Oops, it doesn't look like 'Mourning Enters Into Third day' is a national day..

Other days

Donate Your Hair Day

Polyamory Day

Slime Day

Pick Me Day

Law Day

My Little Pony Day

African Immigrant And Refugee Hiv And Hep Awareness Day

Tell Ur Crush You Like Them Day

Coffee Day

Raise Awerness Of Zeus Day