Oops, it doesn't look like 'rare disease officea very good day' is a national day..

Other days

Carpenters Day

Hot Chocolate Day

Ruby Day

Kiss A Brunette Day

Bonang Day

Chocolate Milkshake Day

Lisp Day

Tell Ur Crush You Like Them Day

Lost Sock Memorial Day

African Immigrant And Refugee Hiv And Hep Awareness Day