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

Other days

eat what you want

Eat What You Want Day
buddy

Buddy Day
bow tie

Bow Tie Day
reading

Reading Day
stud

Stud Day
unicorn

Unicorn Day
kiss a brunette

Kiss A Brunette Day
boba

Boba Day
brow

Brow Day
gum

Gum Day