I know that in the 80s, a lot of local ABC, NBC, and CBS affiliates in major cities aired a full hour of news at 6pm and the national news at 7pm. Here in Boston, all the stations did that in the 80s, but in 1987, WNEV (now WHDH) moved the CBS Evening News to 6:30, and put Wheel and Jeopardy! on at 7:00. WCVB moved ABC World News to 6:30 in 1994, and in 1995, when WHDH and WBZ switched affiliations, they did not change the times of the national news. I believe WBZ carried the CBS Evening News at 7:00 until 2001 or so. I think there might be a handful of affiliates that still do this (KDKA and WJZ), but I'm not sure. Are there any others?