Oops, it doesn't look like 'book donation day' is a national day..

Other days

nae nae

Nae Nae Day
gum

Gum Day
youth

Youth Day
donate your hair

Donate Your Hair Day
pumpkin

Pumpkin Day
cat girl

Cat Girl Day
bow tie

Bow Tie Day
pick me

Pick Me Day
fiancee

Fiancee Day
blanket fort

Blanket Fort Day