As the World Turns (often referred to as ATWT) 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 second-longest continuous run of any daytime network soap opera on American television, surpassed only by Guiding Light. As the World Turns was produced in New York City for all of its time (its first 43 years in Manhattan and in Brooklyn from 2000 until 2010).