[joejerryronnie]

3am is when the really strange things happen. It's too late for most people to be out after a night at the bar and too early for even the earlybirds to be out and about. The last time I regularly saw 3am was my first couple of years in college when we were experimenting with things that make it tough to sleep.

[zuminator]

Makes sense. According to the data sim, from 3:15am to just before 4am, about 96% of people are asleep. So if you're up and about at that time, you're really seeing an unusual slice of the population.

[jumbopapa]

It's like the How I Met Your Mother said: Nothing good happens after 2am!