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

Other days

slime

Slime Day
brow

Brow Day
latina equal pay

Latina Equal Pay Day
bonang

Bonang Day
bounce

Bounce Day
frozen yogurt

Frozen Yogurt Day
nail polish

Nail Polish Day
kiss a ginger

Kiss A Ginger Day
ormille

Ormille Day
unicorn

Unicorn Day