Season 1 of NightWash premiered on October 14, 2001.

Season 2 of NightWash premiered on January 6, 2002.

Season 3 of NightWash premiered on March 30, 2003.

Season 4 of NightWash premiered on January 6, 2004.

Season 5 of NightWash premiered on January 2, 2005.

Season 6 of NightWash premiered on March 19, 2006.

Season 7 of NightWash premiered on November 5, 2009.

Season 8 of NightWash premiered on February 18, 2010.

Season 9 of NightWash premiered on January 6, 2011.

Season 10 of NightWash premiered on January 5, 2012.

Season 11 of NightWash premiered on January 10, 2013.

Season 12 of NightWash premiered on March 6, 2014.

Season 13 of NightWash premiered on January 7, 2016.

Season 14 of NightWash premiered on March 2, 2017.

Season 15 of NightWash premiered on September 13, 2019.