CBS This Morning (CTM) is an American morning television program that aired on CBS from November 30, 1987, to October 29, 1999, and again from January 9, 2012, to September 6, 2021. The program was aired from Monday through Saturday. It aired live from 7:00 a.m. to 9:00 a.m. in the Eastern Time Zone. On weekdays, it aired on a tape-delay in the Central and Mountain Time Zones; stations in the Pacific, Alaska and Hawaii Time Zones received an updated feed with a specialized opening and updated live reports. Stations outside the Eastern Time Zone carried the Saturday broadcast at varied times. It was the tenth distinct morning news-features program format that CBS has aired since 1954, having replaced The Early Show on January 9, 2012. The program emphasized general national and international news stories and in-depth reports throughout each edition, although it also included live in-studio and pre-taped interviews. The format was chosen as an alternative to the soft media and lifestyle-driven formats of competitors Today and Good Morning America following the first hour or half-hour of those broadcasts, in an attempt to give the program a competitive edge with its infotainment format. (CBS has historically placed a distant third in the ratings among the network weekday morning shows.) On August 31, 2021, CBS announced that the weekday program would be replaced with the reformatted CBS Mornings effective September 7, while the Saturday edition of CTM was renamed CBS Saturday Morning on September 18, 2021, completing the transition. History First incarnation and The Early Show The original incarnation of CBS This Morning made its debut on November 30, 1987, with hosts Harry Smith, former Good Morning America news anchor Kathleen Sullivan, and Mark McEwen, a holdover from the show's infotainment-intensive predecessor The Morning Program as weather caster and announcer. Sullivan was replaced by Paula Zahn on February 26, 1990. Beginning on October 26, 1992, in an effort to prevent affiliates from dropping the program, CBS increased the amount of time available during the broadcast for local stations, most of which broadcast their own early morning news programs before the national news begins. Nevertheless, several CBS stations in top-ranking markets, like then-affiliates WJBK in Detroit, WAGA in Atlanta, WHDH in Boston and KDKA in Pittsburgh (as of 2022, still a CBS station) dropped the program in favor of either local or syndicated programming. Another station, KPIX in San Francisco, planned