Years ago in a magazine, i red an article about how much better, and specifically, more suitable for living is the nighttime than the daytime. Which is an issue, of course, arguable. In a book also, how the human vision is made for nightlight and not for the daylight which is difficult to adjust in such brightness.
It is difficult, here in psynews, to understand in which global timezone a user is living, by his times of presence. The reason is none other than that many persons don't have a regular time schedule of wakefulness.
Many people adjust their living to their work-time, which for most is in daytime. But others that the work-time issue doesn't urge them, prefer to live in the night. Also many artists feel more comfortable to live and create in the night.