What is the time difference between London and Seoul?

Seoul is 8 hours ahead of London. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.

When is the best time to call Seoul from London?

Between 09:00–10:00 in London, which is 17:00–18:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.

Does London observe daylight saving time?

Yes. London runs on UTC+0 in winter and UTC+1 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.

Does Seoul observe daylight saving time?

No. Seoul stays on UTC+9 all year, so its clocks never move.

If it is midday in London, what time is it in Seoul?

It is 20:00 in Seoul, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.

Which time zones do London and Seoul use?

London uses Europe/London, currently UTC+1 (BST), and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.

Convert London time to Seoul time

Right now Seoul runs 8 hours ahead of London. That gap is not fixed: it moves when either city changes its clocks.

Convert a time

From

Date

Time

Converted time

—

The converter needs JavaScript to run. Everything below — offsets, daylight saving dates and the hour-by-hour table — is part of the page and works without it.

Hour by hour

Every hour of a day in London, and what the clock reads in Seoul at that same moment.

London	Seoul
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

Daylight saving time

London changes its clocks; Seoul does not. The difference between them therefore shifts by an hour twice a year.

London

Observes daylight saving time

Standard: UTC+0
Daylight: UTC+1
Next change: 2026-10-25 −60m

Seoul

Does not observe daylight saving time

Standard: UTC+9

When you can actually talk

You have 1 hour of shared working time: 09:00–10:00 in London, which is 17:00–18:00 in Seoul.

London 09:00–10:00Seoul 17:00–18:00

Reference

The underlying data, in case you need to put it in a calendar invitation or a configuration file.

	London	Seoul
IANA zone	Europe/London	Asia/Seoul
Abbreviation	BST	UTC+9
Standard offset	UTC+0	UTC+9
Daylight offset	UTC+1	—
Clock changes this year	2	0
Country	United Kingdom	South Korea

Example, not the current time. Live times appear once the page loads.

Common questions

What is the time difference between London and Seoul?: Seoul is 8 hours ahead of London. That figure is current — it changes by an hour when either city starts or ends daylight saving, and the exact dates are listed above.
When is the best time to call Seoul from London?: Between 09:00–10:00 in London, which is 17:00–18:00 in Seoul. That is the only stretch where both cities are inside a 09:00–18:00 day.
Does London observe daylight saving time?: Yes. London runs on UTC+0 in winter and UTC+1 in summer. The next change is on 2026-10-25, when clocks go back by 60 minutes.
Does Seoul observe daylight saving time?: No. Seoul stays on UTC+9 all year, so its clocks never move.
If it is midday in London, what time is it in Seoul?: It is 20:00 in Seoul, on the same calendar date. That holds for the current offsets; it shifts by an hour around the daylight saving dates listed above.
Which time zones do London and Seoul use?: London uses Europe/London, currently UTC+1 (BST), and Seoul uses Asia/Seoul, currently UTC+9. Those identifiers are the ones to use in code — abbreviations are ambiguous and offsets change.