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Global ClockTime zone converter & meeting planner
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09
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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 Casablanca vs Kolkata

Casablanca keeps UTC+1 (UTC+1) and Kolkata keeps IST (UTC+5:30) today. Kolkata is 4½ hours ahead of Casablanca; 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: 14:00–18:00 in Kolkata (09:00–13:00 your time).

Casablanca and Kolkata hour by hour, with the working-hour overlap shaded
City00:00 in Casablanca01:00 in Casablanca02:00 in Casablanca03:00 in Casablanca04:00 in Casablanca05:00 in Casablanca06:00 in Casablanca07:00 in Casablanca08:00 in Casablanca09:00 in Casablanca10:00 in Casablanca11:00 in Casablanca12:00 in Casablanca13:00 in Casablanca14:00 in Casablanca15:00 in Casablanca16:00 in Casablanca17:00 in Casablanca18:00 in Casablanca19:00 in Casablanca20:00 in Casablanca21:00 in Casablanca22:00 in Casablanca23:00 in Casablanca
Casablanca——000102030405060708091011121314151617181920212223
Kolkata——000102030405060708091011121314151617181920212223
  • Working hours
  • Shoulder
  • Night
  • Overlap

Do more with Casablanca and Kolkata

Open in the PlannerAdd more cities, find a meeting time that works for everyone, then share it as a link.Open in Watch ViewKeep Casablanca, Kolkata and other cities on screen as live clocks, under an animated sky and sun.

Best hours to call

09:00 in Casablanca
Inside working hours on both sides
14:00 in Kolkata
10:00 in Casablanca
Inside working hours on both sides
15:00 in Kolkata
11:00 in Casablanca
Inside working hours on both sides
16:00 in Kolkata
12:00 in Casablanca
Inside working hours on both sides
17:00 in Kolkata

Where daylight saving pulls them apart

Casablanca next changes on Sunday 20 September 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 Kolkata of Casablanca?

Kolkata is 4½ hours ahead of Casablanca right now. The gap is not fixed: it moves whenever either side changes its clocks.

What is the best time to call between Casablanca and Kolkata?

Any hour in 09:00–13:00 Casablanca time is inside working hours in both cities.

Do Casablanca and Kolkata 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.