Australian Central Standard Time (ACST) is used in South Australia and Northern Territory.

The Northern Territory State does not use Daylight Saving Time (DST).

Northern Territory Time

Darwin Time

(Australia Northern Territory Time Zone) GMT+9.5

South Australia Time

The Australian state of South Australia is in the Australian Central Standard Time Zone (ACST) .
Daylight Saving Time is in force during the summer months. Adelaide Time

Western Standard TimeEastern Standard TimeSouth Australia Time

Australia Daylight Saving Time

Daylight saving runs in New South Wales, the Australian Capital Territory, Victoria, South Australia and Tasmania from the end of October through to the end of March.

Source: Australian Federal Government: www.australia.gov.au