Oops, it doesn't look like 'find your hash tag day' is a national day..

Other days

ormille

Ormille Day
bounce

Bounce Day
ask out your crush

Ask Out Your Crush Day
lisp

Lisp Day
pumpkin

Pumpkin Day
unicorn

Unicorn Day
coffee

Coffee Day
bubble bath

Bubble Bath Day
gum

Gum Day
lumpy rug

Lumpy Rug Day