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

Other days

kiss a ginger

Kiss A Ginger Day
camera

Camera Day
believe

Believe Day
self care

Self Care Day
brow

Brow Day
ruby

Ruby Day
frozen yogurt

Frozen Yogurt Day
one

One Day
first love

First Love Day
prosecco

Prosecco Day