IST to ACST Converter
Australian Central Standard Time · Adelaide, Darwin
Also convert in reverse: ACST to IST →
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IST to ACST Conversion Table
Common IST times converted to Australian Central Standard Time
| IST (UTC+05:30) | ACST (UTC+09:30) | Note |
|---|---|---|
| 12:00 AM (midnight) | 4:00 AM | |
| 6:00 AM | 10:00 AM | |
| 9:00 AM | 1:00 PM | |
| 12:00 PM (noon) | 4:00 PM | |
| 3:00 PM | 7:00 PM | |
| 6:00 PM | 10:00 PM | |
| 9:00 PM | 1:00 AM | +1 day |
| 11:30 PM | 3:30 AM | +1 day |
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About Australian Central Standard Time
How to convert IST to ACST
Indian Standard Time (IST) is UTC+5:30. Australian Central Standard Time is UTC+09:30. To convert IST to ACST, add 4 hours to your IST time.
For example, 12:00 PM IST = 4:00 PM ACST .
Time Difference: India (IST) and Australia
Indian Standard Time (IST) is UTC+5:30. Australian Central Standard Time is UTC+09:30, making the difference IST +4 hrs. India does not observe Daylight Saving Time — IST stays fixed at UTC+5:30 year-round. If Australia observes DST, the offset between IST and ACST changes by 1 hour during the DST period (typically spring–autumn in the Northern Hemisphere).
⏰ Best overlap: 9:00 IST = 1:00 PM ACST
Common IST Times in ACST
| India (IST) | Australia — ACST | Day |
|---|---|---|
| 9:00 AM IST (India morning) | 1:00 PM ACST | same day |
| 12:00 PM IST (India noon) | 4:00 PM ACST | same day |
| 3:00 PM IST (India afternoon) | 7:00 PM ACST | same day |
| 6:00 PM IST (India evening) | 10:00 PM ACST | same day |
| 9:00 PM IST (India night) | 1:00 AM ACST | next day |
Convert ACST times to Indian Standard Time: ACST to IST Converter →
India–Australia Work Hour Overlap
Find the best meeting windows between India (IST) and Australia — including shared business hours, DST shifts, and daily overlap charts.
View India–Australia Overlap →