Seoul to London Time
KST to GMT Converter — 9 AM KST is 12:00 AM GMT
Seoul is 9 hours ahead of London. Convert any time between Seoul (KST) and London (GMT/BST) instantly.
Seoul
South Korea
London
United Kingdom
Add Time Zones to Compare
Time Zone Comparison
Seoul to London Time Conversion Table
| Seoul (KST) | London (GMT) |
|---|---|
| 12:00 AM | 4:00 PM |
| 2:00 AM | 6:00 PM |
| 4:00 AM | 8:00 PM |
| 6:00 AM | 10:00 PM |
| 8:00 AM | 12:00 AM |
| 10:00 AM | 2:00 AM |
| 12:00 PM | 4:00 AM |
| 2:00 PM | 6:00 AM |
| 4:00 PM | 8:00 AM |
| 6:00 PM | 10:00 AM |
| 8:00 PM | 12:00 PM |
| 10:00 PM | 2:00 PM |
Seoul & London — Business & Scheduling Guide
Seoul (South Korea) is a technology-driven economy known for rapid innovation, with key industries in semiconductors, automotive, shipbuilding, and K-content. London (United Kingdom) is a leading center for finance and international trade, known for finance, insurance, media, and professional services. With a 9-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Seoul and London
With London 9 hours behind Seoul, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. South Korean work culture is fast-paced with typical hours of 9 AM–6 PM, though recent reforms have reduced maximum weekly hours. British business culture values politeness and punctuality, with typical hours of 9 AM–5:30 PM. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.
Daylight Saving Time Considerations
London observes Daylight Saving Time (GMT/BST), while Seoul stays on KST year-round. When London switches to daylight time, the effective time difference shifts by 1 hour. This typically happens in spring and fall, and the exact dates vary by country. If you have recurring cross-timezone meetings, recalculate the schedule after each DST transition.
KST to GMT — Quick Reference
KST (KST) stands for the timezone used in Seoul, South Korea (UTC+9). GMT (GMT/BST) is the timezone used in London, United Kingdom (UTC+0). Seoul is 9 hours ahead of London.
To convert KST to GMT, subtract 9 hours from KST time. For example, KST 9:00 AM = GMT 12:00 AM.
Key Facts
- •Time difference: Seoul (UTC+9) is 9 hours ahead of London (UTC+0).
- •Daylight Saving Time: Seoul does not observe DST (KST). London observes DST (GMT/BST).
- •Regions: Seoul is located in South Korea and uses the KST time zone. London is located in United Kingdom and uses the GMT/BST time zone.
- •Best time to call: There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
Frequently Asked Questions
What is the time difference between Seoul and London?
Seoul is 9 hours ahead of London.
What time is it in London when it's 9 AM in Seoul?
When it's 9:00 AM in Seoul, it is 12:00 AM in London.
What time is 9 PM KST in GMT?
9 PM KST (Seoul time) is 12:00 PM GMT (London time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Seoul and London?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert KST to GMT?
KST (KST) is the timezone for Seoul, South Korea (UTC+9). GMT (GMT/BST) is the timezone for London, United Kingdom (UTC+0). Seoul is 9 hours ahead of London. Quick examples: 9 AM KST = 12:00 AM GMT, 12 PM KST = 3:00 AM GMT, 3 PM KST = 6:00 AM GMT, 6 PM KST = 9:00 AM GMT.
Is Seoul ahead of or behind London?
Seoul is 9 hours ahead of London. When it's noon in Seoul, it's 3:00 AM in London.
Does Seoul or London change clocks for Daylight Saving Time?
No, Seoul does not observe DST — it stays on KST year-round. London observes DST and switches between GMT/BST. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
Related Time Zone Conversions
More from Seoul
Convert to London
Working across time zones?
Auto-sync calendar events into your timesheet — no matter what time zone your team is in. Connect Google Calendar, Teams, or Zoom and export a polished timesheet in seconds.
No credit card required. Free forever plan available.