In September 1973, WSM-TV decided to fill the 6:30–7 p.m. time slot opened up by the Prime Time Access Rule in 1971 by expanding its 6 p.m. newscast to one hour. This has proven so successful that to this day WSMV programs a newscast from 6 to 7 p.m. (although it is now broken up into two 30-minute segments). Upon the success of the expanded 6 p.m. newscast on channel 4 (and after years of low-rated syndicated offerings in the 6:30 slot), WTVF followed suit in 1989 by expanding its 6 p.m. newscast to one hour. WSMV and WTVF are among the few stations in the Central Time Zone to run newscasts at 6:30 (stations elsewhere have attempted it since the 1970s with varying degrees of success). WKRN is the only traditional network affiliate in the Nashville market to run only a half-hour of news at 6 p.m., with "Wheel of Fortune" (hosted by former WSM personality Pat Sajak) airing at 6:30.