What is AEST in IST?
India Standard Time is 4 hours 30 minutes behind
Australian Eastern Time is on UTC+10:00 and India Standard Time is on UTC+5:30 right now. The gap changes during the year — see below.
- Time in Sydney
- 12:56 pm
- Time in New Delhi
- 8:26 am
- Difference
- −4:30 h
- Next clock change
- October 3, 2026
Convert a time
IST — India Standard Time
7:30 am
Wed
When the difference changes
Australian Eastern Time and India Standard Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – October 3, 2026India Standard Time is 4 hours 30 minutes behind
- October 3, 2026 – April 3, 2027India Standard Time is 5 hours 30 minutes behind
- April 3, 2027 – October 2, 2027India Standard Time is 4 hours 30 minutes behind
- October 2, 2027 – onwardsIndia Standard Time is 5 hours 30 minutes behind
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Australian Eastern Time
Clocks go forward one hour at 2am local time, becoming AEDT.
India Standard Time
India Standard Time stays on IST all year, so its offset from UTC never moves.
AEST to IST conversion table
Every hour of Wednesday, September 23, 2026, converted from Australian Eastern Time to India Standard Time. 5 of the 24 hours fall on a different calendar day in New Delhi, which is marked.
- 12:00 am AEST
- 7:30 pm IST−1 day
- 1:00 am AEST
- 8:30 pm IST−1 day
- 2:00 am AEST
- 9:30 pm IST−1 day
- 3:00 am AEST
- 10:30 pm IST−1 day
- 4:00 am AEST
- 11:30 pm IST−1 day
- 5:00 am AEST
- 12:30 am IST
- 6:00 am AEST
- 1:30 am IST
- 7:00 am AEST
- 2:30 am IST
- 8:00 am AEST
- 3:30 am IST
- 9:00 am AEST
- 4:30 am IST
- 10:00 am AEST
- 5:30 am IST
- 11:00 am AEST
- 6:30 am IST
- 12:00 pm AEST
- 7:30 am IST
- 1:00 pm AEST
- 8:30 am IST
- 2:00 pm AEST
- 9:30 am IST
- 3:00 pm AEST
- 10:30 am IST
- 4:00 pm AEST
- 11:30 am IST
- 5:00 pm AEST
- 12:30 pm IST
- 6:00 pm AEST
- 1:30 pm IST
- 7:00 pm AEST
- 2:30 pm IST
- 8:00 pm AEST
- 3:30 pm IST
- 9:00 pm AEST
- 4:30 pm IST
- 10:00 pm AEST
- 5:30 pm IST
- 11:00 pm AEST
- 6:30 pm IST
Scheduling between the two
Working hours overlap from 2:00 pm to 6:00 pm AEST, which is 9:30 am to 1:30 pm IST. Anything inside that window falls in the normal working day at both ends.
A note on IST: it can also mean Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page means India Standard Time, which is what almost all searches for IST want.
Australian Eastern Time (AEST) is used in Melbourne, Canberra and Brisbane. Queensland stays on AEST all year while the southern states move to AEDT.
India Standard Time (IST) is used in all of India and Sri Lanka, on a single UTC+5:30 offset with no daylight saving