Oops, it doesn't look like 'you gettin cheated on day' is a national day..

Other days

Ponytail Day

Boy Friend Day

Book Day

Tell Ur Crush You Like Them Day

Nae Nae Day

Stress Awareness Day

Cuddle Up Day

Hot Chocolate Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Carpenters Day