Loneliest Time of Day?

I've oftened pondered this question -- what is the loneliest time of day. I suspect it varies from person to person, but for me it's between the hours of about 2:30am and 4:00am. That's when the world seems to shut down. Along about 4:00-ish the world wakes back up.

Each year, when we go to close my cottage, we drive all night long. The traffic is fairly robust until midnight or so, and then it starts to taper off. But around 3:00am is when it gets eerie. I've driven miles on Canadian freeways where I was the only one -- nobody behind me, nobody in front, nobody coming from the other direction. Then, as I said, about 4:00, 4:30am things start picking up again.

But for that hour or so it's the loneliest.