cognitivedissonance I've seen it. For years after I thought I had seen a UFO and then I discovered Wikipedia.
Don Taye I thought I saw something like this at a friends house one night just as a truck drove by hitting us with it's headlights. It was really good LSD.
Scrimmjob I saw something like this once. I was smoking a cig one night, watching this beautiful and crazy meteor shower. Then I saw a really huge bright one that made a noise like a ripping sound that eventually fizzled out. This kind of scared the shit out of me so I went back inside. I asked people about it the next day, and no one had any idea what I was talking about.
Cube I don't think night and day are defined by the level of illumination.