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

Other days

ponytail

Ponytail Day
coffee

Coffee Day
china

China Day
self care

Self Care Day
bounce

Bounce Day
cat girl

Cat Girl Day
kiss a ginger

Kiss A Ginger Day
boba

Boba Day
stud

Stud Day
tell a fairytale

Tell A Fairytale Day