IST is behind Australian Eastern Time. The difference is 4.5 hours behind AEST or 5.5 hours behind AEDT.
What is the time difference between Australia and IST?
The time difference between Australian Eastern Time and Indian Standard Time (IST) depends on whether Daylight Saving Time is in effect. During standard time (AEST), IST is 4 hours and 30 minutes behind. During daylight time (AEDT), IST is 5 hours and 30 minutes behind.