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

Other days

stud

Stud Day
ruby

Ruby Day
lisp

Lisp Day
ponytail

Ponytail Day
tulip

Tulip Day
frozen yogurt

Frozen Yogurt Day
boyfriend

Boyfriend Day
gum

Gum Day
first love

First Love Day
tell ur crush you like them

Tell Ur Crush You Like Them Day