London is currently 8 hours behind Seoul. Convert time between London and Seoul, see the exact difference, and find the best hours for calls and meetings.
London uses British Summer Time. Seoul uses Korean Standard Time. London time is 8 hours behind Seoul. So, when it is 12:00 AM in London, it is 8:00 AM in Seoul.
Common London times and their Seoul equivalents.
| London Time | Seoul Time |
|---|---|
| 12:00 AM London | 8:00 AM Seoul |
| 1:00 AM London | 9:00 AM Seoul |
| 2:00 AM London | 10:00 AM Seoul |
| 3:00 AM London | 11:00 AM Seoul |
| 4:00 AM London | 12:00 PM Seoul |
| 5:00 AM London | 1:00 PM Seoul |
| 6:00 AM London | 2:00 PM Seoul |
| 7:00 AM London | 3:00 PM Seoul |
| 8:00 AM London | 4:00 PM Seoul |
| 9:00 AM London | 5:00 PM Seoul |
| 10:00 AM London | 6:00 PM Seoul |
| 11:00 AM London | 7:00 PM Seoul |
| 12:00 PM London | 8:00 PM Seoul |
| 1:00 PM London | 9:00 PM Seoul |
| 2:00 PM London | 10:00 PM Seoul |
| 3:00 PM London | 11:00 PM Seoul |
| 4:00 PM London | 12:00 AM Seoul |
| 5:00 PM London | 1:00 AM Seoul |
| 6:00 PM London | 2:00 AM Seoul |
| 7:00 PM London | 3:00 AM Seoul |
| 8:00 PM London | 4:00 AM Seoul |
| 9:00 PM London | 5:00 AM Seoul |
| 10:00 PM London | 6:00 AM Seoul |
| 11:00 PM London | 7:00 AM Seoul |
London uses Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) in summer. The UK clocks go forward one hour on the last Sunday of March and back on the last Sunday of October. GMT takes its name from the Royal Observatory in Greenwich, east London — the historical origin of UTC-based world time.
Seoul uses Korea Standard Time (KST, UTC+9) year-round, identical to Tokyo in offset. South Korea does not observe Daylight Saving Time. The consistent UTC+9 offset means Seoul–Tokyo scheduling has zero drift throughout the year.
Both London and Seoul may observe Daylight Saving Time, which means the offset between them can change twice a year. Here is what to expect each season.
| Period | Note | London | Seoul | Offset |
|---|---|---|---|---|
| Nov – Mar | Both on standard time | GMT (UTC+0) | GMT+9 (UTC+9) | 9 hours |
| Mar – late Mar | US clocks forward, some zones still on standard | GMT (UTC+0) | GMT+9 (UTC+9) | 9 hours |
| Late Mar – Oct current | Both on summer / daylight time | GMT+1 (UTC+1) | GMT+9 (UTC+9) | 8 hours |
| Late Oct – early Nov | Clocks transitioning — check exact date | GMT (UTC+0) | GMT+9 (UTC+9) | 9 hours |
The transition window typically lasts 1–2 weeks in spring and autumn. If you have a recurring weekly meeting near a clock change, verify the exact date to avoid a missed call.
London is currently 8 hours behind Seoul. London uses British Summer Time (UTC+1) and Seoul uses Korean Standard Time (UTC+9).
The best overlap window is 9:00 am–10:00 am London time, which corresponds to 5:00 pm–6:00 pm Seoul time. Both cities are within standard business hours (9 am–6 pm) during this window.
When it is 9:00 AM in London, it is 5:00 pm in Seoul. London is 8 hours behind Seoul.
When it is 5:00 PM in Seoul, it is 9:00 am in London.
London observes Daylight Saving Time but Seoul does not. This means the offset between the two cities changes by one hour when London transitions its clocks — typically in late March (spring forward) and late October (fall back). Always verify the current offset when scheduling around those dates.