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

Other days

unicorn

Unicorn Day
kiss a ginger

Kiss A Ginger Day
lisp

Lisp Day
frozen yogurt

Frozen Yogurt Day
donate your hair

Donate Your Hair Day
gallery

Gallery Day
boba

Boba Day
nail polish

Nail Polish Day
gum

Gum Day
martini

Martini Day