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

Other days

kale

Kale Day
ponytail

Ponytail Day
offer

Offer Day
lash

Lash Day
coffee

Coffee Day
ruby

Ruby Day
comfy

Comfy Day
lost sock memorial

Lost Sock Memorial Day
bow tie

Bow Tie Day
nae nae

Nae Nae Day