Oops, it doesn't look like 'aborigines day' is a national day..

Other days

ruby

Ruby Day
stress awareness

Stress Awareness Day
self appreciation

Self Appreciation Day
book

Book Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
tulip

Tulip Day
cuddle up

Cuddle Up Day
chocolate milkshake

Chocolate Milkshake Day
slime

Slime Day
bow tie

Bow Tie Day