Pilot season is almost always January-March of every year. As well as the fall months. This is because TV shows want new shows to come out along side the new year. In fall, the same applies since fall is usually when the school year starts. Hope this helps.
Cosby - 1996 The Pilot Not the Pilot 2-9 was released on: USA: 10 November 1997
Bounty Wars - 2012 Pilot was released on: USA: 2012
Untitled Jerrod Carmichael Pilot - 2014 was released on: USA: 2014
Air Mail Pilot - 1928 was released on: USA: 11 February 1928
Geek Out Pilot - 2013 TV was released on: USA: 14 July 2013
Pilot Season - 2004 1-1 was released on: USA: 7 September 2004
Pilot Season - 2004 1-6 was released on: USA: 10 September 2004
The Pilot Season Survival Guide - 2011 was released on: USA: 18 January 2011 (DVD premiere)
The Kustomizer - 2004 Pilot was released on: USA: 2004
You Are Always a Pilot - 2014 was released on: USA: 2014
I Am an Exorcist - 2013 Pilot was released on: USA: 2013
Brother of the Pilot - 2015 was released on: USA: 2015
Untitled Jerrod Carmichael Pilot - 2014 Pilot was released on: USA: 2014
Mystery Pilot - 1926 was released on: USA: May 1926
Trashed - 1993 Pilot was released on: USA: March 1993
The Troop - 2009 Pilot was released on: USA: September 2009
Release the Awesomeness - 2012 Pilot 1-1 was released on: USA: 22 April 2012