This year daylight saving begins in NSW on Sunday, October 2 when clocks go forward one hour at 2am.

It will end on April 2, 2017 when clocks will be wound back one hour at 3am. 

For future summers, daylight saving in NSW will begin at 2am, Eastern Standard Time, on the first Sunday in October and end at 3am Eastern Daylight Saving Time on the first Sunday the following April.

Daylight saving was originally introduced during World War 1.