Oops, it doesn't look like 'post card for our president day' is a national day..

Other days

law

Law Day
self appreciation

Self Appreciation Day
ruby

Ruby Day
comfy

Comfy Day
latina equal pay

Latina Equal Pay Day
blanket fort

Blanket Fort Day
self care

Self Care Day
lash

Lash Day
me

Me Day
lisp

Lisp Day