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Time Difference: Kolkata to Sydney

🇮🇳KolkataUTC+5:30
vs
🇦🇺SydneyUTC+10
🇮🇳
Kolkata, India
Fri, May 29
🇦🇺
Sydney, Australia
Fri, May 29

Click a time to convert

Time Difference
4 hours 30 minutes
Sydney is 4 hours 30 minutes ahead of Kolkata

Kolkata vs Sydney timezone guide

Kolkata (India) uses the Asia/Kolkata timezone at UTC+5:30, while Sydney (Australia) uses Australia/Sydney at UTC+10. This means Sydney is 4 hours 30 minutes ahead of Kolkata (based on standard offsets — the live difference above accounts for daylight saving time).

Best meeting times between Kolkata and Sydney

Standard 9-to-5 working hours overlap by 3.5 hours per day. The shared window is 9am12:30pm in Kolkata, which is 1:30pm5pm in Sydney. Schedule recurring meetings inside that window and both teams stay inside standard working hours.

Hour-by-hour planner

KolkataSydneyStatus
6am10:30amOne side outside 9-to-5 but still awake
7am11:30amOne side outside 9-to-5 but still awake
8am12:30pmOne side outside 9-to-5 but still awake
9am1:30pmBoth at work — ideal meeting time
10am2:30pmBoth at work — ideal meeting time
11am3:30pmBoth at work — ideal meeting time
12pm4:30pmBoth at work — ideal meeting time
1pm5:30pmOne side outside 9-to-5 but still awake
2pm6:30pmOne side outside 9-to-5 but still awake
3pm7:30pmOne side outside 9-to-5 but still awake
4pm8:30pmOne side outside 9-to-5 but still awake
5pm9:30pmKolkata evening, Sydney evening
6pm10:30pmKolkata evening, Sydney late evening
7pm11:30pmKolkata evening, Sydney late evening
8pm12:30amKolkata evening, Sydney asleep
9pm1:30amKolkata evening, Sydney asleep
10pm2:30amKolkata late evening, Sydney asleep

Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.

Daylight saving time between Kolkata and Sydney

Sydney observes daylight saving time, but Kolkata does not. That means the difference between the two cities changes seasonally — by one hour, around Sydney's transition dates.

  • Jan 1 Apr 4Kolkata is 5h 30m behind Sydney
  • Apr 4 Oct 3Kolkata is 4h 30m behind Sydney
  • Oct 3 Jan 1Kolkata is 5h 30m behind Sydney

Distance between Kolkata and Sydney

Great-circle distance
9,138 km
Direct flight time
~11h 45m

Kolkata and Sydney are 9,138 km apart along the great-circle route. A direct flight takes roughly ~11h 45m, depending on aircraft type, winds, and routing.

Frequently asked questions

What is the time difference between Kolkata and Sydney?
The current time difference is 4 hours 30 minutes. Kolkata is currently 4 hours 30 minutes behind Sydney.
Is Kolkata ahead of Sydney?
No. Kolkata is currently 4 hours 30 minutes behind Sydney.
What time is it in Sydney when it's 9 AM in Kolkata?
When it's 9 AM in Kolkata, it's 1:30pm in Sydney.
When is the best time to schedule a meeting between Kolkata and Sydney?
The best window is 9am–12:30pm in Kolkata, which is 1:30pm–5pm in Sydney. That's 3.5 hours where both teams are inside standard 9-to-5 working hours.
Do Kolkata and Sydney observe daylight saving time?
Sydney observes daylight saving time, but Kolkata does not — the difference between the two cities changes by one hour around the DST transition dates.
How far apart are Kolkata and Sydney?
Kolkata and Sydney are 9,138 km apart along the great-circle route. A direct flight takes roughly 11 hours 45 minutes.