Schedule Between Kolkata and Sydney

Time in Kolkata is 4 hours 30 minutes behind

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

Sydney

Australia · +4.5h

13:30

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

Frequently Asked Questions

How much time separates Kolkata and Sydney?

Kolkata is 4 hours 30 minutes behind Sydney. Kolkata uses Asia/Kolkata and Sydney uses Australia/Sydney.

When can I schedule a call that works in both Kolkata and Sydney?

Kolkata and Sydney share 3.5 hours of business hours overlap daily. Aim for 09:00 Kolkata / 13:00 Sydney for best availability.

Is the current 4 hours 30 minutes gap between Kolkata and Sydney reliable?

Both Kolkata and Sydney are in a stable DST period. No adjustments needed for meetings scheduled in the next 7 days.

What time does Sydney show when Kolkata hits midday?

12:00 PM Kolkata time = 4:30 PM in Sydney.

How do I find out what time it is in Sydney from Kolkata?

The slider is the fastest method — move it to any Kolkata hour and watch Sydney update live. The text bar also accepts natural language input.

Are there public holidays that might interrupt meetings between Kolkata and Sydney?

Sydney observes Picnic Day on August 3. Keep this in mind when coordinating between Kolkata and Sydney.

What are the official time zones for Kolkata and Sydney?

Kolkata observes Asia/Kolkata and Sydney observes Australia/Sydney. Their UTC offset difference is 4 hours 30 minutes.

9 AM Kolkata time converts to what in Sydney?

9 AM in Kolkata → 1:30 PM in Sydney. That's within standard working hours in Sydney.

Does traveling from Kolkata to Sydney involve significant jet lag?

Traveling from Kolkata to Sydney means you lose 4 hours 30 minutes in local time. Most people adjust within a day.

How are the UTC offsets of Kolkata and Sydney calculated?

Both Kolkata (Asia/Kolkata) and Sydney (Australia/Sydney) have defined UTC offsets. The gap between those offsets is 4 hours 30 minutes.

Quick time conversions: Kolkata → Sydney

Common reference points to help you plan across the time difference.

For every 10:00 AM in Kolkata, it's simultaneously 2:30 PM in Sydney.

Is 6:00 AM a good time to call Sydney from Kolkata?—10:30 AM

5:00 PMin Kolkata→9:30 PMin Sydney

7:00 AM in Kolkata corresponds exactly to 11:30 AM in Sydney.

7:00 PMin Kolkata→11:30 PMin Sydney

What time is 3:00 PM Kolkata in Sydney?—7:30 PM

Best call times between these locations

There is a 3.5-hour daily window where both locations are in business hours. The 3 best slots are listed below.

09:00 Kolkata / 13:00 Sydney✓ Both working

10:00 Kolkata / 14:00 Sydney✓ Both working

11:00 Kolkata / 15:00 Sydney✓ Both working

Working hours defined as 09:00–17:00 local time for each location.

Time difference: Kolkata and Sydney

Kolkata is 5 hours 30 minutes behind Sydney. At noon in Kolkata, your contact in Sydney sees 16:00.

Kolkata runs on Asia/Kolkata; Sydney runs on Australia/Sydney. Together they are 4.5 hours 30 minutes apart.

Business hours comparison

Kolkata and Sydney share 3.5 hours of overlapping business hours daily — enough for real-time collaboration without anyone joining at odd hours.

00:0006:0012:0018:0024:00

Kolkata

Sydney

Overlap (3.5h)

Public holidays for both locations

Kolkata

No upcoming public holidays this year.

Sydney7 holidays

Aug 3Picnic Day

Sep 28King's Birthday

Oct 5Labour Day

Oct 5King's Birthday

Nov 3Melbourne Cup

Scheduling between Kolkata and Sydney

Kolkata (India) and Sydney (Australia) are 4.5 hours apart. With a 3.5-hour daily overlap in standard business hours, both teams can connect in real time without either side stretching beyond their normal workday.

💡 Scheduling tips for these locations

✅

If you are in Kolkata, aim for 09:00–10:00, which corresponds to 13:00–14:00 in Sydney — both teams are within working hours.

✅

If you are in Kolkata, aim for 10:00–11:00, which corresponds to 14:00–15:00 in Sydney — both teams are within working hours.

✅

If you are in Kolkata, aim for 11:00–12:00, which corresponds to 15:00–16:00 in Sydney — both teams are within working hours.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am Kolkata".

Popular Kolkata time conversions

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Kolkata ↔ Sydney

4h of business hours overlap daily (09:00–17:00)· Showing morning hours (05:00–13:00)

Kolkata

Sydney

05:00

09:30Working

06:00

10:30Working

07:00

11:30Working

08:00

12:30Working

09:00Working

13:30Working

10:00Working

14:30Working

11:00Working

15:30Working

12:00Working

16:30Working

13:00Working

17:30off

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.