Observatory log
São Paulo and Sendai, compared
- 01Difference now
Sendai is 12 hours ahead of São Paulo.
São Paulo: UTC−3 (UTC−3) · Sendai: JST (UTC+9)
- 02Through 2026–2027
The difference stays the same all year.
- 1 January 2026 – 31 December 2027+12 h
Difference of Sendai from São Paulo. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
Their working days never overlap.
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–10:00 in São Paulo = 21:00–22:00 in Sendai
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Mon–Thu: 21:00–22:00 in São Paulo = 09:00–10:00 in Sendai (tomorrow) · 1 h.
- 05Weekend
São Paulo: Saturday and Sunday
Sendai: Saturday and Sunday
24 hours
A day in São Paulo, in Sendai
| São Paulo | Sendai | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 12:00 | |
| 01:00 | 13:00 | |
| 02:00 | 14:00 | |
| 03:00 | 15:00 | |
| 04:00 | 16:00 | |
| 05:00 | 17:00 | |
| 06:00 | 18:00 | |
| 07:00 | 19:00 | |
| 08:00 | 20:00 | |
| 09:00 | 21:00 | |
| 10:00 | 22:00 | |
| 11:00 | 23:00 | |
| 12:00 | 00:00Tomorrow | |
| 13:00 | 01:00Tomorrow | |
| 14:00 | 02:00Tomorrow | |
| 15:00 | 03:00Tomorrow | |
| 16:00 | 04:00Tomorrow | |
| 17:00 | 05:00Tomorrow | |
| 18:00 | 06:00Tomorrow | |
| 19:00 | 07:00Tomorrow | |
| 20:00 | 08:00Tomorrow | |
| 21:00 | 09:00Tomorrow | |
| 22:00 | 10:00Tomorrow | |
| 23:00 | 11:00Tomorrow |
Working hoursEarly or eveningNightWeekend
Questions
Asked about São Paulo and Sendai
What is the time difference between São Paulo and Sendai?
Sendai is 12 hours ahead of São Paulo. The difference stays the same all year.
What is the best time for a call between São Paulo and Sendai?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 09:00–10:00 in São Paulo = 21:00–22:00 in Sendai · 1 h; Mon–Thu: 21:00–22:00 in São Paulo = 09:00–10:00 in Sendai (tomorrow) · 1 h.
When does the time difference between São Paulo and Sendai change?
It does not change in the next 12 months: São Paulo and Sendai either keep the same time all year or change their clocks on the same dates.