Highlighted rows fall within 09:00–18:00 in both places: 1 shared working hour.
Clock changes in London and Seoul
London
British Summer Time (BST)
Next clock change Sun 25 Oct 2026 (UTC+1 → UTC+0)
Seoul
Korean Standard Time (KST)
No daylight saving time.
Time difference between London and Seoul today
Today Seoul is 8 hours ahead of London. When it is 09:00 in London, it is 17:00 in Seoul. London is on British Summer Time (BST); Seoul is on Korean Standard Time (KST).
When the London to Seoul time difference changes
For most of the year Seoul is 8 hours ahead of London. From 25 October to 31 December 2026, Seoul is 9 hours ahead of London instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Seoul vs London
Length
29 March 2026 to 24 October 2026
8 hours ahead
210 days
25 October 2026 to 31 December 2026
9 hours ahead
68 days
1 January 2027 to 27 March 2027
9 hours ahead
86 days
28 March 2027 to 30 October 2027
8 hours ahead
217 days
31 October 2027 to 31 December 2027
9 hours ahead
62 days
Calling hours for London and Seoul
When Seoul is 8 hours ahead of London: no shared 09:00 to 17:00 hours; try 09:00 in London (17:00 in Seoul).
When Seoul is 9 hours ahead of London: no shared 09:00 to 17:00 hours; try 08:00 in London (17:00 in Seoul).
Frequently asked questions about London and Seoul time
What time is it in Seoul when it is 9:00 AM in London?
17:00 today; Seoul is 8 hours ahead of London.
Does the time difference between London and Seoul change?
Yes. It is usually 8 hours ahead, but changes when one side moves its clocks: 9 hours ahead from 25 October to 31 December 2026; 9 hours ahead from 1 January to 27 March 2027.