Oops, it doesn't look like 'married guy take a woman alone to dinner day' is a national day..

Other days

Raise Awerness Of Zeus Day

Emoji Day

Tulip Day

Tell Ur Crush You Like Them Day

Promposal Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Eat What You Want Day

Kiss A Brunette Day

Hot Chocolate Day

Girl Friend Day