Инструменты Intosoft

Seoul to BST

-8h

Seoul

KSTSOURCE
South Korea · UTC+09:00
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

BST

BST
UTC+01:00☀ DST active
HH04
:
MM00
  
04:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
Seoul
BST
12:00 AM
4:00 PM-1
2:00 AM
6:00 PM-1
4:00 AM
8:00 PM-1
6:00 AM
10:00 PM-1
8:00 AM
12:00 AM
10:00 AM
2:00 AM
12:00 PM
4:00 AM
2:00 PM
6:00 AM
4:00 PM
8:00 AM
6:00 PM
10:00 AM
8:00 PM
12:00 PM
10:00 PM
2:00 PM

Green 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.

KSTBSTSeoulBusanIncheonDaeguLondonBirminghamManchesterGlasgow
KST Zone
→
BST Zone

Explore all world timezones interactively →

KST – Korea Standard Time

UTC+09:00

Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.

Countries in KST
South KoreaNorth Korea
Major Cities in KST
SeoulBusanIncheonDaeguDaejeonPyongyang
Key Facts about KST
  • •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).
Daylight Saving:No – UTC+09:00 year-round
Learn more about KST on Wikipedia

BST – British Summer Time

UTC+01:00

British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.

Countries in BST
United Kingdom
Major Cities in BST
LondonBirminghamManchesterGlasgowEdinburghCardiffBelfastLiverpoolBristolLeeds
Key Facts about BST
  • •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.
Daylight Saving:Yes – switches to BST
Learn more about BST on Wikipedia

About Seoul

Wikipedia

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.

Population:9.7 million
Metro:25.5 million
Business Hours:9:00 AM - 6:00 PM KST
Currency:KRW (₩)
Stock Exchange:KRX (Korea Exchange)
Key Landmarks
Gyeongbokgung PalaceN Seoul TowerBukchon Hanok VillageDongdaemun Design PlazaCheonggyecheon Stream
Did You Know?

Seoul has the fastest average internet speed in the world.

Learn more about KST timezone →

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 AM4:00 PMprevious day
6:00 AM10:00 PMprevious day
7:00 AM11:00 PMprevious day
8:00 AM12:00 AMsame day
9:00 AM1:00 AMsame day
12:00 PM4:00 AMsame day
3:00 PM7:00 AMsame day
5:00 PM9:00 AMsame day
6:00 PM10:00 AMsame day
9:00 PM1:00 PMsame 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

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).