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

Other days

buddy

Buddy Day
china

China Day
kiss a ginger

Kiss A Ginger Day
pick me

Pick Me Day
bounce

Bounce Day
one

One Day
hot chocolate

Hot Chocolate Day
lisp

Lisp Day
boba

Boba Day
donate your hair

Donate Your Hair Day