<Table> <Tr> <Th_colspan="2"> Guiding Light </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Also known as </Th> <Td> The Guiding Light GL </Td> </Tr> <Tr> <Th> Genre </Th> <Td> Soap opera </Td> </Tr> <Tr> <Th> Created by </Th> <Td> Irna Phillips </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Various </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> See below </Td> </Tr> <Tr> <Th> Starring </Th> <Td> Series cast </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United States </Td> </Tr> <Tr> <Th> Original language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of seasons </Th> <Td> NBC and CBS: 19 (radio) CBS: 57 (television; includes four years on both TV and radio) Total: 72 </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> NBC: 2,500 (radio) CBS: 15,762 (radio & TV) Total: 18,262 </Td> </Tr> <Tr> <Th_colspan="2"> Production </Th> </Tr> <Tr> <Th> Executive producer (s) </Th> <Td> Lucy Ferri Rittenberg (1952--75) Allen M. Potter (1976--82) Gail Kobe (1982--86) Joe Willmore (1986--87) Robert Calhoun (1987--91) Jill Farren Phelps (1991--95) Michael Laibson (1995--96) Paul Rauch (1996--2002) John Conboy (2002--04) Ellen Wheeler (2004--09) </Td> </Tr> <Tr> <Th> Producer (s) </Th> <Td> See below </Td> </Tr> <Tr> <Th> Location (s) </Th> <Td> Chicago, Illinois (1937--47) Los Angeles, California (1947--49) New York City, New York (1949--2009) </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 15 minutes (1937--68) 30 minutes (1968--77) 60 minutes (1977--2009) </Td> </Tr> <Tr> <Th> Production company (s) </Th> <Td> Procter & Gamble Productions (1952--2008) TeleNext Media, Inc. (2008--09) </Td> </Tr> <Tr> <Th> Distributor </Th> <Td> CBS Daytime TeleNext Media, Inc . </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> NBC Radio (1937--46) CBS Radio (1947--56) CBS Television (1952--2009) </Td> </Tr> <Tr> <Th> Original release </Th> <Td> NBC Radio: January 25, 1937 (1937 - 01 - 25)--November 29, 1946 (1946 - 11 - 29) CBS Radio: June 2, 1947 (1947 - 06 - 02)--June 29, 1956 (1956 - 06 - 29) CBS Television: June 30, 1952 (1952 - 06 - 30)--September 18, 2009 (2009 - 09 - 18) </Td> </Tr> <Tr> <Th_colspan="2"> Chronology </Th> </Tr> <Tr> <Th> Related shows </Th> <Td> "The Cradle Will Fall" </Td> </Tr> <Tr> <Th_colspan="2"> External links </Th> </Tr> <Tr> <Td_colspan="2"> Website </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Guiding Light </Th> </Tr>

How long was the guiding light on tv
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