Oops, it doesn't look like 'parkphoto by jono heygood morning and happy hump day' is a national day..

Other days

Lisp Day

Bow Tie Day

Ask Out Your Crush Day

Boba Day

Eat What You Want Day

Tell Ur Crush You Like Them Day

Latina Equal Pay Day

Embarrass Your Best Friend Day

Aloxolt Day

Girl Friend Day