math_fact: 8582 is the number of monoids of order 7 with 5 idempotents.
trivia: 8582 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
historical_date: June 30th is the day in 2009 that Yemenia Flight 626 crashes into the Indian Ocean, near Comoros, killing all but one of the 153 passengers and crew on board.