- 1924 – The first Woolworths Supermarket opens in the Imperial Arcade in Sydney.
- 1941 – Clive Caldwell, Australian fighter ace, shot down five Junkers Ju-87 (Stuka) dive bombers in matter of minutes.
- 1958 – Construction of Stage I of the Sydney Opera House begins.
- 1972 – Prime Minister Gough Whitlam establishes his first cabinet, consisting of himself and Lance Barnard.
- 1989 – Trevor Kaine becomes Chief Minister of the Australian Capital Territory.