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India time to Sydney time

Convert Indian Standard Time (IST) to the time in Sydney (Australian Eastern Time, AEST or AEDT), with the hours that suit a call.

India now
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Sydney now
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Difference now
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Convert an exact time

The time difference

Sydney is 4 hours 30 minutes ahead of India for part of the year and 5 hours 30 minutes ahead of for the rest, because Sydney changes its clocks and India does not. India is always UTC+5:30, known as IST.

Which difference applies when

India time to Sydney time when Sydney is UTC+10

Good hours to start a call (8 am to 9 pm in both places): from 8:00 am to 4:00 pm India time. Hours that start inside office time (9 am to 6 pm) in both: 9:00 am to 1:00 pm India time.

India (IST)Sydney
12:00 am4:30 am
1:00 am5:30 am
2:00 am6:30 am
3:00 am7:30 am
4:00 am8:30 am
5:00 am9:30 am
6:00 am10:30 am
7:00 am11:30 am
8:00 am12:30 pm
9:00 am1:30 pm
10:00 am2:30 pm
11:00 am3:30 pm
12:00 pm4:30 pm
1:00 pm5:30 pm
2:00 pm6:30 pm
3:00 pm7:30 pm
4:00 pm8:30 pm
5:00 pm9:30 pm
6:00 pm10:30 pm
7:00 pm11:30 pm
8:00 pm12:30 am next day
9:00 pm1:30 am next day
10:00 pm2:30 am next day
11:00 pm3:30 am next day

India time to Sydney time when Sydney is UTC+11

Good hours to start a call (8 am to 9 pm in both places): from 8:00 am to 3:00 pm India time. Hours that start inside office time (9 am to 6 pm) in both: 9:00 am to 12:00 pm India time.

India (IST)Sydney
12:00 am5:30 am
1:00 am6:30 am
2:00 am7:30 am
3:00 am8:30 am
4:00 am9:30 am
5:00 am10:30 am
6:00 am11:30 am
7:00 am12:30 pm
8:00 am1:30 pm
9:00 am2:30 pm
10:00 am3:30 pm
11:00 am4:30 pm
12:00 pm5:30 pm
1:00 pm6:30 pm
2:00 pm7:30 pm
3:00 pm8:30 pm
4:00 pm9:30 pm
5:00 pm10:30 pm
6:00 pm11:30 pm
7:00 pm12:30 am next day
8:00 pm1:30 am next day
9:00 pm2:30 am next day
10:00 pm3:30 am next day
11:00 pm4:30 am next day

Worked examples

While Sydney is UTC+10. An office that closes at 6:00 pm in India closes when it is 10:30 pm in Sydney. A 9:00 am start in Sydney is 4:30 am in India, and its 6:00 pm finish is 1:30 pm in India. A message sent at 10:30 pm from India lands at 3:00 am the next day in Sydney.

While Sydney is UTC+11. An office that closes at 6:00 pm in India closes when it is 11:30 pm in Sydney. A 9:00 am start in Sydney is 3:30 am in India, and its 6:00 pm finish is 12:30 pm in India. A message sent at 10:30 pm from India lands at 4:00 am the next day in Sydney.

When the date is different

Sydney is ahead of India (while Sydney is UTC+10), so for 4 hours 30 minutes of every day the calendar date differs: from 7:30 pm India time until midnight, Sydney has already moved to the next day.

Sydney is ahead of India (while Sydney is UTC+11), so for 5 hours 30 minutes of every day the calendar date differs: from 6:30 pm India time until midnight, Sydney has already moved to the next day.

Why the gap is what it is

Indian Standard Time follows the sun at longitude 82.5° east. The zone that Sydney belongs to has its largest city, Sydney, at about 151.2° east. The sun crosses the sky between those two lines in about 4 hours 35 minutes. Clock time rounds that to a tidy figure: 4 hours 30 minutes or 5 hours 30 minutes. The two figures differ because every country picks a round offset that suits its whole territory, and some add summer time on top.

Rows marked in colour fall between 8 am and 9 pm in both places. Dates are from the IANA time zone database 2026f.

More

Read about time in Sydney or time in India. Other conversions from India: New York, Chicago, Denver, Los Angeles, Toronto, London, Paris, Berlin, Moscow, Dubai, Riyadh, Doha, Kuwait, Karachi, Kathmandu, Dhaka, Colombo, Singapore, Kuala Lumpur, Bangkok, Hong Kong, Shanghai, Tokyo, Seoul, Melbourne, Perth, Auckland, Johannesburg, Nairobi.