Oops, it doesn't look like 'cream filled donut creampie day' is a national day..

Other days

one

One Day
polyamory

Polyamory Day
offer

Offer Day
boy friend

Boy Friend Day
tell a fairytale

Tell A Fairytale Day
ruby

Ruby Day
artists

Artists Day
nae nae

Nae Nae Day
gum

Gum Day
stud

Stud Day