Kolkata, India Bangkok, Thailand

Kolkata is in the IST timezone (UTC+5:30) and Bangkok is in the +07 timezone (UTC+7). The time difference between them is 1h 30m.

Use the timeline above to find overlapping business hours between Kolkata and Bangkok. 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 Bangkok 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 Bangkok clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.