What is KST in BST?
British Time is 9 hours behind
Convert a time
GMT — British Time
8:00 am
GMT, Sat
- Time in Seoul
- 5:29:21 PM
- Time in London
- 8:29:21 AM
- Difference
- −9 h
- Next clock change
- March 28, 2027
When the difference changes
Korea Standard Time and British Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – March 28, 2027British Time is 9 hours behind
- March 28, 2027 – October 31, 2027British Time is 8 hours behind
- October 31, 2027 – onwardsBritish Time is 9 hours behind
Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.
Daylight saving
Korea Standard Time
Korea Standard Time stays on KST all year, so its offset from UTC never moves.
British Time
Clocks go forward one hour — 1:00 am becomes 2:00 am local time, and the zone is on BST after that.
KST to BST conversion table
Every hour of Saturday, November 7, 2026, converted from Korea Standard Time to British Time. 9 of the 24 hours fall on a different calendar day in London, which is marked.
- 12:00 am KST
- 3:00 pm GMT−1 day
- 1:00 am KST
- 4:00 pm GMT−1 day
- 2:00 am KST
- 5:00 pm GMT−1 day
- 3:00 am KST
- 6:00 pm GMT−1 day
- 4:00 am KST
- 7:00 pm GMT−1 day
- 5:00 am KST
- 8:00 pm GMT−1 day
- 6:00 am KST
- 9:00 pm GMT−1 day
- 7:00 am KST
- 10:00 pm GMT−1 day
- 8:00 am KST
- 11:00 pm GMT−1 day
- 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
- 9:00 pm KST
- 12:00 pm GMT
- 10:00 pm KST
- 1:00 pm GMT
- 11:00 pm KST
- 2:00 pm GMT
Scheduling between the two
There is no overlap between a nine-to-six working day in Seoul and one in London — the gap is too wide. A call has to sit early or late for one side. Early morning in Seoul is the usual compromise, since that is late afternoon or evening in London.
A note on BST: it can also mean Bangladesh Standard Time (UTC+6). This page means British Summer Time.
British Time (GMT) is used in the whole United Kingdom. In winter the UK is on GMT; from late March to late October it is on BST, an hour ahead.
Other conversions
- BST to KST
- KST to UTC
- KST to GMT
- KST to EST
- KST to CST
- KST to MST
- KST to PST
- KST to AKST
- KST to HST
- KST to CET
- KST to IST
- KST to CST (China)
- KST to JST
- KST to AEST
- KST to AST
- KST to Mexico City
- KST to BRT
- KST to ART
- KST to EET
- KST to WET
- KST to MSK
- KST to TRT
- KST to SAST
- KST to WAT
- KST to EAT
- KST to GST
- KST to PKT
- KST to ICT
- KST to WIB
- KST to SGT
- KST to HKT
- KST to PHT
- KST to AWST
- KST to ACST
- KST to NZST
- All zones