Oops, it doesn't look like 'by placing bets or even giving it the time of day' is a national day..

Other days

Reading Day

Tell Ur Crush You Like Them Day

Carpenters Day

Mean Girls Day

Appreciate Yaself A Lil Extra Day

Gum Day

Raise Awerness Of Zeus Day

Kiss A Ginger Day

Blanket Fort Day

Bubble Bath Day