Oops, it doesn't look like 'attack dan day' is a national day..

Other days

brow

Brow Day
buddy

Buddy Day
lumpy rug

Lumpy Rug Day
youth

Youth Day
gallery

Gallery Day
tell a fairytale

Tell A Fairytale Day
pick me

Pick Me Day
blanket fort

Blanket Fort Day
lisp

Lisp Day
self appreciation

Self Appreciation Day