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

Other days

ruby

Ruby Day
my little pony

My Little Pony Day
blanket fort

Blanket Fort Day
ormille

Ormille Day
tulip

Tulip Day
boy friend

Boy Friend Day
lisp

Lisp Day
stud

Stud Day
frozen yogurt

Frozen Yogurt Day
martini

Martini Day