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

Other days

bounce

Bounce Day
get funky

Get Funky Day
ruby

Ruby Day
lost sock memorial

Lost Sock Memorial Day
bow tie

Bow Tie Day
mean girls

Mean Girls Day
kale

Kale Day
blanket fort

Blanket Fort Day
fiancee

Fiancee Day
carpenters

Carpenters Day