ACST is NOT in use by many locationsACDT (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.
Australian Central Standard Time is 0 hours and 30 minutes ahead of Australian Western Daylight Time
6:00 pm18:00 in ACST is 5:30 pm17:30 in AWDT
ACST to AWDT call time
Best time for a conference call or a meeting is between 8:30am-6pm in ACST which corresponds to 8am-5:30pm in AWDT
6:00 pm18:00 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
5:30 pm17:30 Australian Western Daylight Time (AWDT). Offset UTC +9:00 hours
6:00 pm18:00 ACST / 5:30 pm17:30 AWDT
|12am (midnight)||11:30 pm|
|12pm (noon)||11:30 am|
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 timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Australian Central Daylight Time (ACDT).
End: ACST ended and clocks were set one hour forward on Sunday, 04 October 2020, at 2:00 (2:00 am) local time.
Start: ACST starts and clocks are set one hour back on Sunday, 04 April 2021, at 3:00 (3:00 am) local time.
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.