1832  - 

The Swan River colony is officially renamed Western Australia. 

1926  - 

The South Australian nickname "crow-eater" is first explained in the Adelaide newspaper, the Register. 

1989  - 

The town of Rosewood, near Ipswich, Queensland, experiences a shower of sardine-sized fish.

1840  - 

The Treaty of Waitangi is signed, protecting Maori land interests in exchange for recognition of British sovereignty in New Zealand. [Australia is way behind in this regard. More -  http://en.wikipedia.org/wiki/Treaty_of_Waitangi]

1928  - 

A woman claiming to be the youngest daughter of the murdered czar of Russia arrives in America. 

1952  - 

King George VI of England dies, allowing Elizabeth II to ascend the throne. 

1964  - 

The British and French Governments announce their commitment to build a tunnel under the English Channel.