Oops, it doesn't look like 'defend your belief in obvious conspiracy day' is a national day..

Other days

gum

Gum Day
embarrass your best friend

Embarrass Your Best Friend Day
cuddle up

Cuddle Up Day
boyfriend

Boyfriend Day
ask out your crush

Ask Out Your Crush Day
boy friend

Boy Friend Day
blanket fort

Blanket Fort Day
nae nae

Nae Nae Day
self care

Self Care Day
ride the wind

Ride The Wind Day