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

Other days

coffee

Coffee Day
gum

Gum Day
boy friend

Boy Friend Day
bounce

Bounce Day
fiancee

Fiancee Day
kiss a ginger

Kiss A Ginger Day
hiv awareness

Hiv Awareness Day
ride the wind

Ride The Wind Day
hoodie

Hoodie Day
promposal

Promposal Day