October +9 h
- usually +8 h
Days when one side is not at work
A public holiday is not a time-zone fact, so no converter shows it — but it is the same question.
- 28 December — Boxing Day (substitute day) London off
- 9 February — 설날 (대체공휴일) Seoul off
- 1 March — 3·1절 Seoul off
Hour by hour
| London | Seoul | |
|---|---|---|
| 00:00 | 09:00 | |
| 01:00 | 10:00 | |
| 02:00 | 11:00 | |
| 03:00 | 12:00 | |
| 04:00 | 13:00 | |
| 05:00 | 14:00 | |
| 06:00 | 15:00 | |
| 07:00 | 16:00 | |
| 08:00 | 17:00 | |
| 09:00 | 18:00 | |
| 10:00 | 19:00 | |
| 11:00 | 20:00 | |
| 12:00 | 21:00 | |
| 13:00 | 22:00 | |
| 14:00 | 23:00 | |
| 15:00 | 00:00 | |
| 16:00 | 01:00 | |
| 17:00 | 02:00 | |
| 18:00 | 03:00 | |
| 19:00 | 04:00 | |
| 20:00 | 05:00 | |
| 21:00 | 06:00 | |
| 22:00 | 07:00 | |
| 23:00 | 08:00 |
The difference adjusts automatically for daylight saving in both London and Seoul.
The working week
- London
- 09:00 to 17:00, Monday, Tuesday, Wednesday, Thursday, Friday.
- Seoul
- 09:00 to 18:00, Monday, Tuesday, Wednesday, Thursday, Friday.
Sources and last check
Times, offsets and sun positions on this page are computed live from the IANA timezone database and the NOAA solar algorithm, so they do not depend on the review dates below.
- Working hours and weekend days for 55 countries
- Source: Published national labour conventions and government working-hours guidance. Last checked, reviewed every 12 months.
Not covered:A national convention, not any given employer. Countries not listed fall back to a nine-to-five, Monday to Friday default, and pages say so rather than implying we checked.
FAQ
How many hours between London and Seoul?
Seoul is 9 hours ahead of London (+9 hours).
When is the best time for a meeting?
There is no time that suits both: London works 09:00–17:00 and Seoul works 09:00–18:00 locally, and those never coincide. Someone has to take the call outside office hours.