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IST to ACST Time Converter

ACST is 5 hours ahead of IST right now. 9:00 AM in IST is 2:00 PM in ACST.

Time now: IST and ACST

🌐 India Standard Time (IST)5:28 AMTuesday, November 10 · UTC+05:30
🌐 Australian Central Time10:28 AMTuesday, November 10 · UTC+10:30

ACST is 5 hours ahead of IST right now. The gap is not fixed: it is 4 hours at some times of the year and 5 hours at others, because at least one of them changes its clocks for daylight saving time.

IST to ACST conversion table

Every hour of the day, using today's time difference.

ISTACST
12:00 AM5:00 AM
1:00 AM6:00 AM
2:00 AM7:00 AM
3:00 AM8:00 AM
4:00 AM9:00 AM
5:00 AM10:00 AM
6:00 AM11:00 AM
7:00 AM12:00 PM
8:00 AM1:00 PM
9:00 AM2:00 PM
10:00 AM3:00 PM
11:00 AM4:00 PM
12:00 PM5:00 PM
1:00 PM6:00 PM
2:00 PM7:00 PM
3:00 PM8:00 PM
4:00 PM9:00 PM
5:00 PM10:00 PM
6:00 PM11:00 PM
7:00 PM12:00 AMnext day
8:00 PM1:00 AMnext day
9:00 PM2:00 AMnext day
10:00 PM3:00 AMnext day
11:00 PM4:00 AMnext day

IST to ACST time chart: 6 PM, 7:30 PM 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).

ISTACST on ACST (July)ACST on ACDT (January)
6:00 AM10:00 AM11:00 AM
6:30 AM10:30 AM11:30 AM
7:00 AM11:00 AM12:00 PM
7:30 AM11:30 AM12:30 PM
8:00 AM12:00 PM1:00 PM
8:30 AM12:30 PM1:30 PM
9:00 AM1:00 PM2:00 PM
9:30 AM1:30 PM2:30 PM
10:00 AM2:00 PM3:00 PM
10:30 AM2:30 PM3:30 PM
11:00 AM3:00 PM4:00 PM
11:30 AM3:30 PM4:30 PM
12:00 PM4:00 PM5:00 PM
12:30 PM4:30 PM5:30 PM
1:00 PM5:00 PM6:00 PM
1:30 PM5:30 PM6:30 PM
2:00 PM6:00 PM7:00 PM
2:30 PM6:30 PM7:30 PM
3:00 PM7:00 PM8:00 PM
3:30 PM7:30 PM8:30 PM
4:00 PM8:00 PM9:00 PM
4:30 PM8:30 PM9:30 PM
5:00 PM9:00 PM10:00 PM
5:30 PM9:30 PM10:30 PM
6:00 PM10:00 PM11:00 PM
6:30 PM10:30 PM11:30 PM
7:00 PM11:00 PM12:00 AM (next day)
7:30 PM11:30 PM12:30 AM (next day)
8:00 PM12:00 AM (next day)1:00 AM (next day)
8:30 PM12:30 AM (next day)1:30 AM (next day)
9:00 PM1:00 AM (next day)2:00 AM (next day)
9:30 PM1:30 AM (next day)2:30 AM (next day)
10:00 PM2:00 AM (next day)3:00 AM (next day)
10:30 PM2:30 AM (next day)3:30 AM (next day)
11:00 PM3:00 AM (next day)4:00 AM (next day)
11:30 PM3:30 AM (next day)4:30 AM (next day)

Best time to meet between IST and ACST

Working hours overlap (9 AM – 6 PM in both places):

  • 9:00 AM – 1:00 PM IST = 2:00 PM – 6:00 PM ACST

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 IST and ACST change?

Yes. Right now ACST is 5 hours ahead of IST. These are the dates in the next 12 months when the gap changes:

  • Sunday, 4 April 2027: ACST moves its clocks back. ACST is 4 hours ahead of IST from then (it was 5 hours before).
  • Sunday, 3 October 2027: ACST moves its clocks forward. ACST is 5 hours ahead of IST from then (it was 4 hours before).

Office hours in each other's time

  • 9 AM to 6 PM in IST is 2:00 PM to 11:00 PM in ACST.
  • 9 AM to 6 PM in ACST is 4:00 AM to 1:00 PM in IST.

Based on today's clock settings.

Frequently asked questions

What is the time difference between IST and ACST?

ACST is 5 hours ahead of IST right now. The gap is not fixed: it is 4 hours at some times of the year and 5 hours at others, because at least one of them changes its clocks for daylight saving time.

How do I convert IST to ACST?

Add 5 hours to the IST time to get the ACST time (at today's difference). 9:00 AM in IST is 2:00 PM in ACST. Or use the converter above and pick any date and time.

What is the current time in ACST?

It is 10:28 AM in ACST on Tuesday, November 10 (the converter above shows it live). At the same moment it is 5:28 AM in IST.

Does the time difference between IST and ACST change during the year?

Yes. Right now ACST is 5 hours ahead of IST. Over the next 12 months the gap changes 2 times: Sunday, 4 April 2027: ACST moves its clocks back. ACST is 4 hours ahead of IST from then (it was 5 hours before). Sunday, 3 October 2027: ACST moves its clocks forward. ACST is 5 hours ahead of IST from then (it was 4 hours before).

What is 6 PM IST in ACST?

6 PM IST is 10:00 PM ACST when the clocks are on ACST (for example in July) and 11:00 PM ACST on ACDT (for example in January), because Australian Central Time changes its clocks. The chart on this page lists every half hour.

What is 7:30 PM IST in ACST?

7:30 PM IST is 11:30 PM ACST when the clocks are on ACST (for example in July) and 12:30 AM (next day) ACST 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 IST and ACST?

Between 9 AM and 6 PM in both places you can meet at 9:00 AM – 1:00 PM IST = 2:00 PM – 6:00 PM ACST. 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.)

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