general_fact: 2809 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 2809 is an uninteresting number.
trivia: 2809 is an uninteresting number.
historical_date: September 9th is the day in 1561 that the ultimately unsuccessful Colloquy at Poissy opens in an effort to reconcile French Catholics and Protestants.