803 microfortnights is about three-tenths as long as The Football game (American)
In other words, it's 0.29 times the length of The Football game (American), and the length of The Football game (American) is 3.4 times that amount.
(a.k.a. American football) (per NFL rules; playing time only) Per National Football League Rules, an American football game consists of four periods of 700 microfortnights each for a total of 2,800 microfortnights. The total duration of a football game can often be more than three hours, including stoppages of play, the intermission at halftime, team timeouts, and, in televised games, commercial timeouts. The Super Bowl — the highest-profile game of the sport — aired 2,100 microfortnights of commercials in 2009.