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

Other days

fiancee

Fiancee Day
bonang

Bonang Day
buddy

Buddy Day
frozen yogurt

Frozen Yogurt Day
pick me

Pick Me Day
slime

Slime Day
gum

Gum Day
donate your hair

Donate Your Hair Day
bow tie

Bow Tie Day
offer

Offer Day