IST to ACST Converter
ACST is NOT in use by many locations
ACDT (Australian Central Daylight Time) is used instead. Switch to ACDT time zone or select one of the cities Adelaide, Darwin, Adelaide Hills) for automatic timezone change.Time Difference
India Standard Time is 4 hours behind Australian Central Standard Time
1:30 am01:30 in IST is 5:30 am05:30 in ACST
IST to ACST call time
Best time for a conference call or a meeting is between 8am-2pm in IST which corresponds to 12pm-6pm in ACST
1:30 am01:30 India Standard Time (IST). Offset UTC +5:30 hours
5:30 am05:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
1:30 am01:30 IST / 5:30 am05:30 ACST
| IST | ACST |
|---|---|
| 12am (midnight) | 4am |
| 1am | 5am |
| 2am | 6am |
| 3am | 7am |
| 4am | 8am |
| 5am | 9am |
| 6am | 10am |
| 7am | 11am |
| 8am | 12pm (noon) |
| 9am | 1pm |
| 10am | 2pm |
| 11am | 3pm |
| 12pm (noon) | 4pm |
| 1pm | 5pm |
| 2pm | 6pm |
| 3pm | 7pm |
| 4pm | 8pm |
| 5pm | 9pm |
| 6pm | 10pm |
| 7pm | 11pm |
| 8pm | 12am (midnight) |
| 9pm | 1am |
| 10pm | 2am |
| 11pm | 3am |
| 0:00 | 4:00 |
| 1:00 | 5:00 |
| 2:00 | 6:00 |
| 3:00 | 7:00 |
| 4:00 | 8:00 |
| 5:00 | 9:00 |
| 6:00 | 10:00 |
| 7:00 | 11:00 |
| 8:00 | 12:00 |
| 9:00 | 13:00 |
| 10:00 | 14:00 |
| 11:00 | 15:00 |
| 12:00 | 16:00 |
| 13:00 | 17:00 |
| 14:00 | 18:00 |
| 15:00 | 19:00 |
| 16:00 | 20:00 |
| 17:00 | 21:00 |
| 18:00 | 22:00 |
| 19:00 | 23:00 |
| 20:00 | 0:00 |
| 21:00 | 1:00 |
| 22:00 | 2:00 |
| 23:00 | 3:00 |
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, India Standard Time remains the same
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
Australian Central Standard Time
Offset: ACST is 9 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia
Countries: It is used in following countries: Australia
Principal Cities: The largest city in the ACST timezone is Adelaide from Australia with population about 1.225 million people. Other major cities in the area are Darwin, Adelaide Hills, Alice Springs, Palmerston
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Australian Central Daylight Time (ACDT).
End: Australian Central Standard Time (ACST) has ended on Sunday, October 2, 2022 at 2:00 am local time and clocks were set one hour forward to Sunday, October 2, 2022, 3:00 am local daylight time instead. Standard time ends annually the on first Sunday of October.
Start: Australian Central Standard Time (ACST) starts on Sunday, April 2, 2023 at 3:00 am local time and clocks are set one hour back to Sunday, April 2, 2023, 2:00 am. Standard time starts annually the on first Sunday of April.
ACST representations, usage and related time zones
- +0930 - basic
- +09:30 - extended
- +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates nine hour and thirty minutes time differences to the east of the zero meridian.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/Darwin
- Australia/North
- Australia/South
- Australia/Yancowinna