Oops, it doesn't look like 'yams and mlk day' is a national day..

Other days

cursing

Cursing Day
polyamory

Polyamory Day
tulip

Tulip Day
hiv awareness

Hiv Awareness Day
kale

Kale Day
bow tie

Bow Tie Day
coffee

Coffee Day
mean girls

Mean Girls Day
stress awareness

Stress Awareness Day
gallery

Gallery Day