Guiding Light (known as The Guiding Light before 1975) is an American television soap opera that is listed in Guinness World Records as the longest-running drama in television in American history, broadcast on CBS for 57 years from June 30, 1952 until September 18, 2009, preceded by a 18-year broadcast on radio. Guiding Light is the longest running soap opera and the fifth longest running program in all of broadcast history; only the American country music radio program Grand Ole Opry (first broadcast in 1925), the BBC religious program The Daily Service (1928), the CBS religious program Music and the Spoken Word (1929), and the Norwegian children's radio program Lørdagsbarnetimen (first aired in 1924, cancelled in 2010) have been on the air longer.