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

Other days

bounce

Bounce Day
boy friend

Boy Friend Day
bow tie

Bow Tie Day
hiv awareness

Hiv Awareness Day
artists

Artists Day
raise awerness of zeus

Raise Awerness Of Zeus Day
buddy

Buddy Day
lost sock memorial

Lost Sock Memorial Day
embarrass your best friend

Embarrass Your Best Friend Day
slime

Slime Day