No overlap — one side will join outside working hours
BRT (São Paulo)
TOKYO (Tokyo)
00:00
12:00Working
01:00
13:00Working
02:00
14:00Working
03:00
15:00Working
04:00
16:00Working
05:00
17:00
06:00
18:00
07:00
19:00
08:00
20:00
09:00Working
21:00off
10:00Working
22:00off
11:00Working
23:00off
12:00Working
00:00+1doff
13:00Working
01:00+1doff
14:00Working
02:00+1doff
15:00Working
03:00+1doff
16:00Working
04:00+1doff
17:00
05:00+1d
18:00
06:00+1d
19:00
07:00+1d
20:00
08:00+1d
21:00
09:00+1dWorking
22:00
10:00+1dWorking
23:00
11:00+1dWorking
Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between brt and tokyo?
Brasilia Time (brt) is UTC-3 and TOKYO (Tokyo) (tokyo) is UTC+9. The difference between them is 12 hours.
Where is brt used?
Brasilia Time (brt) is used in Brazil and surrounding regions. The IANA timezone identifier is America/Sao_Paulo.
Where is tokyo used?
TOKYO (Tokyo) (tokyo) is used in Japan and surrounding regions. The IANA timezone identifier is Asia/Tokyo.
How do I convert brt to tokyo?
Use the interactive converter above. Drag the time slider to any brt time and the tokyo equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
BRT (São Paulo) is 12 hours behind Tokyo. When BRT (São Paulo) clocks hit noon, Tokyo reads 00:00.
BRT (São Paulo) observes America/Sao_Paulo and Tokyo observes Asia/Tokyo — a 12 hours gap between them.
Working hours overlap
When BRT (São Paulo) is in standard working hours, Tokyo is not — and vice versa. There is no mutual business window between these two locations.
Optimal meeting slots
No business hours overlap exists between BRT (São Paulo) and Tokyo. Showing the most balanced options with minimal inconvenience for both locations.
04:00 São Paulo / 16:00 Tokyo⚡ One side off-hours
⚠️ 5h before working hours in São Paulo
09:00 São Paulo / 21:00 Tokyo⚡ One side off-hours
⚠️ 5h after working hours in Tokyo
16:00 São Paulo / 04:00 Tokyo⚡ One side off-hours
⚠️ 5h before working hours in Tokyo
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Holiday calendar for both locations
⚡ Both locations have upcoming holidays, check availability before scheduling.
BRT (São Paulo)7 holidays
Jul 9Constitutionalist Revolution of 1932
Sep 7Independence Day
Oct 12Our Lady of Aparecida
Nov 2All Souls' Day
Nov 15Republic Proclamation Day
Tokyo7 holidays
Jul 20Marine Day
Aug 11Mountain Day
Sep 21Respect for the Aged Day
Sep 23Autumnal Equinox Day
Oct 12Sports Day
Working across BRT (São Paulo) and Tokyo
Working across BRT (São Paulo) (Brazil) and Tokyo (Japan) is a challenge — the 12-hour difference means no shared business hours window under a standard schedule. Flexibility from at least one side is required.
💡 Best practice for cross-timezone meetings
⚡
04:00–05:00 in BRT (São Paulo) corresponds to 16:00–17:00 in Tokyo (5h before working hours in São Paulo).
⚡
09:00–10:00 in BRT (São Paulo) corresponds to 21:00–22:00 in Tokyo (5h after working hours in Tokyo).
⚡
16:00–17:00 in BRT (São Paulo) corresponds to 04:00–05:00 in Tokyo (5h before working hours in Tokyo).
Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any BRT (São Paulo) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
