Australia Day is the official national day of Australia. Celebrated annually on 26 January, the day commemorates the arrival of the First Fleet at Sydney Cove in 1788, the hoisting of the British flag there, and the proclamation of British sovereignty over the eastern seaboard of Australia.
Australia Day is seen as controversial by some Australians, who see it as a celebration of the destruction of Indigenous culture by British colonialism.
If you want to find out more about Australia, try this questions and answers.
You can also watch this documentary about some of the impressive locations where the film "Australia" was shot, and get an idea of what an Aussie accent sounds like.