Time in Sendai vs Buenos Aires

Sendai keeps JST (UTC+9) and Buenos Aires keeps UTC−3 (UTC−3) today. Buenos Aires is 12 hours behind Sendai; the rows below read both clocks live.

The working day, side by side

The working days do not meet. there is no working-hour overlap with Buenos Aires — the nearest workable window is 05:00–06:00 your time (17:00 there).

Sendai and Buenos Aires hour by hour, with the working-hour overlap shaded
City	00:00 in Sendai	01:00 in Sendai	02:00 in Sendai	03:00 in Sendai	04:00 in Sendai	05:00 in Sendai	06:00 in Sendai	07:00 in Sendai	08:00 in Sendai	09:00 in Sendai	10:00 in Sendai	11:00 in Sendai	12:00 in Sendai	13:00 in Sendai	14:00 in Sendai	15:00 in Sendai	16:00 in Sendai	17:00 in Sendai	18:00 in Sendai	19:00 in Sendai	20:00 in Sendai	21:00 in Sendai	22:00 in Sendai	23:00 in Sendai
Sendai——	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Buenos Aires——	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 Sendai and Buenos Aires

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Sendai, Buenos Aires and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

there is no working-hour overlap with Buenos Aires — the nearest workable window is 05:00–06:00 your time (17:00 there).

Where daylight saving pulls them apart

Neither Sendai nor Buenos Aires changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Buenos Aires of Sendai?

Buenos Aires is 12 hours behind Sendai right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Sendai and Buenos Aires?

There is no hour inside working hours in both cities. 05:00–06:00 your time (17:00 there) is the cheapest compromise, and one side is taking a shoulder hour.

Do Sendai and Buenos Aires change clocks on the same date?

Neither city changes its clocks, so the gap between them never moves.