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

Other days

believe

Believe Day
bow tie

Bow Tie Day
raise awerness of zeus

Raise Awerness Of Zeus Day
cursing

Cursing Day
gum

Gum Day
stud

Stud Day
prosecco

Prosecco Day
polyamory

Polyamory Day
hot chocolate

Hot Chocolate Day
kale

Kale Day