Analysis of information sources in references of the Wikipedia article "Time in Australia" in English language version.
Tomorrow we would switch our clocks to "Train Time", ninety minutes behind Adelaide. This unofficial time zone was needed because Australia's states were huge, and their time zones were synchronised with their biggest population centers.
On its four-day journey across this Continent/Country, somewhere in the middle of the Nullarbor Plain, the Indian pacific train creates its own time zone for scheduling purposes.