In the mid-1960s, it adopted the "Eyewitness News" format that had been pioneered at Philadelphia sister station KYW-TV. WBZ was the first Boston station to have a regularly-scheduled late afternoon news program. In the 1970s, the station aired "First 4 News" at 5:30 p.m., anchored initially by Jack Williams and Pat Mitchell, then by Gail Harris. On July 21, 1979, a new format premiered in this time slot, "Live on 4", a more informal program mixing elements of a daytime talk show with those of a traditional newscast, went on to become a trendsetter in the Boston market in the 1980s. First anchored by Gail Harris and Chris Marrou, it later had hosting assumed by many other WBZ staff members, including entertainment reporter Joyce Kulhawik and news anchor Chris Conangla in the mid-1980s. "Live on 4" gave a loose preview of the news to be covered more in depth at 6:00 p.m. and 11:00 p.m. with featuring stories on lifestyle, health and entertainment topics, along with live, in-studio guests.