Oops, it doesn't look like 'sports song on sports day' is a national day..

Other days

Tell Ur Crush You Like Them Day

Embarrass Your Best Friend Day

My Little Pony Day

Appreciate Yaself A Lil Extra Day

Chocolate Milkshake Day

Bow Tie Day

Reading Day

Kiss A Brunette Day

Promposal Day

Prosecco Day