Australian Time Zones

Australia has time seven zones if you include the island territories of Norfolk, Lord Howe, Cocos Keeling and Christmas.
The mainland states plus Tasmania normally have three.
There are a few oddities.
Broken Hill in New South Wales chooses the South Australia zone as it’s closer to Adelaide than Sydney.

Central Western Standard Time is an unofficial, albeit clearly signed, zone that applies at roadhouses for some 340 kilometres of Western Australia up to Border Village roadhouse on the Nullabor near the South Australia border.

But all that changes on the first weekend of October when daylight saving time kicks in until the first weekend in April.

The Australian mainland plus Tasmania now has five.

Both Queensland and Western Australia plus the Northern Territory rejected the concept.
A bit inconvenient especially for those living on the heavily populated coastal region of the New South Wales/Queensland border.

But it is what it is.