Oops, it doesn't look like 'donut or doughnut day' is a national day..

Other days

bow tie

Bow Tie Day
nail polish

Nail Polish Day
bounce

Bounce Day
law

Law Day
singles

Singles Day
fiancee

Fiancee Day
artists

Artists Day
tell a fairytale

Tell A Fairytale Day
hannah

Hannah Day
boba

Boba Day