Broken Hill, even though it is in the state of New South Wales, adheres to South Australian time including daylight savings time. If you want the entire NSW legislation database . Queensland Parliamentary Library - debates on daylight saving in Queensland are archived in The Hansard . The effect of DST on Australia's meterological records eg. climate and temperature changes. I from 1 January 1917 to 25 March 1917 and during World War II for three summers, beginning on 1 January 1942.
Daylight saving in New South Wales now finishes on the same date as in Victoria and South Australia.
Brisbane, Sydney and Melbourne had diffferent times according to the line of longitude which ran through the particular city. In other words, when it was 8.30am in Brisbane, it was 8.18am in Sydney and 8.12am in Melbourne. In those days, it didn't really matter with ships and overland travel the only way of getting from one city to the other. Someone came up with the bright idea, that there might be some advantage to standardise the times for the Australian colonies on the eastern seaboard. This enabled a common standard time for each colony and ultimately put the east coast of Australia on one of 24 standard time zones around the earth.