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

Other days

donate your hair

Donate Your Hair Day
hoodie

Hoodie Day
bow tie

Bow Tie Day
kale

Kale Day
brow

Brow Day
bounce

Bounce Day
raise awerness of zeus

Raise Awerness Of Zeus Day
ride the wind

Ride The Wind Day
eat what you want

Eat What You Want Day
me

Me Day