Oops, it doesn't look like 'argue with strangers on twitter while nothing gets done day' is a national day..

Other days

Lumpy Rug Day

Boyfriend Day

Slime Day

Blanket Fort Day

Coffee Day

Pumpkin Day

One Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Tell Ur Crush You Like Them Day

Stud Day