Kolkata, India Khartoum, Sudan

Kolkata is in the IST timezone (UTC+5:30) and Khartoum is in the CAT timezone (UTC+2). The time difference between them is 3h 30m.

Use the timeline above to find overlapping business hours between Kolkata and Khartoum. The "Best time to meet" card highlights the window where both cities are within working hours (9 AM – 6 PM local time).

Neither Kolkata nor Khartoum observes Daylight Saving Time, so the time difference remains constant throughout the year.

Click the pencil icon next to the Kolkata clock and type any time. The Khartoum clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.