Oops, it doesn't look like 'ruin your life day' is a national day..

Other days

offer

Offer Day
my little pony

My Little Pony Day
aloxolt

Aloxolt Day
law

Law Day
kiss a brunette

Kiss A Brunette Day
camera

Camera Day
kale

Kale Day
mean girls

Mean Girls Day
cat girl

Cat Girl Day
china

China Day