Oops, it doesn't look like 'girl group title as rookies and still be called that to this day' is a national day..

Other days

Prescription Drug Take Back Day

Tell Ur Crush You Like Them Day

Singles Day

Boyfriend Day

Gallery Day

Pumpkin Day

Latina Equal Pay Day

Raise Awerness Of Zeus Day

Lisp Day

Appreciate Yaself A Lil Extra Day