not sure if it's a coincidence OR some connected lore...

Uhm, actually,
Evan aka "the crying child" is actually the "bite of '83" victim. In 1987 a man named Jeremy dies on this date (not the scout Jeremy, a nightguard named Jeremy)

HE DOES NOT DIE!!
Quot from phone guy, "They used to walk around during the day too, but then there was the bite of '87. Yeah. It's amazing the human body can live without the frontal lobe, you know.

That’s when Jeremy (Scout TF2) dies, and also when the bite happens in case you don’t know