London to JST Time Converter
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Quick answers
Selected conversion
1:00 pm13:00 BST (UTC+1), Oct 18, 2026 = 9:00 pm21:00 JST (UTC+9), Oct 18, 2026
London is 8 hours behind JST.
How the time difference changes
For most of the year, London is 8 hours behind JST. From Oct 25, 2026 to Mar 28, 2027, London is 9 hours behind JST.
For most of the year, working hours of 9:00 am to 6:00 pm in London correspond to 5:00 pm to 2:00 am (next day) in JST. At other times of the year, working hours of 9:00 am to 6:00 pm in London correspond to 6:00 pm to 3:00 am (next day) in JST.For most of the year, working hours of 09:00 to 18:00 in London correspond to 17:00 to 02:00 (next day) in JST. At other times of the year, working hours of 09:00 to 18:00 in London correspond to 18:00 to 03:00 (next day) in JST.
Compare London time with JST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
BST (British Summer Time) is 8 hours behind Japan Standard Time.
1:00 pm13:00 in London, United Kingdom is 9:00 pm21:00 in JST
London to JST call time
Best time for a conference call or a meeting is between 9am-10am09:00-10:00 in London which corresponds to 5pm-6pm17:00-18:00 in JST
1:00 pm13:00 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hour
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
1:00 pm13:00 London, United Kingdom / 9:00 pm21:00 JST
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| London, United Kingdom | JST |
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London Time Zone and Facts
Time Zone
GMT – Greenwich Mean Time, UTC+0 (standard time)
London Facts
Japan Standard Time
Offset: JST is 9 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Japan
Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 9.733 million people. Other major cities in this time zone include Yokohama, Osaka, Nagoya, Sapporo.
Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
Current time in Japan: Japan time now
JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time