Oops, it doesn't look like 'Museums Shut For Second Museums Are Shut For A Second day' is a national day..

Other days

Nae Nae Day

Tell Ur Crush You Like Them Day

Kiss A Brunette Day

Singles Day

Me Day

Pampering Day

Ride The Wind Day

Ask Out Your Crush Day

Appreciate Yaself A Lil Extra Day

Kale Day