ACST to IST Time Converter
IST is 5 hours behind ACST right now. 9:00 AM in ACST is 4:00 AM in IST.
Time now: ACST and IST
IST is 5 hours behind ACST right now. The gap is not fixed: it is 5 hours at some times of the year and 4 hours at others, because at least one of them changes its clocks for daylight saving time.
ACST to IST conversion table
Every hour of the day, using today's time difference.
| ACST | IST |
|---|---|
| 12:00 AM | 7:00 PMprevious day |
| 1:00 AM | 8:00 PMprevious day |
| 2:00 AM | 9:00 PMprevious day |
| 3:00 AM | 10:00 PMprevious day |
| 4:00 AM | 11:00 PMprevious day |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
ACST to IST time chart: 11 AM, 9 AM and every half hour
The gap changes during the year because Australian Central Time changes its clocks, so both versions are shown: ACST (for example in July) and ACDT (for example in January).
| ACST | IST on ACST (July) | IST on ACDT (January) |
|---|---|---|
| 6:00 AM | 2:00 AM | 1:00 AM |
| 6:30 AM | 2:30 AM | 1:30 AM |
| 7:00 AM | 3:00 AM | 2:00 AM |
| 7:30 AM | 3:30 AM | 2:30 AM |
| 8:00 AM | 4:00 AM | 3:00 AM |
| 8:30 AM | 4:30 AM | 3:30 AM |
| 9:00 AM | 5:00 AM | 4:00 AM |
| 9:30 AM | 5:30 AM | 4:30 AM |
| 10:00 AM | 6:00 AM | 5:00 AM |
| 10:30 AM | 6:30 AM | 5:30 AM |
| 11:00 AM | 7:00 AM | 6:00 AM |
| 11:30 AM | 7:30 AM | 6:30 AM |
| 12:00 PM | 8:00 AM | 7:00 AM |
| 12:30 PM | 8:30 AM | 7:30 AM |
| 1:00 PM | 9:00 AM | 8:00 AM |
| 1:30 PM | 9:30 AM | 8:30 AM |
| 2:00 PM | 10:00 AM | 9:00 AM |
| 2:30 PM | 10:30 AM | 9:30 AM |
| 3:00 PM | 11:00 AM | 10:00 AM |
| 3:30 PM | 11:30 AM | 10:30 AM |
| 4:00 PM | 12:00 PM | 11:00 AM |
| 4:30 PM | 12:30 PM | 11:30 AM |
| 5:00 PM | 1:00 PM | 12:00 PM |
| 5:30 PM | 1:30 PM | 12:30 PM |
| 6:00 PM | 2:00 PM | 1:00 PM |
| 6:30 PM | 2:30 PM | 1:30 PM |
| 7:00 PM | 3:00 PM | 2:00 PM |
| 7:30 PM | 3:30 PM | 2:30 PM |
| 8:00 PM | 4:00 PM | 3:00 PM |
| 8:30 PM | 4:30 PM | 3:30 PM |
| 9:00 PM | 5:00 PM | 4:00 PM |
| 9:30 PM | 5:30 PM | 4:30 PM |
| 10:00 PM | 6:00 PM | 5:00 PM |
| 10:30 PM | 6:30 PM | 5:30 PM |
| 11:00 PM | 7:00 PM | 6:00 PM |
| 11:30 PM | 7:30 PM | 6:30 PM |
Best time to meet between ACST and IST
Working hours overlap (9 AM – 6 PM in both places):
- 2:00 PM – 6:00 PM ACST = 9:00 AM – 1:00 PM IST
The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.
Does the time difference between ACST and IST change?
Yes. Right now IST is 5 hours behind ACST. These are the dates in the next 12 months when the gap changes:
- Sunday, 4 April 2027: ACST moves its clocks back. IST is 4 hours behind ACST from then (it was 5 hours before).
- Sunday, 3 October 2027: ACST moves its clocks forward. IST is 5 hours behind ACST from then (it was 4 hours before).
Office hours in each other's time
- 9 AM to 6 PM in ACST is 4:00 AM to 1:00 PM in IST.
- 9 AM to 6 PM in IST is 2:00 PM to 11:00 PM in ACST.
Based on today's clock settings.
Frequently asked questions
What is the time difference between ACST and IST?
IST is 5 hours behind ACST right now. The gap is not fixed: it is 5 hours at some times of the year and 4 hours at others, because at least one of them changes its clocks for daylight saving time.
How do I convert ACST to IST?
Subtract 5 hours from the ACST time to get the IST time (at today's difference). 9:00 AM in ACST is 4:00 AM in IST. Or use the converter above and pick any date and time.
What is the current time in IST?
It is 5:28 AM in IST on Tuesday, November 10 (the converter above shows it live). At the same moment it is 10:28 AM in ACST.
Does the time difference between ACST and IST change during the year?
Yes. Right now IST is 5 hours behind ACST. Over the next 12 months the gap changes 2 times: Sunday, 4 April 2027: ACST moves its clocks back. IST is 4 hours behind ACST from then (it was 5 hours before). Sunday, 3 October 2027: ACST moves its clocks forward. IST is 5 hours behind ACST from then (it was 4 hours before).
What is 11 AM ACST in IST?
11 AM ACST is 7:00 AM IST when the clocks are on ACST (for example in July) and 6:00 AM IST on ACDT (for example in January), because Australian Central Time changes its clocks. The chart on this page lists every half hour.
What is 9 AM ACST in IST?
9 AM ACST is 5:00 AM IST when the clocks are on ACST (for example in July) and 4:00 AM IST on ACDT (for example in January), because Australian Central Time changes its clocks. The chart on this page lists every half hour.
What is the best time for a meeting between ACST and IST?
Between 9 AM and 6 PM in both places you can meet at 2:00 PM – 6:00 PM ACST = 9:00 AM – 1:00 PM IST. Check the overlap section on this page for every option.
What does IST mean?
IST here means India Standard Time (UTC+05:30). India does not use daylight saving time. (The letters IST are also used for Irish and Israel time.)