Season 0 of NCIS premiered on April 22, 2003.
Season 1 of NCIS premiered on September 23, 2003.
Season 2 of NCIS premiered on September 28, 2004.
Season 3 of NCIS premiered on September 20, 2005.
Season 4 of NCIS premiered on September 19, 2006.
Season 5 of NCIS premiered on September 25, 2007.
Season 6 of NCIS premiered on September 23, 2008.
Season 7 of NCIS premiered on September 22, 2009.
Season 8 of NCIS premiered on September 21, 2010.
Season 9 of NCIS premiered on September 20, 2011.
Season 10 of NCIS premiered on September 25, 2012.
Season 11 of NCIS premiered on September 24, 2013.
Season 12 of NCIS premiered on September 23, 2014.
Season 13 of NCIS premiered on September 22, 2015.
Season 14 of NCIS premiered on September 20, 2016.
Season 15 of NCIS premiered on September 26, 2017.
Season 16 of NCIS premiered on September 25, 2018.
Season 17 of NCIS premiered on September 24, 2019.
Season 18 of NCIS premiered on November 17, 2020.
Season 19 of NCIS premiered on September 20, 2021.
Season 20 of NCIS premiered on September 19, 2022.
Season 21 of NCIS premiered on February 12, 2024.
Season 22 of NCIS premiered on October 14, 2024.
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