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Global ClockTime zone converter & meeting planner
SETTINGS
Clock
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 Cairo vs Rio de Janeiro

Cairo keeps EEST (UTC+3) and Rio de Janeiro keeps UTC−3 (UTC−3) today. Rio de Janeiro is 6 hours behind Cairo; 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: 09:00–12:00 in Rio de Janeiro (15:00–18:00 your time).

Cairo and Rio de Janeiro hour by hour, with the working-hour overlap shaded
City00:00 in Cairo01:00 in Cairo02:00 in Cairo03:00 in Cairo04:00 in Cairo05:00 in Cairo06:00 in Cairo07:00 in Cairo08:00 in Cairo09:00 in Cairo10:00 in Cairo11:00 in Cairo12:00 in Cairo13:00 in Cairo14:00 in Cairo15:00 in Cairo16:00 in Cairo17:00 in Cairo18:00 in Cairo19:00 in Cairo20:00 in Cairo21:00 in Cairo22:00 in Cairo23:00 in Cairo
Cairo——000102030405060708091011121314151617181920212223
Rio de Janeiro——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Cairo and Rio de Janeiro

Best hours to call

15:00 in Cairo
Inside working hours on both sides
09:00 in Rio de Janeiro
16:00 in Cairo
Inside working hours on both sides
10:00 in Rio de Janeiro
17:00 in Cairo
Inside working hours on both sides
11:00 in Rio de Janeiro

Where daylight saving pulls them apart

Cairo next changes on Thursday 29 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 Rio de Janeiro of Cairo?

Rio de Janeiro is 6 hours behind Cairo right now. The gap is not fixed: it moves whenever either side changes its clocks.

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

Any hour in 15:00–18:00 Cairo time is inside working hours in both cities.

Do Cairo and Rio de Janeiro 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.