Guiding Light (known as The Guiding Light before 1975) is an American radio and television soap opera. It 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, overlapping a 19-year broadcast on radio from 1937 to 1956. With 72 years of radio and television runs, Guiding Light is the longest running soap opera, ahead of General Hospital, and is the fourth-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 (1924–2010) have been on the air longer.