What Is Australia Day 26 January ?

Australia Day celebrates the arrival of Captain Arthur Phillip, commander of the First Fleet, eleven convict ships from Great Britain and the first governor of New South Wales, at Sydney Cove. The raising of the Union Jack there symbolised British occupation of the eastern half of the continent.
The tradition of noticing 26 January began early in the nineteenth century with Sydney almanacs referring to First Landing Day or Foundation Day.
The celebration of Australia Day was first held in 1935.
Since 1994 Australia Day has been consistently held as a public holiday on that date
Australia Day is a public holiday throughout Australia. So have a great day Australia.