I remember Night Walk, Night Ride, and Night Moves. I was working a wonky shift, and there was little on when I got home from work. They were strangely fascinating, and the music was good.
It sounds like the OP is from Toronto. If so, then he or she might remember The All-Night Show, which preceded the Night ___ series by a few years. It was, as the name implied, broadcast all night, from the normal signoff time at about 2:00 AM to 6:00AM or so, and was on the independent channel 47.
The premise was interesting. Apparently, the station’s night security guards, Chuck and Rochester, got so bored one night that they went into a studio, and played at broadcasting a show. Only they hit a switch accidentally, and really did broadcast out over the air. Oops! But they went with it anyway, and the show became as much of a hit as any show can be in that time slot.
The format was that of an after-school kiddie show, the kind that would be hosted by a cowboy, or a clown, or an astronaut, who showed cartoons. In this case, however, Chuck the security guard hosted, and he’d go into the station library and show old, almost-forgotten TV shows like Mr. Lucky and Peter Gunn. The Twilight Zone was often shown, also. As the cameraman, Rochester was never seen, but he was often heard, since he and Chuck would talk about the old shows, and what might be up next.
The show was undoubtedly popular with insomniacs, but it also built up a cult following among college students (I was one such), who would tune in during a break from an all-nighter, or who were looking for something to watch after an evening of partying. OP, do you remember The All-Night Show with Chuck the Security Guard?