Seoul to BST
-8hSeoul
KSTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and BST on the World Map
The map below highlights the KST (Korea Standard Time) and BST (British Summer Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
About Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
Everything You Need to Know About Seoul and BST Time
Seoul runs on Korean Standard Time (KST) at UTC+09:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts Seoul 8 hours behind BST — a difference of -8h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 1:00 AM in BST. Midnight in Seoul is 4:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Seoul to BST time conversion table
| Seoul (KST) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | previous day |
| 6:00 AM | 10:00 PM | previous day |
| 7:00 AM | 11:00 PM | previous day |
| 8:00 AM | 12:00 AM | same day |
| 9:00 AM | 1:00 AM | same day |
| 12:00 PM | 4:00 AM | same day |
| 3:00 PM | 7:00 AM | same day |
| 5:00 PM | 9:00 AM | same day |
| 6:00 PM | 10:00 AM | same day |
| 9:00 PM | 1:00 PM | same day |
Why people convert Seoul to BST time
- Scheduling a call from Seoul to BST: a 10:00 AM start in Seoul lands at 2:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -8h gap: Seoul and BST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in BST is 1:00 AM in Seoul.
- Booking travel or deliveries: tracking BST local time against Seoul keeps pickup windows and arrival estimates honest across the -8h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -8h gap is not.
- With a -8h gap there is no shared 9-to-5 window, so alternate the early start: one week Seoul takes the early slot, the next week BST does.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
About BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
Best time to call between Seoul and BST
With a -8h offset there is no overlap inside a normal 9 AM – 5 PM day. BST opens at 9:00 AM BST, which is 1:00 AM in Seoul, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Seoul and BST have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Seoul is 8 hours behind BST (KST UTC+09:00 → BST UTC+01:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Seoul
Does not observe DST
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Seoul and BST?
Seoul (KST, UTC+09:00) is 8 hours behind BST (BST, UTC+01:00). The gap is currently -8h.
How do I convert Seoul time to BST time?
Add -8h to Seoul local time. For example, 9:00 AM in Seoul is 1:00 AM in BST.
What time is it in BST right now?
BST uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -8h offset from Seoul.
What is the best time to call BST from Seoul?
There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in Seoul, which is 5:00 AM in BST.
Which is behind, Seoul or BST?
Seoul is 8 hours behind BST. When it is 12:00 PM in Seoul it is 4:00 AM in BST.
Do Seoul and BST use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while BST uses BST at UTC+01:00. The IANA identifiers are Asia/Seoul and Europe/London.
Does daylight saving time affect the Seoul–BST difference?
Neither zone observes daylight saving time, so the -8h offset between Seoul and BST is fixed all year.
Which other cities share Seoul's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, Seoul's zone?
KST is used in South Korea, North Korea.
Is there a day difference between Seoul and BST?
Not normally. The -8h gap only pushes the date over the previous day.
What is the time difference between Seoul and BST?
BST is -8h from Seoul.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
What timezone is BST in?
BST operates on its local timezone.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the BST timezone?
Major cities in the BST timezone include London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool.
What is the UTC offset for BST?
British Summer Time (BST) is at UTC+01:00. During daylight saving time, it shifts to BST.
What should I know about the BST timezone?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
When is it midnight in Seoul, what time is it in BST?
When it is 12:00 AM (midnight) in Seoul (KST), it is -8h later in BST (BST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Seoul time conversions
- seoul to kst
- seoul to south korea
- seoul to dubai
- seoul to mumbai
- seoul to delhi
- seoul to bangalore
- seoul to kathmandu
- seoul to bangkok
- seoul to singapore
- seoul to hong kong
- seoul to shanghai
- seoul to beijing
- seoul to tokyo
- seoul to osaka
- seoul to new york
- seoul to london
- seoul to sydney
- seoul to los angeles
- seoul to paris
- seoul to berlin
- seoul to toronto
- new york to seoul
- london to seoul
- dubai to seoul
- tokyo to seoul
- singapore to seoul
- sydney to seoul
- los angeles to seoul
- paris to seoul
- delhi to seoul
- mumbai to seoul
- berlin to seoul
- hong kong to seoul
- toronto to seoul
- kathmandu to seoul
See every conversion from Seoul →·See every conversion from BST →