math_fact: 584 is the number of ways to color the vertices of a triangle with 12 colors, up to rotation.
trivia: 584 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: August 6th is the day in 1942 that Queen Wilhelmina of the Netherlands becomes the first reigning queen to address a joint session of the United States Congress.