Six months of daylight saving ends on Sunday morning.
Attorney-General and Cronulla MP Mark Speakman issued a reminder for people to update clocks where necessary.
"These days, technology updates most of our devices automatically at the official end of daylight saving," he said.
"That happens at 3am on Sunday morning, April 5 when the clock winds back to 2am. Analogue devices should be turned back an hour before bed."
Mr Speakman said an extra hour of sleep would be "welcomed by many in these days of social distancing and self-isolation".
Daylight saving starts on the first Sunday in October and finishes on the first Sunday in April.
This same period of daylight saving is observed in Victoria, South Australia, Tasmania and the ACT.
Queensland, Western Australia and the Northern Territory do not change their clocks.
Daylight saving has been in effect in NSW continuously since 1971.
.