Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between aedt and ist?
Australian Eastern Daylight Time (aedt) is UTC+10 and India Standard Time (ist) is UTC+5:30. The difference between them is 4.5 hours.
Where is aedt used?
Australian Eastern Daylight Time (aedt) is used in Australia and surrounding regions. The IANA timezone identifier is Australia/Sydney.
Where is ist used?
India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.
How do I convert aedt to ist?
Use the interactive converter above. Drag the time slider to any aedt time and the ist equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
AEDT (Sydney) is 4 hours 30 minutes ahead of IST (Mumbai). Midday in AEDT (Sydney) lines up with 07:00 in IST (Mumbai).
AEDT (Sydney) is in the Australia/Sydney timezone. IST (Mumbai) is in Asia/Kolkata. The difference is 4.5 hours 30 minutes.
Mutual working hours
There is a 3.5-hour window each day where both AEDT (Sydney) and IST (Mumbai) are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
AEDT (Sydney)
IST (Mumbai)
Overlap (3.5h)
When to schedule across time zones
Both AEDT (Sydney) and IST (Mumbai) are in standard hours simultaneously for 3.5h per day. 3 recommended slots shown below.
14:00 Sydney / 09:00 Mumbai✓ Both working
15:00 Sydney / 10:00 Mumbai✓ Both working
16:00 Sydney / 11:00 Mumbai✓ Both working
Based on standard 09:00–17:00 working hours in each location's local time.
Upcoming public holidays
AEDT (Sydney)7 holidays
Aug 3Picnic Day
Sep 28King's Birthday
Oct 5Labour Day
Oct 5King's Birthday
Nov 3Melbourne Cup
IST (Mumbai)
No upcoming public holidays this year.
How to work with AEDT (Sydney) and IST (Mumbai) time zones
Working across AEDT (Sydney) (Australia) and IST (Mumbai) (India) involves a 4.5-hour gap. The good news: there is a 3.5-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.
💡 How to schedule across these time zones
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14:00–15:00 in AEDT (Sydney) = 09:00–10:00 in IST (Mumbai). Both sides are in standard business hours during this window.
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15:00–16:00 in AEDT (Sydney) = 10:00–11:00 in IST (Mumbai). Both sides are in standard business hours during this window.
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16:00–17:00 in AEDT (Sydney) = 11:00–12:00 in IST (Mumbai). Both sides are in standard business hours during this window.
DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.
Use the time slider above to find the exact equivalent time for any moment in AEDT (Sydney). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.