The series premiere of Mary Tyler Moore's eponymous situation comedy, about Mary Richards, a 31-year-old single woman who gets a job as the associate producer of the news department of the "nice, friendly little station WJM-TV in Minneapolis. It originally aired on CBS at 9:30 PM Eastern on Saturday, September 19, 1970. The series would be broadcast in the 9:30 PM Eastern Saturday time slot for iits first two seasons and at 9:00 PM Eastern time slot for its final five seasons.