Season 1 of 21 Days premiered on January 30, 2009.

Season 2 of 21 Days premiered on September 25, 2009.

Season 3 of 21 Days premiered on October 11, 2010.

Season 4 of 21 Days premiered on February 20, 2012.

Season 5 of 21 Days premiered on October 18, 2012.

Season 6 of 21 Days premiered on May 17, 2014.

Season 7 of 21 Days premiered on April 15, 2016.