BST to JST Time Converter
About this conversion
Japan Standard Time (UTC+9) is eight hours ahead of BST. Since Japan does not use daylight saving, the gap is always eight hours in the UK summer.
When the time difference changes
Both sides keep a fixed offset, so the gap does not change in the next two years.
Best time to call or meet
BST and JST have no shared 09:00 to 17:00 working hours at present.
Common times
- 06:00 BST = 14:00 JST
- 09:00 BST = 17:00 JST
- 12:00 BST = 20:00 JST
- 15:00 BST = 23:00 JST
- 17:00 BST = 01:00 JST (next day)
- 20:00 BST = 04:00 JST (next day)
BST to JST hour-by-hour table
Highlighted rows fall within 09:00 to 17:00 on both sides.
| BST | JST |
|---|---|
| 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 (next day) |
| 17:00 | 01:00 (next day) |
| 18:00 | 02:00 (next day) |
| 19:00 | 03:00 (next day) |
| 20:00 | 04:00 (next day) |
| 21:00 | 05:00 (next day) |
| 22:00 | 06:00 (next day) |
| 23:00 | 07:00 (next day) |
Related conversions
Clock change guides
- What Is Daylight Saving Time (DST)? A Plain-English GuideWhat daylight saving time is, how it works in the UK, Europe and the US, why it exists, its history, who uses it and the argument over scrapping it.
- Why Do the Clocks Go Back in October? The Real ReasonThe clocks go back in autumn to return the UK to GMT, so winter mornings are lighter. The history, the rule, what time it happens and what changes for you.
- When Do the Clocks Go Forward Again After Going Back?When the UK clocks go forward again after the autumn change, how long the UK stays on GMT, when evenings get lighter and how to remember to reset your clocks.
Frequently asked questions
What is 15:00 BST in JST?
15:00 BST is 23:00 JST at the moment. The answer can change by an hour when either side changes its clocks.
What are the shared working hours for BST and JST?
BST and JST have no shared 09:00 to 17:00 working hours at present.
When does the BST to JST time difference change?
It does not change in the next two years.