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

Other days

coffee

Coffee Day
ruby

Ruby Day
cat girl

Cat Girl Day
bonang

Bonang Day
pumpkin

Pumpkin Day
kiss a ginger

Kiss A Ginger Day
boy friend

Boy Friend Day
donate your hair

Donate Your Hair Day
lumpy rug

Lumpy Rug Day
hannah

Hannah Day