History
With the beginning of scheduled television in 1936, television programming was initially only concerned with filling a few hours each evening – the hours now known as prime time. Over time, though, television began to be seen during the daytime and late at night, as well on the weekends. As air time increased, so did the demand for new material. With the exception of sports television, variety shows became much more important in prime time.Scheduling strategies
Lead-ins and lead-outs
Broadcasters may schedule a program to air before or after a widely viewed tent-pole program, such as a popular series, or a special such as a high-profile sporting event (such as, in the United States, the Super Bowl), in the hope that audience flow will encourage the audience to tune-in early or stay for the second program. The second program is usually one that the broadcaster wants to promote to a wider audience, such as a new or lower-profile series. Sometimes, a lower-profile program may be scheduled between two tentpole programs, a technique known as hammocking. Lead-outs can sometimes help to launch new programs and talent; in 1982, NBC premiered '' Late Night with David Letterman'' as a lead-out for its long-running late-night talk show '' The Tonight Show Starring Johnny Carson''. Characterized by an off-beat style appealing to young adults, ''Late Night'' helped launch the career of host David Letterman, and influence later entries into the genre. Despite Carson's endorsement of Letterman as a successor following his 1992 retirement, NBC chose Jay Leno instead, and Letterman departed for CBS to host a spiritual successor—'' Late Show with David Letterman—''beginning in the 1993–94 season. ''Late Night'' would continue as a franchise with hosts such as Conan O'Brien and Jimmy Fallon—both of whom would later go on to host ''The Tonight Show''. The same season, Fox scheduled '' The X-Files'' as a lead-out for its sci-fi western ''The Adventures of Brisco County Jr.'', with the expectation that ''Brisco County Jr.'' would serve as the anchor of its Friday-night lineup. However, ''The X-Files'' proved to be significantly more successful, and would eventually run for nine seasons. By contrast, viewership for ''Brisco County Jr.'' declined throughout the season, and the show was cancelled. Fox attempted to use other sci-fi shows as a lead-in for ''The X-Files'' (such as '' Sliders'' and '' VR.5''), but they were similarly unsuccessful. A weak lead-in can have an impact on the viewership of programs that follow; NBC's 2009 attempt to strip the talk show '' The Jay Leno Show'' (a spiritual successor to Leno's tenure of ''The Tonight Show'' after Conan O'Brien succeeded him) in a 10:00 p.m. ET/PT timeslot proved detrimental to the viewership of late local newscasts on its affiliates. NBC subsequently announced plans to shorten ''The Jay Leno Show'' to a half hour and move it to 11:35 p.m. ET/PT in late-February 2010, displacing ''The Tonight Show'' from its traditional timeslot. This proposal led to a public conflict between O'Brien and NBC, and ultimately resulted in his departure from the network, and the reinstatement of Jay Leno as host of ''The Tonight Show''.Blocks
Block programming is the practice of scheduling a group of complementary programs together. Blocks are typically built around specific genres (i.e. a block focusing specifically on sitcoms), target audiences, or other factors, with their programming often promoted collectively under blanket titles (such as ABC's " TGIF" lineup, All TV's " Jeepney TV sa All TV", and NBC's " Must See TV").Bridging
Bridging is the practice of discouraging the audience from changing channels during the "junctions" between specific programs. This can be done, primarily, by airing promos for the next program near the end of the preceding program, such as during its credits, or reducing the length of the junction between two programs as much as possible (hot switching). The host of the next program may similarly make a brief appearance near the end of the preceding program (sometimes interacting directly with the host) to provide a preview; in news broadcasting, this is typically referred to as a "throw" or "toss". A bridge was used by ABC between '' Roseanne'' and the December 1992 series premiere of '' The Jackie Thomas Show'', a new sitcom co-created by Roseanne and Tom Arnold of ''Roseanne'' fame. A scene of the Connor family watching its opening on TV seamlessly transitioned into the program itself, with no junction in between. ABC commissioned a minute-by-minute Nielsen ratings report, which showed that the majority of viewers from ''Roseanne'' had been retained during the premiere.Carter, Bill. "As Cliff and Norm Drink Up, In Walks Seinfeld." ''Crossovers
Crossovers can be organized between multiple programs, in which a single storyline is extended across episodes of two or more separate programs. Typically, these involve programs that form a single franchise or shared universe, such as NBC's ''Counterprogramming
Counterprogramming is the practice of deliberately scheduling programming to attract viewers away from another, major program. Counterprogramming efforts often involve scheduling a contrasting program of a different genre or demographic, targeting viewers who may not be interested in the major program (such as a sporting event, which typically draws a predominantly-male audience, against an awards show that attracts a predominantly-female audience). Despite frequently being among the top U.S. television broadcasts of all time, the Super Bowl has had a prominent history of being counterprogrammed in this manner. One of the most prominent examples of this practice was Fox's 1992 airing of a special live episode of '' In Living Color'' against the game's halftime show. Programs can also be counterprogrammed by a direct competitor in the same time slot, often resulting in the two programs attempting to attract viewers away from each other through publicity stunts and other tactics; these tactics have most notably been seen in counterprogramming efforts surrounding professional wrestling, including the Monday and Wednesday Night Wars of the 1990s and 2020s respectively. In some cases, broadcasters may attempt to adjust their schedules in order to avert attempts at counterprogramming, such as getting a slightly earlier time slot (in the hope that once viewers have become committed to a show they will not switch channels), scheduling the competing program on a different night, or moving it to a different portion of the television season to avoid competition altogether.Dayparting
Dayparting is the practice of dividing the day into several parts, during each of which a different type program is appropriate for that time is aired. Daytime television shows are most often geared toward a particular demographic, and what theStripping
Stripping is the practice of running a single series in a consistent, daily time slot throughout the week, usually on weekdays. Daytime programs such as talk shows, court shows, game shows, andMarathons
A marathon is the scheduling of a continuous, long-term block of programming as an event, usually devoted to airings of a single program or film franchise. When conducted using television series, a marathon may either consist of episodes aired in sequential order, or focus on episodes sharing specific themes. Marathons are often aired on holidays (such as Syfy's annual '' The Twilight Zone'' marathon on New Year's Day, and Game Show Network airing a Charles Nelson Reilly-hosted marathon of game show series finales on New Year's Eve in 1999), as counterprogramming for major events airing on other channels (such as the Super Bowl in the U.S.), to lead into new episodes of a series, or to commemorate milestones/events surrounding a specific series or franchise (such as an anniversary, or the network's acquisition of rights to broadcast a certain series or franchise). Some marathons may focus on the roles of a specific entertainer; the death of Betty White resulted in several networks scheduling marathons of programming on or around January 17, 2022—which would have been White's 100th birthday—featuring her television appearances, such as Hallmark Channel airing a marathon of '' The Golden Girls'', and both Buzzr and Game Show Network airing marathons of her game show appearances. While longer marathons are typically reserved for major events, the popularization of binge-watching via streaming services in the 2010s led to many U.S. cable networks adopting marathon-like blocks of programs as their regular schedule. To compete with the release practices of streaming services, TBS premiered entire seasons of its police sitcom '' Angie Tribeca'' in a marathon format.'''' Similarly, free ad-supported streaming television (FAST) services often feature linear channels that are narrowly-focused towards specific programs or franchises.Theming
A broadcaster may temporarily dedicate all or parts of its schedule over a period of time to a specific theme. A well-known instance of a themed lineup is Discovery Channel's annual " Shark Week". Themed schedules are a common practice around major holidays—such as Valentine's Day, Halloween, and Christmas—where channels may air episodes of programs, specials, and films that relate to the holiday. Channels may also air marathons of their signature programs and film rights to target viewers who are on vacation. The U.S. basic cable networks Freeform ( 25 Days of Christmas, 31 Days of Halloween) and Hallmark Channel are known for broadcasting long-term holiday programming events. After experiencing success with its ''Countdown to Christmas'' event, Hallmark Channel adopted a practice of dividing its programming into similarly-branded "seasons" year-round, which are accompanied by thematically appropriate original series and television films. This strategy was part of an effort to position the channel as "a year-round destination for celebrations", and is synergistic with Hallmark Cards' core greeting card and collectibles businesses.Time slot
A show's time slot or place in the schedule could be crucial to its success or failure; generally, earlier prime time slots have a stronger appeal towards family viewing and younger demographics, while later time slots generally appeal more towards older demographics. Some time slots, colloquially known as " graveyard slots" or "death slots", are prone to having smaller potential audiences (with one such example in the U.S. being Friday nights), or insurmountable competition from highly rated series.See also
* Audience flow * Broadcast clock * Effects of time zones on North American broadcasting * Electronic media * Fall schedule * Interstitial program * Radio Computing Services – automated scheduling for radio stations * Timeshift channel * TV Guide * TV listingsReferences
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