Time in Sant Martí vs Buenos Aires

Sant Martí keeps CEST (UTC+2) and Buenos Aires keeps UTC−3 (UTC−3) today. Buenos Aires is 5 hours behind Sant Martí; the rows below read both clocks live.

The working day, side by side

Hours shaded in both rows are inside working hours in both cities: 09:00–13:00 in Buenos Aires (14:00–18:00 your time).

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

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Best hours to call

14:00 in Sant Martí

Inside working hours on both sides

09:00 in Buenos Aires

15:00 in Sant Martí

Inside working hours on both sides

10:00 in Buenos Aires

16:00 in Sant Martí

Inside working hours on both sides

11:00 in Buenos Aires

17:00 in Sant Martí

Inside working hours on both sides

12:00 in Buenos Aires

Where daylight saving pulls them apart

Sant Martí next changes on Sunday 25 October 2026. Between those two dates the gap between the cities is an hour different from the one shown above — which is exactly when a recurring meeting drifts. Every date we track is on the daylight saving page.

Also useful

Common questions

How many hours ahead is Buenos Aires of Sant Martí?

Buenos Aires is 5 hours behind Sant Martí right now. The gap is not fixed: it moves whenever either side changes its clocks.

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

Any hour in 14:00–18:00 Sant Martí time is inside working hours in both cities.

Do Sant Martí and Buenos Aires change clocks on the same date?

Only one of them does, so the gap between them changes twice a year even though neither city moved relative to the sun.