Oops, it doesn't look like 'statement of the bastard obvious day' is a national day..

Other days

special education

Special Education Day
embarrass your best friend

Embarrass Your Best Friend Day
slime

Slime Day
kiss a ginger

Kiss A Ginger Day
kiss a brunette

Kiss A Brunette Day
hiv awareness

Hiv Awareness Day
tell ur crush you like them

Tell Ur Crush You Like Them Day
ask out your crush

Ask Out Your Crush Day
ruby

Ruby Day
eat what you want

Eat What You Want Day