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

Lumpy Rug Day

Appreciate Yaself A Lil Extra Day

Azonto Is Acceptable Day

Carpenters Day

Nail Polish Day

My Little Pony Day

Aloxolt Day

Cat Girl Day

Lash Day

Embarrass Your Best Friend Day