When does daylight saving time start in Australia in 2022? How long does it go for? Do I change the time on my phone?
Food delivery company Deliveroo has entered administration, leaving thousands of Australian riders and restaurants in the lurch
Follow the latest developments on Russian missile strikes in Ukraine and Poland in our live blog
Follow the latest updates from the NSW floods in our live blog
For the latest flood and weather warnings, search on ABC Emergency
Follow the results as votes in the US midterms are counted
The days are getting warmer and, for certain parts of Australia, that means a time shift is here.
Even though it happens twice a year, changing the clocks to sync up with daylight saving time can be confusing.
Let's run through your questions about daylight saving time.
Today.
Each year, daylight saving time kicks in at 2am on the first Sunday of October.
Clocks have moved forward by one hour.
Probably not, because most smart phones will adjust to time zones automatically.
Here's how to check if your smartphone does this:
This should mean your phone will automatically reflect the time depending on which state or territory you're in.
Each year, daylight saving time ends on the first Sunday of April.
Next year, that falls on April 2.
The Northern Territory, Queensland and Western Australia don't observe daylight saving time.
Norfolk Island does switch over to daylight saving time, but Christmas Island and the Cocos (Keeling) Islands do not.
The US Senate passed legislation that would make daylight saving time permanent starting in 2023. Aussie expects say it's a bad idea.
The correct terminology is "daylight saving time".
Roly Sussex — emeritus professor of applied language studies at the University of Queensland — explains why.
The trick is to think about the way we refer to the collection of money in our piggy banks as "savings".
"Saving is a process … the result of my activity in saving is savings," Professor Sussex said.
Winding back the clocks is the process of saving, whereas the extended sunlight at the end of the day is the "savings" in this equation.
However, if you're among the group of people who say "daylight savings" instead of "daylight saving", then you're not alone.
A quick look at Google Trends shows the plural is more popular among Australians searching for the term. Check out the graph of searches throughout the past year:
In case you were wondering, those spikes came around the first Sundays of April and October.
A breakdown of that data into states and territories shows that, across the board, "savings" is the more popular search term.
We asked Professor Sussex if it's OK to say "daylight savings" in casual settings.
"You hear it so much that I don’t think I’d do more than twitch," he said.
And he pointed out that, sometimes, putting an "s" at the end of the word "saving" is correct. He gave the following example:
"Daylight saving is a viable commercial strategy.
'Daylight savings are welcomed by lots of people except in Queensland."
It doesn't.
But it does give people the illusion of having extra daylight.
Let's say that, in standard time, the sun rises at 6am and sets at 5:30pm.
Because daylight saving time is an hour ahead, it would be 7am in daylight saving time when the sun rose and 6:30pm when the sun set.
What this does is shift people's schedules by an hour so that, when they finish work or school, the sun is still high in the sky.
The idea is that people spend that hour of leisure time outside enjoying the sunshine in the afternoon instead of sleeping through it in the morning.
But this relies on people working a standard 9am to 5pm workday.
Because it's up to each individual state and territory to decide if they want to observe daylight saving time or not.
Here's a section of a 2009 Australian Parliamentary Library research paper on our "turbulent history" of daylight saving time which speaks to that:
"…the responsibility for the setting of time zones has remained with state and territory authorities.
"Commonwealth power over weights and measures in the Constitution extends to the measurement of time, but whether it has power to legislate about time zones is not free from doubt."
That's a quirk of federation, but also reflects that Australia expands across quite a vast space.
The northernmost point of Australia — Cape York, Queensland — is at a latitude of 10° 41' 21" S.
About 3,860 kilometres away is Australia's southernmost point — South East Cape, Tasmania — at 43° 38' 40" S.
Because the Earth is tilted, the amount of sunlight South East Cape gets across the seasons varies much more than it does up in Cape York.
Here's a quick breakdown of that, using sunrise and sunset data from Geoscience Australia — we looked at the hours between sunrise and sunset for the summer and winter solstices from last year.
However, the Cape York data came from a station a few degrees south from the northernmost point.
Maximum hours of sunlight in winter
Maximum hours of sunlight in summer
Cape York, Queensland
11 hours, 14 minutes
13 hours, 1 minute
South East Cape, Tasmania
8 hours, 55 minutes
15 hours, 26 minutes
Obviously, these are the extremes and the majority of people live quite a distance from these points, but it demonstrates the differences in conditions in the south and the north.
And different conditions call for different policies.
For example, a 2010 paper by Queensland parliamentary librarian Mary Westcott said one of the major arguments against daylight saving time from its opposers was that the state's climate was too hot for it to be effective.
It would mean that hour of afternoon leisure time would be spent in the heat of the day, with people more likely to be inside trying to escape the heat than outside gardening, having picnics or playing sport.
However, because of its latitude, the afternoon heat is less of an issue in somewhere like Tasmania.
Here's a table breaking down when each state and territory has observed daylight saving time:
State/territory
Dates in use
Australian Capital Territory
1917-18; 1942-44; 1971-present
New South Wales
1917-18; 1942-44; 1971-present
Northern Territory
1917-18; 1942-44
Queensland
1917-18; 1942-44; 1971-72; 1989-92
South Australia
1917-18; 1942-44; 1971-present
Tasmania
1916-19; 1942-44; 1967-present
Victoria
1917-18; 1942-44; 1971-present
Western Australia
1917-18; 1942-43; 1974-75; 1983-84; 1991-92; 2006-09
Tasmania was the first Australian state to bring in daylight saving time in 1916, during World World I.
The whole of Australia observed daylight saving time in 1917.
In 1941, the nation gave it another go, to reduce demand for artificial lighting and cut back on energy during World War II — Western Australia opted out in 1943, but the rest of the country continued on daylight saying time until 1944.
Then-prime minister John Curtin reportedly said the measure saved at least 10,000 tons of coal, but state and territory leaders complained it was seen as "inconvenient", according to a 1984 paper by then-Tasmanian parliamentary librarian T A Newman.
Does the "saving" part of daylight saving time still hold up today?
Tasmania led the charge for bringing back daylight saving time, reinstating it in 1967 to conserve power during a severe drought, which was impacting the state's energy supply.
This prompted other states to trial daylight saving time in 1971, with the Australian Capital Territory, New South Wales, South Australia and Victoria making the change permanent.
Queensland was part of this trial, but dropped daylight saving time in 1972.
It then reinstated it in 1989, before eventually abandoning it again after a referendum in 1992.
Western Australia more recently trialled daylight saving time from 2006 to 2009 and also reverted back to standard time when citizens voted against it — the state's fourth referendum on the matter.
The NT hasn't observed daylight saving time since WWII.
Here's the results of state referendums on the issue, as documented in the 2009 paper:
State
Date
For
Against
New South Wales
1/05/1976
68.42%
31.58%
Queensland
22/02/1992
45.5%
54.5%
South Australia
6/11/1982
71.62%
28.38%
Western Australia
8/03/1975
46.34%
53.66%
Western Australia
7/04/1984
45.65%
54.35%
Western Australia
4/04/1992
46.86%
53.14%
Western Australia
16/05/2009
45.44%
54.56%
It's also worth noting that, as you can see from those vote results, not everyone agrees with their state or territory's stance on daylight saving time.
Advocates for daylight saving time in Queensland say syncing up with the southern states would help businesses who have to work across two time zones, which creates great frustration on the Queensland-New South Wales border.
And some of the key arguments against daylight saving listed in the Tasmanian paper were that it disadvantaged farmers whose schedules revolved around the sun and that children in regional areas were waiting for their morning school bus in darkness.
It could.
The Fair Work Ombudsman website says workers should check their award or agreements for terms about daylight saving time.
"If there is nothing in them about daylight saving, payment is made ‘by the clock'," it said.
"This means payment will depend on whether daylight saving starts or ends."
Here's the example Fair Work gives to explain this:
Darryl works an eight hour shift. Darryl doesn't have an award or registered agreement that says anything about daylight savings.
During this shift daylight saving starts and the clock is put forward one hour.
This means that while Darryl only works for seven hours, he is paid for eight hours of work.
On the other hand, if Darryl is working when daylight saving ends, while he actually works nine hours he is only paid for eight.
We acknowledge Aboriginal and Torres Strait Islander peoples as the First Australians and Traditional Custodians of the lands where we live, learn, and work.
This service may include material from Agence France-Presse (AFP), APTN, Reuters, AAP, CNN and the BBC World Service which is copyright and cannot be reproduced.
AEST = Australian Eastern Standard Time which is 10 hours ahead of GMT (Greenwich Mean Time)
