Serial (radio and television) usually ran from Monday through Friday at exactly the same time every day. A show called The Smith Family which ran only one night a week on WENR in Chicago during the early 1930s was credited as the "great-granddaddy of the soap operas" by radio historian Francis Chase, Jr. One of the other shows that helped pioneer the daytime soap opera/serial was "The Guiding Light", which debuted on NBC radio in 1937, and then switched to CBS Television in 1952. "The Guiding Light" final episode aired on September 18, 2009, having a total of 15,762 episodes air on CBS. Some
Soap opera the past. Modern U.S. daytime soap operas largely stay true to the original soap opera format. The duration and format of storylines and the visual grammar employed by U.S. daytime serials set them apart from soap operas in other countries and from evening soap operas. Stylistically, UK and Australian soap operas, which are usually produced for early evening timeslots, fall somewhere in between U.S. daytime and evening soap operas. Similar to U.S. daytime soap operas, UK and Australian serials are shot on videotape, and the cast and storylines are rotated across the week's episodes so that each cast member will