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

Other days

hiv awareness

Hiv Awareness Day
frozen yogurt

Frozen Yogurt Day
self care

Self Care Day
gum

Gum Day
eat what you want

Eat What You Want Day
blanket fort

Blanket Fort Day
lisp

Lisp Day
stud

Stud Day
boba

Boba Day
bow tie

Bow Tie Day