As the days get cooler, Australians in most states and territories are preparing to turn back clocks for the end of daylight saving this week.Here's what you need to know.Daylight saving will end on Sunday, April 5.When local time in the following states and territories reaches 3am clocks will be turned backward to 2am.This means people in affected states and territories will get an extra hour sleep.Daylight saving time is used in:Daylight saving ends on the first Sunday of April every year.This year it happens to fall on Easter Sunday.The legislation does not explicitly spell out why the change always happens on a Sunday.However, the assumption is that lining it up with a weekend is less disruptive for schools and businesses that operate on a Monday to Friday basis.This year daylight saving will begin again on Sunday, October 4.Yes.That is why if you search for "when does daylight saving end?" in a search engine you might be given a different date.In the US, daylight saving time starts on the second Sunday of March and ends on the first Sunday of November.And it is different again in the UK.Daylight saving time there kicks off on the last Sunday of March and ends on the last Sunday in October.