the Pacific Time Zone feed.) From June 1996 until September 2006, the presentations were marketed as the "Saturday Night Guarantee" to denote a promise of "a new movie [premiering] every Saturday night" all 52 weeks of the year. (HBO had highlighted said "guarantee" in promotions for the Saturday premiere night dating to January 1994.) Before settling on having Saturday serve as its anchor premiere night, the scheduling of HBO's prime time film premieres varied between Saturday, Sunday and Wednesday, depending on competition from broadcast fare during the traditional network television season. First-run theatrical films debut on average from ten months to one year after a film's initial theatrical run has concluded, and no more than six months after their DVD or digital VOD download release. COVID-19-related postponements of newer theatrical releases by its distribution partners caused HBO to reduce the frequency of scheduled theatrical premieres in September 2020; since then, the Saturday 8:00 slot has been occupied by premieres of original specials and documentaries (scheduled at least once per month) and, since late December 2020, airings of older hit movies (mainly films released between 1979 and 2015) distributed under library content deals during gap weeks in the monthly premiere schedule. HBO and sister channel Cinemax (as well as their associated streaming platforms) maintain exclusive licensing agreements to first-run and library film content from the following movie studios and related subsidiaries: Warner Bros. Pictures Group (since January 1987); Subsidiaries: New Line Cinema (since January 2005), Warner Animation Group (since January 2014), DC Films (since May 2017), and Castle Rock Entertainment (since January 2003); Library content: Warner Independent Pictures (2003–2008 releases); 20th Century Studios (exclusive since January 1989 (select titles since November 2021); non-exclusive, 1986–1988 (select titles since November 2021)); Subsidiaries: 20th Century Animation (since May 1998), 20th Century Family (since January 2018), New Regency Productions (since January 1995, as an independent studio) and Searchlight Pictures (since January 1995); Library content: Fox Atomic (2007–2009 releases), Blue Sky Studios (2003–2020 releases) and Fox 2000 Pictures (1998–2020 releases); Universal Pictures (exclusive since January 2003; non-exclusive, 1984–1990); Subsidiaries: Universal Animation Studios (since January 2007), DreamWorks Animation (co-productions; since January 2011), Working Title Films (since January 2003), Illumination (since January 2011) and Focus Features (since May 2003); Library content: Savoy Pictures (1993–1997 releases) and Gramercy Pictures (1992–2001 and 2015–2016 releases); HBO also maintains sub-run agreements—covering television and streaming licensing of films that have previously received broadcast