HOW AUSTRALIA WILL OBSERVE QUEEN'S DEATH
* Governor-General David Hurley, Prime Minister Anthony Albanese, Opposition leader Peter Dutton and others laid wreaths at Parliament House.
* The AFL and NRL will observe one-minute's silence at games on Saturday and Sunday.
* The Victorian Racing Club will observe a minute's silence after a 2.33pm tribute at Flemington Racecourse.
* The Sydney Opera House sails will be illuminated from 6.30pm until midnight.
* A Proclamation of the King ceremony will be held outside Parliament House in Canberra, followed by a 21-gun salute.
* A NSW proclamation ceremony will take place at Parliament House in Sydney from 12.30pm.
* A South Australian proclamation ceremony will take place at 2pm outside state parliament. Public transport across Adelaide will be free.
* Cricketers are expected to hold a one-minute silence ahead of a semi-final match between Sydney United and Brisbane Roar.
* Sunday Anglican church services will mark the Queen's life. At St Paul's Cathedral in Melbourne, a 6pm service will be led by Archbishop Philip Freier and streamed online.
THE WEEKS AHEAD
* There is no official mourning period in Australia, but the prime minister has suspended parliament for at least 15 days.
* The Victorian parliament will sit briefly on Tuesday for MPs to swear allegiance to King Charles III - the only state where this is required after the death of a monarch - and move a condolence motion before adjourning to a later date.
* The NSW and WA parliaments will also briefly convene on Tuesday to hear condolences. Parliamentary sittings in both states are due to resume on 20 September.
* The Queensland state parliament, which was due to sit next week, will be adjourned until a later date.
* The federal, state and territory governments have set up condolence books across the country. People can also sign online condolence books on the Department of the Prime Minister and Cabinet and governor-general's websites.
* People are encouraged to leave flowers outside Parliament House and Government House in Canberra, as well as government houses in each state and territory.
* The royal family has flagged Australians can also donate to charity instead of leaving flowers.
* Australian flags will be flown at half-mast until the day after the Queen's funeral occurs in the UK. There is one exception: Flags will be raised to full mast on Sunday when Charles is proclaimed King.
* A national day of mourning and memorial service will be held in Australia, but the date has not been confirmed.
* Eight days after the Queen's death, the prime minister, governor-general and acting high commissioner will attend Westminster Hall for the Queen's lying in state and meet with King Charles III.