Portal:Australia/Anniversaries/September/September 12
- 1844 – The Royal Society of Tasmania was formed, it was the first branch of the Society established outside Britain.
- 1854 – Lieutenant-Governor of Victoria Charles Hotham opens Flinders Street Station, the first city railway station in Australia.
- 1918 – George Reid, fourth Prime Minister of Australia, dies.
- 2005 – England wins The Ashes back from Australia for the first time since 1987.