KST to GMT Converter
South Korea to UK/Ireland — a 9.0-hour gap with seasonal variation due to daylight saving. Coordination typically centers on trade, investment, and remote team management.
Time Zone Converter
Compare Times
| KST | GMT |
|---|---|
| 8:00 AM KST | 11:00 PM GMT |
| 9:00 AM KST | 12:00 AM GMT |
| 10:00 AM KST | 1:00 AM GMT |
| 11:00 AM KST | 2:00 AM GMT |
| 12:00 PM KST | 3:00 AM GMT |
| 1:00 PM KST | 4:00 AM GMT |
| 2:00 PM KST | 5:00 AM GMT |
| 3:00 PM KST | 6:00 AM GMT |
| 4:00 PM KST | 7:00 AM GMT |
| 5:00 PM KST | 8:00 AM GMT |
| 6:00 PM KST | 9:00 AM GMT |
| 7:00 PM KST | 10:00 AM GMT |
| 8:00 PM KST | 11:00 AM GMT |
Common Time Conversions
EST · New York →
CST · Chicago →
MST · Denver →
PST · Los Angeles →
AKST · Anchorage →
HST · Honolulu →
UTC · Universal →
GMT · London →
IST · New Delhi →
CET · Paris →
How Time Zone Conversion Works
Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.
GMT is 9 hours behind KST (standard time).
Daylight Saving Time: GMT observes DST; KST does not. The offset between them shifts by 1 hour twice a year — in spring and autumn — when GMT changes its clocks.
Best Meeting Times: KST & GMT
KST
18:00–19:00
Korea Time
GMT
09:00–10:00
Greenwich Time
Recommended time: 18:00 KST / 09:00 GMT
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
KST · Korea Time
Standard offset +09:00
Korea Time remains on a constant standard offset for the year.
South Korea does not currently observe DST; temporary DST experiments ended in 1988.
GMT · Greenwich Time
Standard offset +00:00
- Starts
- Mar 29, 2026 · 01:00 → 02:00
- last_sunday_of_march
- Ends
- Oct 25, 2026 · 02:00 → 01:00
- last_sunday_of_october
- Daylight time
- BST · +01:00
GMT countries vary. The UK, Ireland, and Portugal observe summer time; Iceland and most of West Africa remain on GMT year-round.
Principal Cities
KST — Korea Time
- SeoulSouth Korea
- BusanSouth Korea
- IncheonSouth Korea
- DaeguSouth Korea
GMT — Greenwich Time
- LondonUnited Kingdom
- DublinIreland
- LisbonPortugal
- CasablancaMorocco
Flight Information
Route
ICN ↔ LHR
Avg. flight time
11h
Direct flights
Available
~11h direct flight.