Sydney
Mumbai
Convert AEST to IST
Australian Eastern Standard Time to India Standard Time — Mumbai is 4.5 hours behind Sydney
Quick Facts
Time Difference
-4.5 hours
AEST Full Name
Australian Eastern Standard Time
IST Full Name
India Standard Time
AEST to IST Conversion Table
Related Conversions
About AEST and IST Time Zones
AEST (Australian Eastern Standard Time) is UTC+10 and covers cities like Sydney, Melbourne, Brisbane. IST (India Standard Time) is UTC+5:30 and covers cities like Mumbai, Delhi, Bangalore.
When it's 12:00 PM (noon) in Sydney (AEST), it's 7:30 AM in Mumbai (IST). The time difference between AEST and IST is 4.5 hours — Mumbai is behind Sydney.
The best meeting window is 9:00 AM–0.5:00 PM AEST (1.5:00 PM–5:00 PM IST).
Daylight Saving Time
AEST observes Daylight Saving Time and becomes AEDT (Australian Eastern Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC+11.
During DST transitions, the time difference between AEST and IST may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Sydney and Mumbai with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between AEST and IST?
Mumbai (IST) is 4.5 hours behind Sydney (AEST). The offset is -4.5 hours.
Is IST ahead or behind AEST?
IST is 4.5 hours behind AEST. AEST is UTC+10 and IST is UTC+5:30.
When it's 12:00 PM in Sydney, what time is it in Mumbai?
When it's 12:00 PM (noon) in Sydney (AEST), it's 7:30 AM in Mumbai (IST).
When it's 5:00 PM in Sydney, what time is it in Mumbai?
When it's 5:00 PM in Sydney (AEST), it's 12:30 PM in Mumbai (IST).
Does AEST change for Daylight Saving Time?
Yes. AEST (Australian Eastern Standard Time, UTC+10) becomes AEDT (Australian Eastern Daylight Time, UTC+11) in summer, shifting clocks forward 1 hour.