Oops, it doesn't look like 'call into work sick day' is a national day..

Other days

Appreciate Yaself A Lil Extra Day

Boyfriend Day

Coffee Day

Tulip Day

Martini Day

Nail Polish Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Raise Awerness Of Zeus Day

Prosecco Day

Nae Nae Day