Oops, it doesn't look like 'blood donor week and world blood donor day' is a national day..

Other days

slime

Slime Day
ruby

Ruby Day
hoodie

Hoodie Day
get funky

Get Funky Day
boy friend

Boy Friend Day
nae nae

Nae Nae Day
eat what you want

Eat What You Want Day
me

Me Day
latina equal pay

Latina Equal Pay Day
book

Book Day