JST to GMT Converter
Convert Japan Standard Time (JST) to Greenwich Mean Time (GMT).
Right now, Greenwich Mean Time (BST) is 8 hours behind Japan Standard Time (JST). (JST is UTC+9, BST is UTC+1.)
Common JST → GMT times
JST to GMT conversion table
| Japan Standard Time (JST) | Greenwich Mean Time (GMT) |
|---|---|
| 12:00 AM | 4:00 PM (prev. day) |
| 1:00 AM | 5:00 PM (prev. day) |
| 2:00 AM | 6:00 PM (prev. day) |
| 3:00 AM | 7:00 PM (prev. day) |
| 4:00 AM | 8:00 PM (prev. day) |
| 5:00 AM | 9:00 PM (prev. day) |
| 6:00 AM | 10:00 PM (prev. day) |
| 7:00 AM | 11:00 PM (prev. day) |
| 8:00 AM | 12:00 AM |
| 9:00 AM | 1:00 AM |
| 10:00 AM | 2:00 AM |
| 11:00 AM | 3:00 AM |
| 12:00 PM | 4:00 AM |
| 1:00 PM | 5:00 AM |
| 2:00 PM | 6:00 AM |
| 3:00 PM | 7:00 AM |
| 4:00 PM | 8:00 AM |
| 5:00 PM | 9:00 AM |
| 6:00 PM | 10:00 AM |
| 7:00 PM | 11:00 AM |
| 8:00 PM | 12:00 PM |
| 9:00 PM | 1:00 PM |
| 10:00 PM | 2:00 PM |
| 11:00 PM | 3:00 PM |
Times reflect the current date and update automatically for daylight saving time.
Converting Japan Standard Time to Greenwich Mean Time
Japan Standard Time (JST) covers Tokyo, Osaka, while Greenwich Mean Time (GMT) covers London, Dublin, Lisbon. The current offset between them is 8 hours, with GMT behind JST. Because at least one of these zones observes daylight saving time, the exact difference can shift by an hour at certain times of year — this page recalculates automatically so it is always current.
Frequently asked questions
What is the time difference between JST and GMT?
GMT (Greenwich Mean Time) is currently 8 hours behind JST (Japan Standard Time).
Is GMT ahead of or behind JST?
GMT is 8 hours behind JST as of the current date.
What is 9:00 AM JST in GMT?
9:00 AM JST is 1:00 AM in GMT.
Does Japan Standard Time (JST) observe daylight saving time?
No. Japan Standard Time stays on JST year-round, so its offset does not change with the seasons.