Oops, it doesn't look like 'send a dic pic day' is a national day..

Other days

kiss a ginger

Kiss A Ginger Day
law

Law Day
hannah

Hannah Day
kale

Kale Day
cursing

Cursing Day
coffee

Coffee Day
slime

Slime Day
ruby

Ruby Day
bow tie

Bow Tie Day
donate your hair

Donate Your Hair Day