As the World Turns is an American television soap opera that aired on CBS for 54 years from April 2, 1956, to September 17, 2010. Irna Phillips created As the World Turns as a sister show to her other soap opera Guiding Light. Running for 54 years, As the World Turns holds the third-longest continuous run of any daytime network soap opera on American television, surpassed only by General Hospital and Guiding Light. As the World Turns was produced for the first 43 years in Manhattan and in Brooklyn from 2000 until 2010. Set in the fictional town of Oakdale, Illinois, the show debuted on April 2, 1956, at 1:30 pm EST. Prior to that date, all serials had been 15 minutes in length. As the World Turns and The Edge of Night, which premiered on the same day at 4:30 pm EST, were the first two to be 30 minutes in length from their premiere. At first, viewers were indifferent to the new half-hour serial, but ratings picked up in its second year, eventually reaching the top spot in the daytime Nielsen ratings by fall 1958. In 1959, the show started a streak of weekly ratings wins that was not interrupted for over 12 years.