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

Other days

embarrass your best friend

Embarrass Your Best Friend Day
first love

First Love Day
self appreciation

Self Appreciation Day
stud

Stud Day
hoodie

Hoodie Day
lisp

Lisp Day
promposal

Promposal Day
carpenters

Carpenters Day
tell a fairytale

Tell A Fairytale Day
azonto is acceptable

Azonto Is Acceptable Day