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

Other days

pumpkin

Pumpkin Day
lost sock memorial

Lost Sock Memorial Day
camera

Camera Day
comfy

Comfy Day
kale

Kale Day
lisp

Lisp Day
bow tie

Bow Tie Day
china

China Day
blanket fort

Blanket Fort Day
carpenters

Carpenters Day