of late night jokes, on the afternoon of June 25, 2009 came after all but Kimmel had taped their shows, and as such, Kimmel was the only one to mention it that night). Scheduling Until September 2009 and again since spring 2010, the "Big Three television networks" (NBC, ABC and CBS) have all begun their late night programming at 11:35 p.m. Eastern Time each night; Fox, the fourth major U.S. network, aired only one day of late night programming (Saturday) starting at 11:00 p.m. This is a half-hour to one hour after the end of prime time to allow local stations to air newscasts, and most stations (with a few exceptions) do. ABC, CBS and NBC all begin their late night schedules with comedy and interview-based talk shows, however only CBS and NBC air additional lead-out talk shows beginning in the 12:35 a.m. Eastern Time slot; on ABC, the newsmagazine Nightline serves as the lead-out to Jimmy Kimmel Live!. For a brief time in Fall 2009, NBC followed a significantly different model starting in September of that year, following severe losses of audience for its scripted dramas. Jay Leno, formerly the host of NBC's long-running The Tonight Show franchise, had moved his show to 10:00 p.m. Eastern Time, ahead of the local newscasts on most stations in a time slot that competes with CBS's and ABC's prime time programming (though Fox affiliates would have cut to post-primetime news or syndicated sitcom reruns by this time). Beginning in September 2009, Leno hosted The Jay Leno Show, which was mostly similar to The Tonight Show with Jay Leno with a few adjustments. This made way for Conan O'Brien (formerly the host of Late Night with Conan O'Brien, another long-running NBC late night franchise) to take over The Tonight Show with Conan O'Brien, while Jimmy Fallon has assumed hosting duties for Late Night with Jimmy Fallon. The remaining late night programs (Poker After Dark and Last Call with Carson Daly) remained as is, and NBC warned its affiliates not to preempt or delay Leno for local news. After affiliates' fears of significantly lower ratings for local news were in fact realized, NBC announced it would indeed cancel its 10:00 p.m. experiment and move Leno back to his traditional start time of 11:35 (originally by moving The Jay Leno Show, before rejoining as host of The Tonight Show outright due to problems over the