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Global ClockTime zone converter & meeting planner
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Working hours
Start
09
End
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 Seoul vs Rio de Janeiro

Seoul keeps KST (UTC+9) and Rio de Janeiro keeps UTC−3 (UTC−3) today. Rio de Janeiro is 12 hours behind Seoul; 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 Rio de Janeiro — the nearest workable window is 05:00–06:00 your time (17:00 there).

Seoul and Rio de Janeiro hour by hour, with the working-hour overlap shaded
City00:00 in Seoul01:00 in Seoul02:00 in Seoul03:00 in Seoul04:00 in Seoul05:00 in Seoul06:00 in Seoul07:00 in Seoul08:00 in Seoul09:00 in Seoul10:00 in Seoul11:00 in Seoul12:00 in Seoul13:00 in Seoul14:00 in Seoul15:00 in Seoul16:00 in Seoul17:00 in Seoul18:00 in Seoul19:00 in Seoul20:00 in Seoul21:00 in Seoul22:00 in Seoul23:00 in Seoul
Seoul——000102030405060708091011121314151617181920212223
Rio de Janeiro——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Seoul and Rio de Janeiro

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Seoul, Rio de Janeiro 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 Rio de Janeiro — the nearest workable window is 05:00–06:00 your time (17:00 there).

Where daylight saving pulls them apart

Neither Seoul nor Rio de Janeiro changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Rio de Janeiro of Seoul?

Rio de Janeiro is 12 hours behind Seoul right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Seoul and Rio de Janeiro?

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 Seoul and Rio de Janeiro change clocks on the same date?

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