- 1896 – The Brisbane River ferry Pearl capsizes, killing 28.
- 1907 – The Northern Territory is transferred to the Commonwealth by South Australia.
- 1938 – Sydney ferry the Rodney with 150 passengers capsizes in Sydney Harbour while farwelling US Navy cruiser USS Louisville, killing 19.
- 1954 – Mawson Station in the Australian Antarctic Territory is established.
- 1978 – The Sydney Hilton bombing occurs during a meeting of the Commonwealth Heads of Government.
13th 2008, Formal apology to Indigenous People, particularly the Stolen Generation by Prime Minister Kevin Rudd