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

Other days

boba

Boba Day
lisp

Lisp Day
ask out your crush

Ask Out Your Crush Day
artists

Artists Day
get funky

Get Funky Day
buddy

Buddy Day
kiss a ginger

Kiss A Ginger Day
cat girl

Cat Girl Day
fiancee

Fiancee Day
pumpkin

Pumpkin Day