Oops, it doesn't look like 'Go Fuck Yourself day' is a national day..

Other days

china

China Day
buddy

Buddy Day
artists

Artists Day
kiss a ginger

Kiss A Ginger Day
bubble bath

Bubble Bath Day
lisp

Lisp Day
tulip

Tulip Day
kale

Kale Day
boy friend

Boy Friend Day
offer

Offer Day