Is it morning or is it night?

When one has been up all night long, into the wee hours of the morn, does it still classify as nighttime? If not, when exactly is the crossover between night and morning?

Regardless, I'm up. It's pushing past five, and I'm finally getting tired. I was just enjoying the quiet, the peacefulness by myself - doing, well, whatever it is that I want.

Baby and Mason are asleep, and I'm ALONE... glorious, glorious ALONE.