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

Other days

cursing

Cursing Day
ruby

Ruby Day
boy friend

Boy Friend Day
girl friend

Girl Friend Day
first love

First Love Day
bounce

Bounce Day
eat what you want

Eat What You Want Day
artists

Artists Day
bubble bath

Bubble Bath Day
cuddle up

Cuddle Up Day