of the core CBC Radio One schedule, although some programs may air in abbreviated versions (see CBC North for further information). The network also airs some programming syndicated from American public broadcasting services such as National Public Radio and Public Radio Exchange, including programs from the now defunct Public Radio International which merged with PRX in 2019, This American Life, Radiolab and the news series The World and, previously, The State We're In. With the exceptions of This American Life, which airs on Sunday nights at 11:00 p.m. and Snap Judgement which airs on Monday nights at 11:00 p.m., all other non-Canadian content airs after 1:00 a.m. as part of the CBC Radio Overnight programming block. Sirius XM The Radio One feed on Sirius XM Satellite Radio largely follows the Eastern Time schedule, and has no local programming, with repeats of other shows in time slots that would normally be occupied by local programming. As a consequence of using a single feed, most national programming outside the Eastern Time Zone is heard earlier or later than the regional outlet on terrestrial radio - for example: The World at Six is heard on Sirius XM as early as 3:00 p.m. Pacific Time in Vancouver, and as late as 7:30 p.m. Newfoundland Time in St. John's. Programs produced by NPR and PRX are not heard on CBC Radio One's Sirius XM service, as these are covered by channels programmed by NPR and PRX. In addition, the programs featured on CBC Radio Overnight are not heard on the Sirius XM feed. In these cases, as with the regional programming slots, repeats of earlier national programs are heard, as well as some CBC Music programming (such as Deep Roots). Podcasting Many CBC Radio programs are also distributed in podcast versions. In addition, the service has also created several programs which are distributed exclusively as podcasts. Original podcasts include Campus, a program devoted to stories about college and university student life; Someone Knows Something, which presents information about criminal cold cases; Uncover, an investigative journalism project; Missing and Murdered, which delves into stories of missing and murdered Indigenous women; and Back Story, in which foreign correspondents talk about the news stories they have covered. Selected episodes from the podcasts may also sometimes air terrestrially on CBC Radio One as substitute programs, or rerun material for regular programs such as The Current, such as during the