Live Synchronized Time Difference
SeoultoLondonTime Difference
🇰🇷
Seoul
South Korea (GMT+9)00:10:22UTC+9:00
🇬🇧
London
United Kingdom (GMT)15:10:22UTC+0:00
Direct Distance8,857 km (5,503 miles)
Estimated Flight Time~10.9 hours
Business Overlap0 overlapping hours (9am–5pm)
Feasible Shoulder Hours Window
Recommended calling window between Seoul and London
Off-Peak Calling Window
Seoul Time
4:00 PM – 9:00 PM
London Time
7:00 AM – 12:00 PM
There are no overlapping 9-to-5 working hours between Seoul and London. The optimal compromise window falls during morning/evening shoulder periods (7:00 AM – 9:00 PM) when participants in both locations are awake.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between Seoul and London.
Work (9am-5pm)ShoulderSleep / Off
| Seoul Time (South Korea) | London Time (United Kingdom) | Status & Recommendation |
|---|---|---|
| 00:00AM | 15:00PM-1 day | ⚪ Outside Work Hours |
| 01:00AM | 16:00PM-1 day | ⚪ Outside Work Hours |
| 02:00AM | 17:00PM-1 day | ⚪ Outside Work Hours |
| 03:00AM | 18:00PM-1 day | ⚪ Outside Work Hours |
| 04:00AM | 19:00PM-1 day | ⚪ Outside Work Hours |
| 05:00AM | 20:00PM-1 day | ⚪ Outside Work Hours |
| 06:00AM | 21:00PM-1 day | ⚪ Outside Work Hours |
| 07:00AM | 22:00PM-1 day | ⚪ Outside Work Hours |
| 08:00AM | 23:00PM-1 day | ⚪ Outside Work Hours |
| 09:00AM | 00:00AM | ⚪ Outside Work Hours |
| 10:00AM | 01:00AM | ⚪ Outside Work Hours |
| 11:00AM | 02:00AM | ⚪ Outside Work Hours |
| 12:00PM | 03:00AM | ⚪ Outside Work Hours |
| 13:00PM | 04:00AM | ⚪ Outside Work Hours |
| 14:00PM | 05:00AM | ⚪ Outside Work Hours |
| 15:00PM | 06:00AM | ⚪ Outside Work Hours |
| 16:00PM | 07:00AM | 🟡 Feasible (Shoulder Hour) |
| 17:00PM | 08:00AM | ⚪ Outside Work Hours |
| 18:00PM | 09:00AM | ⚪ Outside Work Hours |
| 19:00PM | 10:00AM | ⚪ Outside Work Hours |
| 20:00PM | 11:00AM | ⚪ Outside Work Hours |
| 21:00PM | 12:00PM | ⚪ Outside Work Hours |
| 22:00PM | 13:00PM | ⚪ Outside Work Hours |
| 23:00PM | 14:00PM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between Seoul and London?
London is 9 hours behind Seoul.
What is the best time to schedule a cross-border meeting between Seoul and London?
Because of the wide timezone separation, a compromise meeting window during early morning in one location and evening in the other is recommended.
Does daylight saving time (DST) affect the time difference between Seoul and London?
Yes. If either South Korea or United Kingdom observes seasonal Daylight Saving Time transitions, the offset difference shifts by one hour on scheduled transition dates.