Buenos Aires and Tokyo time difference

Tokyo is 12 hours ahead of Buenos Aires.

Plan a meeting in Buenos Aires and TokyoOpens the free planner with both cities: drag the bands to any day and time, add more cities, and share the result.

Their 09:00–17:00 work days do not overlap: 09:00 in Buenos Aires is 21:00 in Tokyo, and 17:00 in Buenos Aires is 05:00 there. A meeting needs an early start or a late finish on one side.

Hour by hour

On a usual work day (October 14, 2026). Green is 09:00–17:00 work time, dark is night (21:00–07:00).

Buenos Aires	Tokyo
00:00, Night	12:00, Work hours
01:00, Night	13:00, Work hours
02:00, Night	14:00, Work hours
03:00, Night	15:00, Work hours
04:00, Night	16:00, Work hours
05:00, Night	17:00, Off hours
06:00, Night	18:00, Off hours
07:00, Off hours	19:00, Off hours
08:00, Off hours	20:00, Off hours
09:00, Work hours	21:00, Night
10:00, Work hours	22:00, Night
11:00, Work hours	23:00, Night
12:00, Work hours	00:00next day, Night
13:00, Work hours	01:00next day, Night
14:00, Work hours	02:00next day, Night
15:00, Work hours	03:00next day, Night
16:00, Work hours	04:00next day, Night
17:00, Off hours	05:00next day, Night
18:00, Off hours	06:00next day, Night
19:00, Off hours	07:00next day, Off hours
20:00, Off hours	08:00next day, Off hours
21:00, Night	09:00next day, Work hours
22:00, Night	10:00next day, Work hours
23:00, Night	11:00next day, Work hours

Through the year

Dates	Difference
October 8, 2026–October 7, 2027	Tokyo is 12 hours ahead of Buenos Aires

Clock changes

Buenos Aires does not change its clocks.

Tokyo does not change its clocks.

Questions

What time is it in Tokyo when it is 09:00 in Buenos Aires?

On a usual day it is 21:00 in Tokyo.

Do Buenos Aires and Tokyo change their clocks on the same day?

Neither changes its clocks, so the difference stays the same all year.