4 o'clock: at night?

It is 4 o'clock and nearly dark. There maybe multiple reasons why it is already dark. The forecasted rain, the daylight savings ended, the end of the world. Whatever. All I know is that when I look out my window I see a streetlight on, surrounded by darkness. If I look up, it is a little less dark, but mostly gray.
If I turn out all the lights in my room, it gets pretty dark. For some reason it just doesn't seem right. IT'S ONLY 4 O'CLOCK. It should be afternoon. Not nearly night.