Oops, it doesn't look like 'nude hot dog day' is a national day..

Other days

girl friend

Girl Friend Day
bow tie

Bow Tie Day
ruby

Ruby Day
nail polish

Nail Polish Day
china

China Day
lisp

Lisp Day
hiv awareness

Hiv Awareness Day
blanket fort

Blanket Fort Day
frozen yogurt

Frozen Yogurt Day
gum

Gum Day