Oops, it doesn't look like 'glory in the day' is a national day..

Other days

martini

Martini Day
bow tie

Bow Tie Day
cursing

Cursing Day
lash

Lash Day
singles

Singles Day
ruby

Ruby Day
stud

Stud Day
pumpkin

Pumpkin Day
frozen yogurt

Frozen Yogurt Day
hannah

Hannah Day