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Global ClockTime zone converter & meeting planner
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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 Seongnam-si vs Buenos Aires

Seongnam-si keeps KST (UTC+9) and Buenos Aires keeps UTC−3 (UTC−3) today. Buenos Aires is 12 hours behind Seongnam-si; 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).

Seongnam-si and Buenos Aires hour by hour, with the working-hour overlap shaded
City00:00 in Seongnam-si01:00 in Seongnam-si02:00 in Seongnam-si03:00 in Seongnam-si04:00 in Seongnam-si05:00 in Seongnam-si06:00 in Seongnam-si07:00 in Seongnam-si08:00 in Seongnam-si09:00 in Seongnam-si10:00 in Seongnam-si11:00 in Seongnam-si12:00 in Seongnam-si13:00 in Seongnam-si14:00 in Seongnam-si15:00 in Seongnam-si16:00 in Seongnam-si17:00 in Seongnam-si18:00 in Seongnam-si19:00 in Seongnam-si20:00 in Seongnam-si21:00 in Seongnam-si22:00 in Seongnam-si23:00 in Seongnam-si
Seongnam-si——000102030405060708091011121314151617181920212223
Buenos Aires——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Seongnam-si 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 Seongnam-si, 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 Seongnam-si 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 Seongnam-si?

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

What is the best time to call between Seongnam-si 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 Seongnam-si and Buenos Aires change clocks on the same date?

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