Oops, it doesn't look like 'university and university of canberra clash at intervarsity sport day' is a national day..

Other days

Tell Ur Crush You Like Them Day

Ponytail Day

Pick Me Day

China Day

First Love Day

Appreciate Yaself A Lil Extra Day

Prescription Drug Take Back Day

Stress Awareness Day

Lost Sock Memorial Day

Tell A Fairytale Day