Oops, it doesn't look like 'hit up your ex and tell them to go fuck themselves day' is a national day..

Other days

Lash Day

Lisp Day

Tell Ur Crush You Like Them Day

Boba Day

Believe Day

Lumpy Rug Day

Mean Girls Day

Boy Friend Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Nae Nae Day