Oops, it doesn't look like 'vietnam war veterans vietnam war veterans day' is a national day..

Other days

frozen yogurt

Frozen Yogurt Day

ponytail

Ponytail Day

donate your hair

Donate Your Hair Day

offer

Offer Day

tell a fairytale

Tell A Fairytale Day

Me Day

ormille

Ormille Day

pumpkin

Pumpkin Day

special education

Special Education Day

stud

Stud Day