What is the longest running opera on TV?
"As the World Turns" was the longest running soap opera on TV history. It ran from 1956 until it cancelled in 2010.
Guiding Light is the soap opera with the longest run. It began on radio in 1937 and made the transition to television in June 1952 until it ended in 2009, a 57 year run on TV (18,262 episodes) & a 15 year run on radio makes a total run of 72 years. However if you specify television runs, Coronation Street which debuted in December 1960, has matched GL's television run in 2017 with 57 years…
Hallmark Hall of Fame is considered the longest running prime time series with 61 seasons, followed by Wonderful World of Disney with 52 seasons. The longest continuously running TV show is PBS's Washington Week (debuting in 1967), although the longest on network TV is CBS's 60 Minutes (debuting in 1968). See Provided Link for further information