Diane Sawyer and Charlie Gibson Take Over as Good Morning America Anchors (January 4, 1999) 

[ON TAPE: NEW GMA TEAM] 1999/01/04; GOOD MORNING AMERICA, NEW HOSTS DIANE SAWYER AND CHARLIE GIBSON
Good Morning America (often abbreviated as GMA) is an American morning television program that is broadcast on ABC. It debuted on November 3, 1975, and first expanded to weekends with the debut of a Sunday edition on January 3, 1993. The Sunday edition was canceled in 1999; weekend editions returned on both Saturdays and Sundays on September 4, 2004. The weekday and Saturday programs airs from 7:00 a.m. to 9:00 a.m. in all United States timezones (live in the Eastern Time Zone and on broadcast delay elsewhere across the country). The Sunday editions are an hour long and are transmitted to ABC's stations live at 7:00 a.m. Eastern Time, although stations in some media markets air them at different times. Viewers in the Pacific Time Zone receive an updated feed with a specialized opening and updated live reports. A third hour of the weekday broadcast aired from 2007 to 2008, exclusively on ABC News Now.
The program features news, interviews, weather forecasts, special-interest stories, and feature segments such as "Pop News" (featuring popular culture and entertainment news, and viral video), the "GMA Heat Index" (featuring a mix of entertainment, lifestyle and human-interest stories) and "Play of the Day" (featuring a selected viral video or television program clip). It is produced by ABC News and broadcasts from the Times Square Studios in New York City's Times Square district. The primary anchors are Robin Roberts, George Stephanopoulos and former New York Giants defensive end and former Live co-host Michael Strahan with entertainment anchor Lara Spencer and weather anchor Ginger Zee.[5]
Good Morning America has been the most watched morning show in total viewers and key demos each year since summer 2012.[6] GMA generally placed second in the ratings, behind NBC's Today, from 1995 to 2012.[7] It overtook its rival for a period from the early to mid-1980s with anchors David Hartman and Joan Lunden, from the late 1980s to the mid-1990s with Charles Gibson and Lunden, and in April 2012 with Roberts and Stephanopoulos.
Good Morning America won the first three Daytime Emmy Award for "Outstanding Morning Program", sharing the inaugural 2007 award with Today and winning the 2008 and 2009 awards outright.