Daylight saving begins this Sunday, 4 October 2026, with residents across New South Wales, Victoria, Tasmania, South Australia and the Australian Capital Territory winding their clocks forward by one hour overnight. The change means losing an hour of sleep but gaining more usable daylight in the afternoons and evenings — a trade-off that affects millions of Australians for the next six months.
When and how the clocks change for daylight saving
In NSW, Victoria, Tasmania and the ACT, clocks move forward from 2am to 3am on Sunday morning. South Australia follows the same one-hour shift, moving from 2am Australian Central Standard Time to 3am Australian Central Daylight Time.
The simple way to remember it: "spring forward". At 2am, one hour effectively vanishes from the night. As a result, both sunrise and sunset will appear an hour later on the clock, extending the amount of daylight available after work and school. The downside for early risers is that mornings will be noticeably darker, at least until the days continue to lengthen through summer.
Daylight saving will remain in effect until Sunday 4 April 2027, when clocks return to standard time by moving back one hour.
For a full breakdown of the specific timing changes by state, see our earlier coverage on when clocks change in NSW, Victoria, Tasmania and South Australia.
Which states observe daylight saving — and which don't
Not all Australians are affected. Queensland, Western Australia and the Northern Territory do not observe daylight saving, meaning residents there will notice a shift in the time difference between their state and the southern and eastern capitals.
There are also a couple of notable local variations. Broken Hill in far-western NSW aligns with South Australia's time zone and does observe daylight saving. Lord Howe Island, however, takes a different approach — clocks there move forward by just 30 minutes rather than a full hour.
The practical effect of these arrangements is that during the daylight saving period, Australia operates across five time zones rather than its usual three. Daylight saving time is observed in varying forms across many countries, though the specific dates and rules differ widely by region.
Health effects and tips for adjusting
Losing an hour of sleep may sound minor, but the clock change can temporarily disrupt the body's internal sleep-wake cycle. The Sleep Health Foundation notes that the spring transition is generally harder to adapt to than the autumn change, when clocks go back and people gain an extra hour of rest.
Most people adjust without serious difficulty, but some may feel more tired or sluggish for a few days. Research suggests the effects can go beyond simple tiredness. A sleep and circadian health expert from Swinburne University has explained that adjusting light levels and timing can affect people's circadian rhythms — their underlying biological rhythms — and that those who are already vulnerable to sleep disruption may experience "quite significant effects on physical and mental health".
To ease the transition, the Sleep Health Foundation recommends gradually shifting bedtime earlier by around 15 to 20 minutes over three or four nights before the clocks change. This gentle adjustment can help the body adapt more smoothly before the official switch takes effect.
Don't forget to update your clocks manually
Most modern devices — smartphones, computers and anything connected to the internet — will update automatically. However, analogue clocks, watches, ovens, microwaves and other household appliances will need to be set manually. It's worth doing a quick check around the home on Saturday night to avoid any confusion on Sunday morning.
With the longer evenings returning, daylight saving offers a welcome shift for those who enjoy outdoor activities, evening dining or simply making the most of the extra afternoon light through the warmer months ahead.
