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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 Istanbul vs Bissau

Istanbul keeps UTC+3 (UTC+3) and Bissau keeps GMT (UTC+0) today. Bissau is 3 hours behind Istanbul; 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: 09:00–15:00 in Bissau (12:00–18:00 your time).

Istanbul and Bissau hour by hour, with the working-hour overlap shaded
City00:00 in Istanbul01:00 in Istanbul02:00 in Istanbul03:00 in Istanbul04:00 in Istanbul05:00 in Istanbul06:00 in Istanbul07:00 in Istanbul08:00 in Istanbul09:00 in Istanbul10:00 in Istanbul11:00 in Istanbul12:00 in Istanbul13:00 in Istanbul14:00 in Istanbul15:00 in Istanbul16:00 in Istanbul17:00 in Istanbul18:00 in Istanbul19:00 in Istanbul20:00 in Istanbul21:00 in Istanbul22:00 in Istanbul23:00 in Istanbul
Istanbul——000102030405060708091011121314151617181920212223
Bissau——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Istanbul and Bissau

Best hours to call

12:00 in Istanbul
Inside working hours on both sides
09:00 in Bissau
13:00 in Istanbul
Inside working hours on both sides
10:00 in Bissau
14:00 in Istanbul
Inside working hours on both sides
11:00 in Bissau
15:00 in Istanbul
Inside working hours on both sides
12:00 in Bissau

Where daylight saving pulls them apart

Neither Istanbul nor Bissau changes its clocks, so the gap above holds all year.

Also useful

Common questions

How many hours ahead is Bissau of Istanbul?

Bissau is 3 hours behind Istanbul right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Istanbul and Bissau?

Any hour in 12:00–18:00 Istanbul time is inside working hours in both cities.

Do Istanbul and Bissau change clocks on the same date?

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