Oops, it doesn't look like 'flag will fly half mast on all government buildings for one day' is a national day..

Other days

Ruby Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Slime Day

Tell A Fairytale Day

Lost Sock Memorial Day

Bubble Bath Day

Coffee Day

Tell Ur Crush You Like Them Day

Gum Day

Embarrass Your Best Friend Day