Kolkata, India Sydney, Australia
Compare time between Kolkata and Sydney
Frequently Asked Questions
Kolkata is in the IST timezone (UTC+5:30) and Sydney is in the AEST timezone (UTC+10). The time difference between them is 4h 30m.
Use the timeline above to find overlapping business hours between Kolkata and Sydney. The "Best time to meet" card highlights the window where both cities are within working hours (9 AM – 6 PM local time).
Sydney observes Daylight Saving Time, while Kolkata does not. When DST is active in Sydney, the time difference changes by 1 hour.
Click the pencil icon next to the Kolkata clock and type any time. The Sydney clock will update instantly, showing the exact corresponding time. You can also pick a date to account for DST changes.