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

Other days

comfy

Comfy Day
youth

Youth Day
gum

Gum Day
artists

Artists Day
law

Law Day
book

Book Day
kiss a ginger

Kiss A Ginger Day
kiss a brunette

Kiss A Brunette Day
nae nae

Nae Nae Day
pick me

Pick Me Day