In addition to today being Old Calendar Festivus, it is also Australia Day, when the First Fleet arrived in Port Jackson (now Sydney Harbor) to establish the first permanent European settlement on the sixth continent.
A warm welcome and happy holiday to any Australian visitors. Unless you think of it as Invasion Day, of course.
It’s also the anniversary of the Rum Rebellion of 1808, the only armed takeover of government in Australia’s history. I’m reading of John McArthur’s takeover of the government of William Bligh (yes, of “Mutiny on the Bounty” fame) from Wikipedia. Australian history is a lot more colorful than I thought.