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Is 309 minutes as long as an American football game?

It's about five times as long as an American football game
The length of an American football game is about 60 minutes.
(per NFL rules; playing time only)
Per National Football League Rules, an American football game consists of four periods of 15 minutes each for a total of 60 minutes. 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 45 minutes of commercials in 2009.
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