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

Other days

singles

Singles Day
bubble bath

Bubble Bath Day
cuddle up

Cuddle Up Day
cat girl

Cat Girl Day
blanket fort

Blanket Fort Day
gum

Gum Day
brow

Brow Day
promposal

Promposal Day
lisp

Lisp Day
pick me

Pick Me Day