Time difference between Tokyo and Buenos Aires
−12 hBuenos Aires is 12 hours behind Tokyo.
Observatory log
Tokyo and Buenos Aires, compared
- 01Difference now
Buenos Aires is 12 hours behind Tokyo.
Tokyo: JST (UTC+9) · Buenos Aires: UTC−3 (UTC−3)
- 02Through 2026–2027
The difference stays the same all year.
- 1 January 2026 – 31 December 2027−12 h
Difference of Buenos Aires from Tokyo. 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
21:00–22:00 in Tokyo = 09:00–10:00 in Buenos Aires
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Tue–Fri: 09:00–10:00 in Tokyo = 21:00–22:00 in Buenos Aires (yesterday) · 1 h.
- 05Weekend
Tokyo: Saturday and Sunday
Buenos Aires: Saturday and Sunday
24 hours
A day in Tokyo, in Buenos Aires
| Tokyo | Buenos Aires | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 12:00Yesterday | |
| 01:00 | 13:00Yesterday | |
| 02:00 | 14:00Yesterday | |
| 03:00 | 15:00Yesterday | |
| 04:00 | 16:00Yesterday | |
| 05:00 | 17:00Yesterday | |
| 06:00 | 18:00Yesterday | |
| 07:00 | 19:00Yesterday | |
| 08:00 | 20:00Yesterday | |
| 09:00 | 21:00Yesterday | |
| 10:00 | 22:00Yesterday | |
| 11:00 | 23:00Yesterday | |
| 12:00 | 00:00 | |
| 13:00 | 01:00 | |
| 14:00 | 02:00 | |
| 15:00 | 03:00 | |
| 16:00 | 04:00 | |
| 17:00 | 05:00 | |
| 18:00 | 06:00 | |
| 19:00 | 07:00 | |
| 20:00 | 08:00 | |
| 21:00 | 09:00 | |
| 22:00 | 10:00 | |
| 23:00 | 11:00 |
Working hoursEarly or eveningNightWeekend
Plan a meeting: Tokyo and Buenos Aires
More time differences with Tokyo
Questions
Asked about Tokyo and Buenos Aires
What is the time difference between Tokyo and Buenos Aires?
Buenos Aires is 12 hours behind Tokyo. The difference stays the same all year.
What is the best time for a call between Tokyo and Buenos Aires?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 21:00–22:00 in Tokyo = 09:00–10:00 in Buenos Aires · 1 h; Tue–Fri: 09:00–10:00 in Tokyo = 21:00–22:00 in Buenos Aires (yesterday) · 1 h.
When does the time difference between Tokyo and Buenos Aires change?
It does not change in the next 12 months: Tokyo and Buenos Aires either keep the same time all year or change their clocks on the same dates.