Aussie holidays do not include a "Thanksgiving" equivalent..Well not to my knowledge. I suppose 'ANZAC Day' might somewhat act in someway like that...but not really. There's also 'Australia Day' in which we recognise the birth of the Australian nation, and celebrate it. Though that may be more analogous to 'Independance Day'.
So...I guess we do not have such an equivalent. We don't really need to give thanks to anyone...I mean we started out as a prison colony..I can really imagine a bunch of prisoners thanking the builder of the prison...Yep.
But what is "Thanksgiving" about? How did it start? What does it signify?