Live · calculated from the IANA time-zone database
Time difference between London and Seoul
Short answer
Seoul is 8 hours ahead of London. Right now it is 13:34 in London (GMT+1, UTC+1) and 21:34 in Seoul (GMT+9, UTC+9).
Right now
London · United Kingdom
13:34
Tuesday, September 15, 2026
British Summer Time · GMT+1 · UTC+1
Seoul · South Korea
21:34
Tuesday, September 15, 2026
Korean Standard Time · GMT+9 · UTC+9
Times at the moment this page was generated. Reload for a fresh reading.
Does the difference between London and Seoul change during the year?
Yes. For 210 days of 2026 the difference is 8 hours, but it moves whenever London or Seoul enters or leaves daylight saving time. Here is the full 2026 calendar (dates in UTC):
| From | Until | Seoul vs London |
|---|---|---|
| January 1 | March 29 | +9 h |
| March 29 | October 25 | +8 h |
| October 25 | December 31 | +9 h |
The highlighted row is the current period. Every date comes from each zone's official rules, not from a hand-typed table.
Best time to call Seoul from London (and vice versa)
With 8 hours between them there is no hour at which London and Seoul are both inside a 9:00–17:00 working day. Teams split across these two cities usually alternate the sacrifice: one week the meeting lands early (7:00–8:00) in London and late (18:00–19:00) in the other city, the next week the other way round. The Timezone Matcher grid shades exactly those compromise hours.
London to Seoul conversion table
Each London hour and its equivalent in Seoul today. Rows shaded green are working hours (9:00–17:00) in both cities at once.
| London time · Tue, Sep 15 | Seoul time |
|---|---|
| 00:00 | 08:00 |
| 01:00 | 09:00 |
| 02:00 | 10:00 |
| 03:00 | 11:00 |
| 04:00 | 12:00 |
| 05:00 | 13:00 |
| 06:00 | 14:00 |
| 07:00 | 15:00 |
| 08:00 | 16:00 |
| 09:00 | 17:00 |
| 10:00 | 18:00 |
| 11:00 | 19:00 |
| 12:00 | 20:00 |
| 13:00 | 21:00 |
| 14:00 | 22:00 |
| 15:00 | 23:00 |
| 16:00 | 00:00next day |
| 17:00 | 01:00next day |
| 18:00 | 02:00next day |
| 19:00 | 03:00next day |
| 20:00 | 04:00next day |
| 21:00 | 05:00next day |
| 22:00 | 06:00next day |
| 23:00 | 07:00next day |
Looking for it the other way round? This page covers both directions: Seoul to London is the same difference with the sign flipped.
The two time zones
London — Europe/London
London sits on the Greenwich meridian: GMT (UTC+0) in winter and British Summer Time (UTC+1) from the last Sunday of March to the last Sunday of October.
Seoul — Asia/Seoul
Seoul keeps Korea Standard Time (UTC+9), identical to Tokyo all year round.
Frequently asked questions
How many hours difference between London and Seoul?
Seoul is 8 hours ahead of London. For most of the year (210 days) the difference is 8 hours; it shifts during the weeks when one of the two cities enters or leaves daylight saving time.
When it is 12:00 noon in London, what time is it in Seoul?
20:00 in Seoul (at today's difference of 8 hours).
What is the best time for a meeting between London and Seoul?
There is no overlap between the 9:00–17:00 working days of London and Seoul. Teams usually alternate: an early-morning slot in London lands in the late evening of the other city.
Do London and Seoul observe daylight saving time?
London: yes. Seoul: no. Because only one of them changes its clocks, the difference moves by one hour twice a year.
What time zone is London in? And Seoul?
London: British Summer Time (Europe/London, UTC+1). Seoul: Korean Standard Time (Asia/Seoul, UTC+9).
Tools
Meeting grid — add both cities and click a slot
Time zone converter — any city, any time
Working hours overlap calculator
Daylight saving time 2027 — all dates
More time differences from London
More time differences from Seoul
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