The first season of the television comedy series 30 Rock originally aired between October 11, 2006 and April 26, 2007 on NBC in the United States. The season was produced by Broadway Video, Little Stranger and NBC Universal, and the executive producers were series creator Tina Fey, Lorne Michaels, Joann Alfano, Marci Klein, and David Miner. The series focuses on TGS with Tracy Jordan, a fictional sketch comedy series, and its head writer Liz Lemon, portrayed by Fey, as she juggles her job and her personal life. The season consisted of 21 episodes; 19 episodes were approximately 22 minutes long, and the other two episodes were approximately 26 minutes long due to NBC “supersizing” those episodes. The season moved timeslots three times during its run. The first four episodes aired on Wednesdays at 8:00 pm, the next thirteen episodes aired on Thursdays at 9:30 pm, and the final four episodes aired on Thursdays at 9:00 pm. The season received generally favorable reviews, and was nominated for ten Emmy Awards: six Primetime Emmy Awards and four Creative Arts Emmy Awards. Despite critical success, the series struggled in the ratings, and the first season averaged 5.8 million viewers for all 21 episodes. The 30 Rock first season DVD box set was released on September 4, 2007 in Region 1 format, and was released on March 17, 2008 in Region 2 format.