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Global ClockTime zone converter & meeting planner
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18
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AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

Time in Buenos Aires vs Altona

Buenos Aires keeps UTC−3 (UTC−3) and Altona keeps CEST (UTC+2) today. Altona is 5 hours ahead of Buenos Aires; 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: 14:00–18:00 in Altona (09:00–13:00 your time).

Buenos Aires and Altona hour by hour, with the working-hour overlap shaded
City00:00 in Buenos Aires01:00 in Buenos Aires02:00 in Buenos Aires03:00 in Buenos Aires04:00 in Buenos Aires05:00 in Buenos Aires06:00 in Buenos Aires07:00 in Buenos Aires08:00 in Buenos Aires09:00 in Buenos Aires10:00 in Buenos Aires11:00 in Buenos Aires12:00 in Buenos Aires13:00 in Buenos Aires14:00 in Buenos Aires15:00 in Buenos Aires16:00 in Buenos Aires17:00 in Buenos Aires18:00 in Buenos Aires19:00 in Buenos Aires20:00 in Buenos Aires21:00 in Buenos Aires22:00 in Buenos Aires23:00 in Buenos Aires
Buenos Aires——000102030405060708091011121314151617181920212223
Altona——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Buenos Aires and Altona

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

Best hours to call

09:00 in Buenos Aires
Inside working hours on both sides
14:00 in Altona
10:00 in Buenos Aires
Inside working hours on both sides
15:00 in Altona
11:00 in Buenos Aires
Inside working hours on both sides
16:00 in Altona
12:00 in Buenos Aires
Inside working hours on both sides
17:00 in Altona

Where daylight saving pulls them apart

Altona 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 Altona of Buenos Aires?

Altona is 5 hours ahead of Buenos Aires right now. The gap is not fixed: it moves whenever either side changes its clocks.

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

Any hour in 09:00–13:00 Buenos Aires time is inside working hours in both cities.

Do Buenos Aires and Altona 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.