Season 1 of NightWash premiered on 2001-10-14.

Season 2 of NightWash premiered on 2002-01-06.

Season 3 of NightWash premiered on 2003-03-30.

Season 4 of NightWash premiered on 2004-01-06.

Season 5 of NightWash premiered on 2005-01-02.

Season 6 of NightWash premiered on 2006-03-19.

Season 7 of NightWash premiered on 2009-11-05.

Season 8 of NightWash premiered on 2010-02-18.

Season 9 of NightWash premiered on 2011-01-06.

Season 10 of NightWash premiered on 2012-01-05.

Season 11 of NightWash premiered on 2013-01-10.

Season 12 of NightWash premiered on 2014-03-06.

Season 13 of NightWash premiered on 2016-01-07.

Season 14 of NightWash premiered on 2017-03-02.

Season 15 of NightWash premiered on 2019-09-13.