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), 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, to commemorate milestones/events surrounding a specific series or franchise. Some marathons may focus on the roles of a specific entertainer; the death of Betty White resulted in multiple marathons of programming featuring her television appearances on and around January 17, 2022 (which would have been her 100th birthday), with Hallmark Channel airing a marathon of The Golden Girls, and the game show centric channels Buzzr and Game Show Network airing marathons of game show episodes that featured White as a celebrity guest. 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 part of their regular schedules. To compete with the release practices of streaming services, TBS premiered entire seasons of its police comedy Angie Tribeca in a marathon format. Similarly, free ad-supported streaming television (FAST) services often feature narrowly-focused linear channels devoted to 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 off from school or work. 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 holiday events such as Countdown to Christmas, Hallmark Channel adopted a practice of dividing its programming into themed seasons year-round, which are accompanied by thematically-appropriate original made-for-TV films and series. This strategy is 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