Question: how long does it take to watch all of ncis?
Answer: You would have to sit still for 38.6 days to work your way through the 14 seasons of NCIS, while fans of the The Simpsons get more bang for their buck; with shorter episodes, it would take just 28.6 days to watch all 29 seasons of the animated series if you were clocking in from nine-to-five.