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March 4, 2023 all-day
On March 4, 1947, WWDT-TV Channel 4, the first TV station in Michigan and sixth in the U.S., begins broadcasting. Owned by the Detroit News, the station’s call letters changed to WWJ-TV a couple months later. Initially, the station only broadcasted only 12 hours a week, Monday through Friday, with all but two hours devoted to test patterns and music. Of course, now the station is known as WDIV-TV Local 4.