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IST to AEST converter

Convert Indian Standard Time to Australian Eastern Time. Sydney is 5.5 hours ahead of India in summer (AEDT) and 4.5 hours ahead in winter (AEST).

From
India
To
Sydney
Live
IndiaIST
9:00 AM
 
Working hours
SydneyAEST
2:30 PM
 
Working hours

Sydney is 5 hours 30 minutes ahead of India (IST vs AEST).

Need a time that works for three or more people or cities? Plan a meeting →
Gap
5 hours 30 minutes
Sydney ahead of India today
Working hours overlap
9:00 AM–11:30 AM IST
2:30 PM–5:00 PM in Sydney; both sides in a 9-to-5 day
Next gap change
Apr 4, 2027
The gap becomes 4 hours 30 minutes (Sydney clocks go back)
9:00 AM IST
2:30 PM AEST
Sydney is 5 hours 30 minutes ahead of India, as of Nov 6, 2026

India and Australia in practice

India and eastern Australia are close enough that the working days overlap. When Delhi is at 9 AM, Sydney is at 2:30 PM in Australian summer and 1:30 PM in winter, so most of the Indian morning is the Australian afternoon.

India never changes its clocks, so the gap depends entirely on Australia. In the Australian summer, from October to April, Sydney is on AEDT and the gap is 5 hours 30 minutes. In the rest of the year it is 4 hours 30 minutes.

Between the two countries the main concern is the half-hour offset.

Teams with a Sydney client

Indian delivery teams usually work the morning to accommodate the Australian afternoon.

  • 10:00 AM IST is 3:30 PM AEDT or 2:30 PM AEST
  • 11:30 AM IST is 5:00 PM AEDT
  • 4:30 AM IST is 10:00 AM AEDT

Starting at 5:30 AM IST puts an Indian engineer at 11:00 AM in Sydney, the middle of the Australian morning.

Students and migration

Many Indian students and workers in Australia call home in the Australian evening.

  • 7:00 PM AEDT is 1:30 PM IST
  • 9:00 PM AEST is 4:30 PM IST
  • 8:00 AM AEDT is 2:30 AM IST

The best family call time is the Indian afternoon and the Australian evening.

Cricket

India and Australia play each other often, and match times are given in both zones.

  • A 2:30 PM IST start is 8:00 PM AEDT
  • A day-night test at 2:00 PM AEDT starts at 8:30 AM IST
  • A T20 at 7:00 PM AEST starts at 2:30 PM IST

Check which Australian state hosts: Perth is 3 hours behind Sydney.

Deadlines in Australian time

An Australian deadline of 5:00 PM AEDT is 11:30 AM IST. A deadline at midnight AEDT is 6:30 PM IST the previous day, so Indian applicants lose most of the final day.

An Indian deadline of 5:00 PM IST is 10:30 PM AEDT (or 9:30 PM AEST). Sydney colleagues usually treat it as an after-hours deadline and read the result the next morning.

Why the gap moves by an hour

India does not use daylight saving. Sydney and Melbourne move to AEDT on the first Sunday of October and back to AEST on the first Sunday of April. As a result, the gap is 5.5 hours in the Australian summer and 4.5 hours in the Australian winter.

Dates for 2026–27. Calculated from the IANA time zone database on Nov 6, 2026: today Sydney is 5 hours 30 minutes ahead of India. In northern winter the gap is 5 hours 30 minutes, in northern summer 4 hours 30 minutes. The clock changes ahead are:
  • Apr 4, 2027: Sydney moves to AEST (UTC+10); the gap becomes 4 hours 30 minutes
  • Oct 3, 2027: Sydney moves to AEDT (UTC+11); the gap becomes 5 hours 30 minutes

Queensland stays on AEST all year, and so does Brisbane. If your contact is in Queensland, the gap to India is 4.5 hours all year; for Perth in Western Australia it is 2.5 hours.

India to Sydney, every hour

Times are for Nov 6, 2026, when Sydney is 5 hours 30 minutes ahead of India. The gap changes on the dates listed above. Green rows are the hours when both places are inside a 9-to-5 day.

India (IST)SydneyAEST, +5.5 hrs
12:00 AM (midnight)5:30 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 PM (noon)5:30 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

“next day” and “previous day” mean Sydney is on a different calendar date from India.

Quick answers

What time is 9 AM IST in Sydney?

2:30 PM AEDT from October to April, and 1:30 PM AEST for the rest of the year.

How many hours ahead is Australia of India?

Sydney is 5.5 hours ahead during daylight saving and 4.5 hours ahead otherwise.

What is the best time to call Sydney from India?

Between 9:30 AM and 12:30 PM IST, when it is mid-afternoon in Sydney.

Does India have daylight saving?

No. India stays on IST all year.

Is Perth the same as Sydney?

No. Perth is 2 hours behind Sydney in winter and 3 hours behind in summer.