London time to Seoul time
Seoul is 9 hours ahead of London in January and 8 hours ahead of in July (London BST/UTC+01:00 in summer; Seoul GMT+9/UTC+09:00). Enter a London time below to convert it, or leave it blank to see the current time in both cities.
How to use the London to Seoul time
- Type a London time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the Seoul time and the working-hours table.
Time difference between London and Seoul
Seoul is 9 hours ahead of London in January and 8 hours ahead of in July. London observes daylight saving time and Seoul does not, so the difference changes twice a year. London uses Europe/London time (UTC+00:00 in January, UTC+01:00 in July); Seoul uses Asia/Seoul (UTC+09:00 in January, UTC+09:00 in July).
Working week in London and Seoul
London: Office hours 09:00–17:30, weekend Saturday–Sunday. Clocks go forward on the last Sunday of March (BST, UTC+1) and back on the last Sunday of October (GMT).
Seoul: Korea Standard Time, UTC+9 all year. Office hours 09:00–18:00, weekend Saturday–Sunday.
Quick conversion table (summer difference)
| London | Seoul |
|---|---|
| 08:00 | 16:00 |
| 09:00 | 17:00 |
| 10:00 | 18:00 |
| 12:00 | 20:00 |
| 14:00 | 22:00 |
| 16:00 | 00:00 (next day) |
| 18:00 | 02:00 (next day) |
| 20:00 | 04:00 (next day) |
| 22:00 | 06:00 (next day) |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between London and Seoul
Within normal office hours (09:00–18:00) in both cities: 9:00–9:00 London time. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See Seoul to London, or the general time zone converter.
Frequently asked questions
How many hours ahead is Seoul from London?
Seoul is 9 hours ahead of London in January and 8 hours ahead of in July.
When it is 12:00 noon in London, what time is it in Seoul?
20:00 in summer (); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.