The Simpsons have been on the air for 30 years. The series was first broadcast on television on Fox on 17 December 1989. Since then, 31 seasons of the series have been broadcast. If you want to binge watch all 673 episodes in one marathon session, you would have to plan for about 247 hours away from the real world. There is one animated comedy series with more airtime though: all the Pokémon episodes added together comes to 457 hours.