Oops, it doesn't look like 'sorry as i am sure most of white australia is unaware it is a day' is a national day..

Other days

Tell Ur Crush You Like Them Day

Lost Sock Memorial Day

Unicorn Day

Hoodie Day

Lisp Day

Pampering Day

Tell A Fairytale Day

Ponytail Day

Self Appreciation Day

Pumpkin Day