Time Difference Between London and Seoul
Seoul is 9h ahead of London in standard time, and 8h ahead while London is on daylight saving time.
London clocks move forward on the last Sunday of March and back on the last Sunday of October. Seoul keeps the same clock all year. The figures above cover each part of the year. They do not come from the offset on the day the site was built. The live clocks use the current time.
Working Hours Overlap
For each hour of London's working day (9:00-18:00), here is the corresponding local time in Seoul. Rows highlighted green fall within standard working hours (9:00-18:00) in both cities. Each block is one part of the year, so the table does not change with the day this page was built.
9h ahead (standard time)
| London | Seoul | Both working hours? |
|---|---|---|
| 9 AM | 6 PM | No |
| 10 AM | 7 PM | No |
| 11 AM | 8 PM | No |
| 12 PM | 9 PM | No |
| 1 PM | 10 PM | No |
| 2 PM | 11 PM | No |
| 3 PM | 12 AM | No |
| 4 PM | 1 AM | No |
| 5 PM | 2 AM | No |
| 6 PM | 3 AM | No |
8h ahead (daylight saving time in London, while Seoul is on standard time)
| London | Seoul | Both working hours? |
|---|---|---|
| 9 AM | 5 PM | Yes |
| 10 AM | 6 PM | No |
| 11 AM | 7 PM | No |
| 12 PM | 8 PM | No |
| 1 PM | 9 PM | No |
| 2 PM | 10 PM | No |
| 3 PM | 11 PM | No |
| 4 PM | 12 AM | No |
| 5 PM | 1 AM | No |
| 6 PM | 2 AM | No |
Best Time to Meet
9h ahead (standard time)
London and Seoul don't share a 9 AM-6 PM working-hours window during standard time. The least disruptive compromise is around 6 AM in London, which falls at 3 PM in Seoul. Expect one side to take an early or late call.
8h ahead (daylight saving time in London, while Seoul is on standard time)
- 9 AM-10 AM in London (5 PM-6 PM in Seoul) works for both sides. It falls within 9 AM-6 PM in both time zones.
How the Difference Changes
Only London changes its clocks, so the gap is not one number. The rules are above. The dates for the year you are reading this page load below.
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London
London uses the Europe/London time zone. Standard time is UTC, and daylight saving time is UTC+1.
Seoul
Seoul uses the Asia/Seoul time zone, at UTC+9 all year. This zone does not observe daylight saving time.