Guys, I just noticed something.
If this was the bite of '87, then how come FNaF 2 took place in 1987? I mean sure, we found out what exactly caused the bite and who did it, but in all seriousness, was THIS the bite, or was the one in FNaF 2 the bite?
Take a look at why the place was closed down.

As you can see, the paper says, "scrapped due to possible malfunctions", which would most likely mean that is when the bite of '87 happened. Not enough to convince you? The phone guy says something about the first restaurant in Night 5.
"Uh, I think the name of the place was..."Fredbear's Family Diner" or something like that. It's been closed for years though, I doubt we'll be able to track anybody down" -Phone guy Now with that quote, it can be predicted that FNaF 4 took place either in someones nightmare during the events of FNaF 2, or that it was before FNaF 2, but in the same year, more so, maybe the spring time.