South Korea to BST
-8hSouth Korea
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.
Everything You Need to Know About South Korea and BST Time
South Korea runs on Korean Standard Time (KST) at UTC+09:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts South Korea 8 hours behind BST — a difference of -8h at the current offsets.
In practice, when it is 9:00 AM in South Korea it is 1:00 AM in BST. Midnight in South Korea is 4:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
South Korea to BST time conversion table
| South Korea (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 South Korea to BST time
- Scheduling a call from South Korea to BST: a 10:00 AM start in South Korea lands at 2:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -8h gap: South Korea 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 South Korea.
- Keeping family and friends in sync: knowing that 8:00 PM in South Korea is 12:00 PM in BST makes it easy to avoid calling at 3 AM.
- 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 South Korea 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 South Korea 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 South Korea, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
South Korea and BST have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
South Korea 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
South Korea
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 South Korea and BST?
South Korea (KST, UTC+09:00) is 8 hours behind BST (BST, UTC+01:00). The gap is currently -8h.
How do I convert South Korea time to BST time?
Add -8h to South Korea local time. For example, 9:00 AM in South Korea 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 South Korea.
What is the best time to call BST from South Korea?
There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in South Korea, which is 5:00 AM in BST.
Which is behind, South Korea or BST?
South Korea is 8 hours behind BST. When it is 12:00 PM in South Korea it is 4:00 AM in BST.
Do South Korea and BST use different time zones?
South Korea (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 South Korea–BST difference?
Neither zone observes daylight saving time, so the -8h offset between South Korea and BST is fixed all year.
Which other cities share South Korea's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, South Korea's zone?
KST is used in South Korea, North Korea.
Is there a day difference between South Korea and BST?
Not normally. The -8h gap only pushes the date over the previous day.
What is the time difference between South Korea and BST?
BST is -8h from South Korea.
What timezone is South Korea in?
South Korea operates on its local timezone.
What timezone is BST in?
BST operates on its local timezone.
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 South Korea, what time is it in BST?
When it is 12:00 AM (midnight) in South Korea (KST), it is -8h later in BST (BST).
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