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 "Sti skia tou hrimatos" ("Money Shadows"), which ran from 1990 to 1991. September 1991 saw the debut of "Lampsi" ("the Shining"), from creator Nicos Foskolos. The series would become Greece's longest-running soap opera. After the success of "Lampsi" came the short lived "To galazio diamandi" ("Blue Diamond") and "Simphonia siopis" ("Omertà"). "Lampsi" was canceled in June 2005 due to declining ratings. It was replaced by "Erotas" ("Love"), a soap that ran from 2005 to 2008. After that series ended, ANT1 abandoned the soap opera genre and focused on comedy series and weekly dramas. Greece's second longest-running soap is "Kalimera Zoi"