Karatsu to London time converter

London is 8 hours behind Karatsu. When it is 9:00 AM in Karatsu, it is 1:00 AM in London.

Karatsu JST

Tuesday, October 20, 2026

London BST

Monday, October 19, 2026

Karatsu
Japan
Tue, Oct 20
JSTUTC+9
London
United Kingdom
Mon, Oct 19
BSTUTC+1-8h
Finding your time zone…
Shared working hours (9:00–18:00)

Karatsu to London conversion table

Every hour of today in Karatsu and the matching time in London. Light rows are typical working hours (9:00–18:00).

KaratsuLondon
12:00 AM4:00 PM−1 day
1:00 AM5:00 PM−1 day
2:00 AM6:00 PM−1 day
3:00 AM7:00 PM−1 day
4:00 AM8:00 PM−1 day
5:00 AM9:00 PM−1 day
6:00 AM10:00 PM−1 day
7:00 AM11:00 PM−1 day
8:00 AM12:00 AM
9:00 AM1:00 AM
10:00 AM2:00 AM
11:00 AM3:00 AM
12:00 PM4:00 AM
1:00 PM5:00 AM
2:00 PM6:00 AM
3:00 PM7:00 AM
4:00 PM8:00 AM
5:00 PM9:00 AM
6:00 PM10:00 AM
7:00 PM11:00 AM
8:00 PM12:00 PM
9:00 PM1:00 PM
10:00 PM2:00 PM
11:00 PM3:00 PM

Best time to call or meet

Both sides are at work from 5:00 PM – 6:00 PM in Karatsu (9:00 AM – 10:00 AM in London).

Daylight saving time and the difference

The difference changes during the year because Karatsu and London switch clocks on different dates:

  • Oct 20, 2026 – Oct 25, 2026: -8h
  • Oct 25, 2026 – Mar 28, 2027: -9h
  • Mar 28, 2027 – Oct 20, 2027: -8h

Distance

Karatsu and London are 9,390 km (5,835 miles) apart in a straight line.

More conversions

London to KaratsuKaratsu to New YorkKaratsu to Los AngelesKaratsu to ChicagoKaratsu to TorontoKaratsu to São PauloKaratsu to ParisKaratsu to BerlinKaratsu to MoscowKaratsu to DubaiKaratsu to New DelhiKaratsu to BangkokKaratsu to Singapore
New York to LondonLos Angeles to LondonChicago to LondonToronto to LondonSão Paulo to LondonParis to LondonBerlin to LondonMoscow to LondonDubai to LondonNew Delhi to LondonBangkok to LondonSingapore to London

Questions and answers

What is the time difference between Karatsu and London?

London is 8 hours behind Karatsu.

What time is it in London when it is 9 AM in Karatsu?

When it is 9:00 AM in Karatsu, it is 1:00 AM in London.

When is the best time to call London from Karatsu?

Both sides are at work from 5:00 PM – 6:00 PM in Karatsu (9:00 AM – 10:00 AM in London).

Does the time difference between Karatsu and London change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.