Full name is Central Standard Time
ACST – Australian Central Standard Time (Alternative - often used in international context to avoid confusion with CST/Central Standard Time in Northern America)
Email time zone indicator: +0930
An email sent from someone in the CST time zone will have the time zone listed as "+0930" in the headers of the email. (However, "+0930" does not have to be in CST, as other time zones could have the same UTC offset).
For actual dates DST might be observed, look at the examples below
Where and when is CST observed?
CST is used during winter in these Australian territories (Central Daylight Time during summer)
New South Wales - only in Yancowinna County
South Australia
CST is used all year
Northern Territory
Time zone maps are under development and will be available later