Oops, it doesn't look like 'school in kerry saw three sets of twins and a set of triplets arrive for their first day' is a national day..

Other days

Me Day

Lumpy Rug Day

Stud Day

Blanket Fort Day

Raise Awerness Of Zeus Day

Slime Day

Hot Chocolate Day

Lisp Day

Tell Ur Crush You Like Them Day

Fiancee Day