The Late Show is an American late-night television talk and variety show on CBS. It first aired in August 1993 with host David Letterman, who previously hosted Late Night with David Letterman on NBC from 1982 to 1993. Letterman's iteration of the program ran until his retirement on May 20, 2015. Comedian Stephen Colbert, best known for his roles on Comedy Central programs The Daily Show and The Colbert Report, assumed hosting duties in September. The show originates from the Ed Sullivan Theater in the Theater District of Manhattan, New York, and airs live to tape in most U.S. markets at 11:35 p.m. Eastern and Pacific, 10:35 in the Central and Mountain time zones.