BST to JST Converter
Quick answers
Selected conversion
1:00 pm13:00 BST (UTC+1), Oct 4, 2026 = 9:00 pm21:00 JST (UTC+9), Oct 4, 2026
BST is 8 hours behind JST.
BST and JST examples
These examples always use BST (UTC+1) and JST (UTC+9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
BST is 8 hours behind JST.
How the time difference changes
For most of the year, BST is 8 hours behind JST. At other times of the year, GMT is 9 hours behind JST.
For most of the year, working hours of 9:00 am to 5:00 pm in BST correspond to 5:00 pm to 1:00 am (next day) in JST. At other times of the year, working hours of 9:00 am to 5:00 pm in GMT correspond to 6:00 pm to 2:00 am (next day) in JST.For most of the year, working hours of 09:00 to 17:00 in BST correspond to 17:00 to 01:00 (next day) in JST. At other times of the year, working hours of 09:00 to 17:00 in GMT correspond to 18:00 to 02:00 (next day) in JST.
Compare BST time with JST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
British Summer Time is 8 hours behind Japan Standard Time.
1:00 pm13:00 in BST is 9:00 pm21:00 in JST
BST to JST call time
Best time for a conference call or a meeting is between 8:30am-9:30am08:30-09:30 in BST which corresponds to 4:30pm-5:30pm16:30-17:30 in JST
1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
1:00 pm13:00 BST / 9:00 pm21:00 JST
| BST | JST |
|---|---|
| 12:00am | 8:00am |
| 1:00am | 9:00am |
| 2:00am | 10:00am |
| 3:00am | 11:00am |
| 4:00am | 12:00pm |
| 5:00am | 1:00pm |
| 6:00am | 2:00pm |
| 7:00am | 3:00pm |
| 8:00am | 4:00pm |
| 9:00am | 5:00pm |
| 10:00am | 6:00pm |
| 11:00am | 7:00pm |
| 12:00pm | 8:00pm |
| 1:00pm | 9:00pm |
| 2:00pm | 10:00pm |
| 3:00pm | 11:00pm |
| 4:00pm | 12:00am |
| 5:00pm | 1:00am |
| 6:00pm | 2:00am |
| 7:00pm | 3:00am |
| 8:00pm | 4:00am |
| 9:00pm | 5:00am |
| 10:00pm | 6:00am |
| 11:00pm | 7:00am |
| 00:00 | 08:00 |
| 01:00 | 09:00 |
| 02:00 | 10:00 |
| 03:00 | 11:00 |
| 04:00 | 12:00 |
| 05:00 | 13:00 |
| 06:00 | 14:00 |
| 07:00 | 15:00 |
| 08:00 | 16:00 |
| 09:00 | 17:00 |
| 10:00 | 18:00 |
| 11:00 | 19:00 |
| 12:00 | 20:00 |
| 13:00 | 21:00 |
| 14:00 | 22:00 |
| 15:00 | 23:00 |
| 16:00 | 00:00 |
| 17:00 | 01:00 |
| 18:00 | 02:00 |
| 19:00 | 03:00 |
| 20:00 | 04:00 |
| 21:00 | 05:00 |
| 22:00 | 06:00 |
| 23:00 | 07:00 |
British Summer Time
Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries using this time zone: Britain (UK), Guernsey, Isle of Man, Jersey
Principal Cities: The largest city in the BST time zone is London in United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Liverpool, Saint Helier.
Daylight Saving: British Summer Time (BST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Greenwich Mean Time (GMT).
Start: British Summer Time (BST) started on Sunday, March 29, 2026 at 1:00 am01:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 2:00 am02:00. Daylight saving starts annually on the last Sunday of March.
End: British Summer Time (BST) ends on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.
BST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
- Alpha - Military abbreviation for BST
- A - short form of 'Alpha'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
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 shi, Nagoya shi, 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.
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