Oops, it doesn't look like 'pecan sandy pecan sandy day' is a national day..

Other days

bow tie

Bow Tie Day
gallery

Gallery Day
tell a fairytale

Tell A Fairytale Day
boba

Boba Day
pick me

Pick Me Day
ponytail

Ponytail Day
fiancee

Fiancee Day
bounce

Bounce Day
slime

Slime Day
camera

Camera Day