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 opera parody programs "Echo Beach" premiered alongside its sister show, the comedy "Moving Wallpaper". Both "Echo Beach" and "The Royal Today" ended after just one series due to low ratings. Radio soap opera "Silver Street" debuted on the BBC Asian Network in 2004. Poor ratings and criticism of the program led to its cancellation in 2010. UK soap operas for many years usually only aired two nights a week. The exception was the original "Crossroads", which began as a weekdaily soap opera in the 1960s, but later had its number of weekly broadcasts reduced. Things started to change in 1989