Born in 2021

A selection from Wikipedia's '2021 in Australia'. Not a complete list.

• 1 January – The words of the Australian national anthem, "Advance Australia Fair", are changed for the first time since 1984, amending the line "For we are young and free" to "For we are one and free".
• 15 February – 142,000 doses of the Pfizer–BioNTech COVID-19 vaccine arrived in Australia.
• 13 March – The 2021 Western Australian state election is held with the incumbent McGowan Labor government winning with an increased majority.
• 19 March – A significant weather event impacts the New South Wales Mid North Coast and Western Sydney, causing major flooding and evacuations. Low-lying parts of Port Macquarie, Bulahdelah, City of Penrith, City of Hawkesbury, Dunbogan and the Laurieton foreshore are evacuated as a precaution.
• 1 May – The 2021 Tasmanian state election is held. Peter Gutwein's Liberal government is returned for a third term.
• 10 August – The national Census of Population and Housing is held.
• 15 September – Australia cancels its Attack-class submarine submarine construction deal with France, representing $90b, in favour of the AUKUS security alliance with the United States and United Kingdom, which includes the acquisition of nuclear powered submarines.
• 22 September – A 5.9 magnitude earthquake is reported, with the epicentre being around the Mansfield area in north-eastern Victoria. The quake's effects were felt as far away as Tasmania and Adelaide. Southern New South Wales experienced the quake as well.

Source: Wikipedia (CC BY-SA 4.0)

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