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

Other days

eat what you want

Eat What You Want Day
lisp

Lisp Day
hannah

Hannah Day
cuddle up

Cuddle Up Day
boy friend

Boy Friend Day
frozen yogurt

Frozen Yogurt Day
singles

Singles Day
gum

Gum Day
ruby

Ruby Day
pumpkin

Pumpkin Day