JST to BRT
JST is UTC+9 and BRT is UTC−3 today — BRT is 12 hours behind JST. Abbreviations are for reading: this page resolves JST to Asia/Tokyo and BRT to America/Sao_Paulo, which are the names that do not go ambiguous.
BRT: Brasília time, which tzdata now writes as −03.
The working day, side by side
The working days do not meet at all. Current abbreviations: JST and UTC−3.
| City | 00:00 in JST | 01:00 in JST | 02:00 in JST | 03:00 in JST | 04:00 in JST | 05:00 in JST | 06:00 in JST | 07:00 in JST | 08:00 in JST | 09:00 in JST | 10:00 in JST | 11:00 in JST | 12:00 in JST | 13:00 in JST | 14:00 in JST | 15:00 in JST | 16:00 in JST | 17:00 in JST | 18:00 in JST | 19:00 in JST | 20:00 in JST | 21:00 in JST | 22:00 in JST | 23:00 in JST |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JST—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| BRT—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
- Working hours
- Shoulder
- Night
- Overlap
Do more with JST and BRT
Common questions
What is JST in BRT?
BRT is 12 hours behind JST today: noon in JST is 00:00 in BRT.
Is JST the same all year?
JST refers to the offset used by Asia/Tokyo. Where that zone observes daylight saving, the letters change with it, which is why this site stores the identifier and not the abbreviation.
When can JST and BRT meet?
They do not overlap during working hours. 05:00–06:00 your time (17:00 there) is the cheapest compromise.