MeetingTimePro

AEST to IST converter

Australian Eastern Time to India Standard Time. IST is 5 h 30 min behind of AEST in January and 4 h 30 min behind in July.

From

AEST · Sydney GMT+10 · UTC+10

  • IST · KolkataUTC+5:30 · 4 h 30 min behind
    04:30Mon, Sep 28
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The gap between AEST and IST

2026AEST clocksIST clocksDifference
JanuaryGMT+11 UTC+11GMT+5:30 UTC+5:305 h 30 min behind
JulyGMT+10 UTC+10GMT+5:30 UTC+5:304 h 30 min behind

The gap changes on: Sun, April 5, 2026 (4 h 30 min behind); Sun, October 4, 2026 (5 h 30 min behind); Sun, April 4, 2027 (4 h 30 min behind); Sun, October 3, 2027 (5 h 30 min behind).

Convert the other way: IST to AEST · Plan a meeting across more places

AEST to IST time table

Every hour of the AEST day and the matching IST time, for a mid-January and a mid-July date.

AESTIST · JanuaryIST · July
12:00 AM6:30 PM (−1 day)7:30 PM (−1 day)
1:00 AM7:30 PM (−1 day)8:30 PM (−1 day)
2:00 AM8:30 PM (−1 day)9:30 PM (−1 day)
3:00 AM9:30 PM (−1 day)10:30 PM (−1 day)
4:00 AM10:30 PM (−1 day)11:30 PM (−1 day)
5:00 AM11:30 PM (−1 day)12:30 AM
6:00 AM12:30 AM1:30 AM
7:00 AM1:30 AM2:30 AM
8:00 AM2:30 AM3:30 AM
9:00 AM3:30 AM4:30 AM
10:00 AM4:30 AM5:30 AM
11:00 AM5:30 AM6:30 AM
12:00 PM6:30 AM7:30 AM
1:00 PM7:30 AM8:30 AM
2:00 PM8:30 AM9:30 AM
3:00 PM9:30 AM10:30 AM
4:00 PM10:30 AM11:30 AM
5:00 PM11:30 AM12:30 PM
6:00 PM12:30 PM1:30 PM
7:00 PM1:30 PM2:30 PM
8:00 PM2:30 PM3:30 PM
9:00 PM3:30 PM4:30 PM
10:00 PM4:30 PM5:30 PM
11:00 PM5:30 PM6:30 PM

About these two clocks

AEST — Australian Eastern Time. Used in Sydney, Melbourne, Canberra (Brisbane stays on AEST all year). AEST is the winter name; from early October to early April Sydney clocks run on AEDT (UTC+11). Southern-hemisphere summer means the switch happens in the opposite months to the US and Europe.

IST — India Standard Time. Used in all of India — Mumbai, Delhi, Bengaluru. India does not use daylight saving time, so IST is UTC+5:30 all year.

All figures on this page come from the IANA time zone database (the same data your phone and laptop use), evaluated for the date in question. Abbreviations are ambiguous — “IST” also means Irish or Israel Standard Time, and “CST” is China Standard Time in Asia — so this page uses Australia/Sydney and Asia/Kolkata explicitly.

Questions people ask

How many hours ahead or behind is IST compared with AEST?

IST is 5 h 30 min behind of AEST in January and 4 h 30 min behind in July. The gap moves because daylight saving time starts and ends on different dates (or not at all) in the two places.

What is 9 am AEST in IST?

On a January date, 9:00 am AEST is 3:30 AM IST. In July it is 4:30 AM. Use the converter above for any other date.

Which cities use AEST?

Australian Eastern Time (AEST) is used in Sydney, Melbourne, Canberra (Brisbane stays on AEST all year). AEST is the winter name; from early October to early April Sydney clocks run on AEDT (UTC+11). Southern-hemisphere summer means the switch happens in the opposite months to the US and Europe.

Which cities use IST?

India Standard Time (IST) is used in all of India — Mumbai, Delhi, Bengaluru. India does not use daylight saving time, so IST is UTC+5:30 all year.

When is a good time for a AEST–IST call?

Look for the hours where both columns in the table fall between about 8 am and 6 pm. If none exist, the meeting planner on our home page shows the least-bad options and lets you share a link that converts for every attendee.

Related conversions

EST to ISTUTC to ISTCST to ISTPST to ISTCET to ISTGMT to ISTBST to ISTSGT to ISTJST to ISTAEST to EST