Oops, it doesn't look like 'park fees waived on mlk day' is a national day..

Other days

first love

First Love Day
cuddle up

Cuddle Up Day
boba

Boba Day
hiv awareness

Hiv Awareness Day
bubble bath

Bubble Bath Day
slime

Slime Day
gum

Gum Day
emoji

Emoji Day
kiss a ginger

Kiss A Ginger Day
bow tie

Bow Tie Day