List of late-night American network TV programs
Late night television in the United States is the block of television programming intended for broadcast after 11:00 p.m. and usually through 2:00 a.m. Eastern and Pacific Time (ET/PT), but which informally can include programs aired as late as the designated overnight graveyard slot. By definition, late night programming begins on the Big Three television networks (ABC, NBC and CBS) at or shortly before 11:35 p.m. ET/PT, after the conclusion of local late-evening newscasts on their owned-and-operated and affiliated stations; late night programming on other broadcast networks , including Fox and PBS, and cable television channels start at 11:00 p.m. ET/PT. Some streaming services (such as Netflix, Hulu and Amazon Prime Video) have ventured into the late-night talk format at various times in recent years, though these programs are in-format-only, given that episodes are often released before the start of the designated time period. The following is a list of programs that are currently airing or have previously aired during the late night daypart on American television networks and streaming services. Past. Syndication. This list does not include the numerous game shows aired during  the mid-1980s that often received late-night clearances (such as the 1985 run of "The Nighttime Price Is Right") but were not expressly intended for late night audiences, nor does it include talk shows meant for daytime broadcast that air in late night slots in many markets due to either low ratings in their original timeslot, a lack of an available prime daytime slot or as a secondary run. Westinghouse Broadcasting (Group W). Programs syndicated by Group W Productions aired on Westinghouse-owned stations and were syndicated to other markets; merged with CBS in 1996 to become Eyemark Entertainment, and  folded into King World in 2000 by CBS.