JST to UTC Converter
UTC is 9 hours behind JST all year.
UTC to JST insteadTime difference between JST and UTC
UTC is 9 hours behind JST all year.
Neither side uses daylight saving time, so the difference never changes.
JST to UTC conversion table
| JST | UTCAll year |
|---|---|
| 12 AM | 3 PM−1 day |
| 1 AM | 4 PM−1 day |
| 2 AM | 5 PM−1 day |
| 3 AM | 6 PM−1 day |
| 4 AM | 7 PM−1 day |
| 5 AM | 8 PM−1 day |
| 6 AM | 9 PM−1 day |
| 7 AM | 10 PM−1 day |
| 8 AM | 11 PM−1 day |
| 9 AM | 12 AM |
| 10 AM | 1 AM |
| 11 AM | 2 AM |
| 12 PM | 3 AM |
| 1 PM | 4 AM |
| 2 PM | 5 AM |
| 3 PM | 6 AM |
| 4 PM | 7 AM |
| 5 PM | 8 AM |
| 6 PM | 9 AM |
| 7 PM | 10 AM |
| 8 PM | 11 AM |
| 9 PM | 12 PM |
| 10 PM | 1 PM |
| 11 PM | 2 PM |
Best time to meet
A regular 9 AM – 5 PM day doesn't overlap. If one side starts early or stays late (7 AM – 9 PM), you can meet 4 PM – 9 PM JST (7 AM – 12 PM UTC).
Frequently asked questions
What time is it in UTC when it's 9 AM in JST?
12 AM. UTC is 9 hours behind JST.
How many hours is UTC behind JST?
9 hours, all year round. Neither side uses daylight saving time, so the difference never changes.
Does JST use daylight saving time?
No. Japan Standard Time stays at UTC+9 all year.
Does UTC use daylight saving time?
No. Coordinated Universal Time stays at UTC+0 all year.
When is the best time to schedule a meeting between JST and UTC?
A regular 9 AM – 5 PM day doesn't overlap. If one side starts early or stays late (7 AM – 9 PM), you can meet 4 PM – 9 PM JST (7 AM – 12 PM UTC).