general_fact: 66430 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 66430 is an uninteresting number.
trivia: 66430 is an unremarkable number.
historical_date: November 16th is the day in 2000 that Bill Clinton becomes the first U.S. President to visit Vietnam since the end of the Vietnam War.