The clocks go forward tonight for daylight saving in three states and the ACT. Tasmania began daylight saving several weeks ago.
Large numbers of Australians are unhappy, particularly in south-east Queensland and Perth where they would like daylight saving and do not have it and in large parts of western NSW where it is not wanted. Australian Governments have still got it right. They are attempting to defy the laws of nature with their lines on a map that mark state boundaries. But time stands still for no state premier.
The essential troubles are size and politics. Australia straddles 40 degrees of longitude. With a 24 hour day, that represents 2 hours and 40 minutes. Western Australian and Queensland each are more than 15 degrees of longitude wide at their widest, which represents one 24th of the globe or one hour. It means that the sun rises and sets and hour earlier (or later) in one part of the state than it does in another if the state has a uniform time zone. Vertically, too, Australia’s great distance defies uniformity of time. In the tropical north sunrise and sunset are about 12 hours apart all year; in Tasmania sunrise and sunset are about eight hours apart in winter and 16 hours apart in summer.
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