I'll never forget Oct 1987!Here in the UK, Wednesdays, 6pm, BBC2 is probably indelibly marked in fans minds. This was where TNG premiered, 26th September 1990. And every new episode was shown on that day and time. Even repeats of the series later on, tended to stick with Wednesday (as well as other days of the week as well).
Sky TV obtained the satellite rights to the show, and seasons 4-6 actually received their UK premiere in the summer of '93 Monday-Friday at 5pm (repeated at 10pm).
At that moment I had no idea it would change how we all think of the franchise.