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

Other days

boy friend

Boy Friend Day
frozen yogurt

Frozen Yogurt Day
hannah

Hannah Day
camera

Camera Day
ponytail

Ponytail Day
unicorn

Unicorn Day
my little pony

My Little Pony Day
cat girl

Cat Girl Day
blanket fort

Blanket Fort Day
gum

Gum Day