Oops, it doesn't look like 'geographic channel all day' is a national day..

Other days

gum

Gum Day
camera

Camera Day
lash

Lash Day
blanket fort

Blanket Fort Day
lumpy rug

Lumpy Rug Day
martini

Martini Day
cursing

Cursing Day
nail polish

Nail Polish Day
ruby

Ruby Day
first love

First Love Day