Oops, it doesn't look like 'mighty eighth museum air force museum on memorial day' is a national day..

Other days

polyamory

Polyamory Day

bonang

Bonang Day

first love

First Love Day

Me Day

boyfriend

Boyfriend Day

embarrass your best friend

Embarrass Your Best Friend Day

pampering

Pampering Day

nail polish

Nail Polish Day

girl friend

Girl Friend Day

kiss a ginger

Kiss A Ginger Day