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Global ClockTime zone converter & meeting planner
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Working hours
Start
09
End
18
Theme

AUTO follows the operating system. Working hours drive the green banding on every grid. All four persist on this device only.

Time in Košice vs Buenos Aires

Košice keeps CEST (UTC+2) and Buenos Aires keeps UTC−3 (UTC−3) today. Buenos Aires is 5 hours behind Košice; 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).

Košice and Buenos Aires hour by hour, with the working-hour overlap shaded
City00:00 in Košice01:00 in Košice02:00 in Košice03:00 in Košice04:00 in Košice05:00 in Košice06:00 in Košice07:00 in Košice08:00 in Košice09:00 in Košice10:00 in Košice11:00 in Košice12:00 in Košice13:00 in Košice14:00 in Košice15:00 in Košice16:00 in Košice17:00 in Košice18:00 in Košice19:00 in Košice20:00 in Košice21:00 in Košice22:00 in Košice23:00 in Košice
Košice——000102030405060708091011121314151617181920212223
Buenos Aires——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Košice 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 Košice, Buenos Aires and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

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

Where daylight saving pulls them apart

Košice 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 Košice?

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

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

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

Do Košice 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.