general_fact: 708 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 708 is the maximum value of n so that there exist 4 denominations of stamps so that every postage from 1 to n can be paid for with at most 12 stamps.
trivia: 708 is a boring number.
historical_date: December 8th is the day in 2010 that the Japanese solar-sail spacecraft IKAROS passes the planet Venus at a distance of about 80,800 km.