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

Other days

latina equal pay

Latina Equal Pay Day
blanket fort

Blanket Fort Day
polyamory

Polyamory Day
one

One Day
ponytail

Ponytail Day
camera

Camera Day
lisp

Lisp Day
lumpy rug

Lumpy Rug Day
tell a fairytale

Tell A Fairytale Day
ruby

Ruby Day