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

Other days

self care

Self Care Day
lumpy rug

Lumpy Rug Day
raise awerness of zeus

Raise Awerness Of Zeus Day
ponytail

Ponytail Day
boba

Boba Day
ask out your crush

Ask Out Your Crush Day
offer

Offer Day
lisp

Lisp Day
stud

Stud Day
cat girl

Cat Girl Day