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

Other days

kiss a ginger

Kiss A Ginger Day
china

China Day
hoodie

Hoodie Day
lisp

Lisp Day
lumpy rug

Lumpy Rug Day
cat girl

Cat Girl Day
buddy

Buddy Day
coffee

Coffee Day
tell a fairytale

Tell A Fairytale Day
unicorn

Unicorn Day