Time in Santiago de Cuba vs Buenos Aires

Santiago de Cuba keeps UTC−4 (UTC−4) and Buenos Aires keeps UTC−3 (UTC−3) today. Buenos Aires is 1 hour ahead of Santiago de Cuba; 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: 10:00–18:00 in Buenos Aires (09:00–17:00 your time).

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

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Best hours to call

09:00 in Santiago de Cuba

Inside working hours on both sides

10:00 in Buenos Aires

10:00 in Santiago de Cuba

Inside working hours on both sides

11:00 in Buenos Aires

11:00 in Santiago de Cuba

Inside working hours on both sides

12:00 in Buenos Aires

12:00 in Santiago de Cuba

Inside working hours on both sides

13:00 in Buenos Aires

Where daylight saving pulls them apart

Santiago de Cuba next changes on Sunday 1 November 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 Santiago de Cuba?

Buenos Aires is 1 hour ahead of Santiago de Cuba right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Santiago de Cuba and Buenos Aires?

Any hour in 09:00–17:00 Santiago de Cuba time is inside working hours in both cities.

Do Santiago de Cuba 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.