Vacation Sleep Schedule

During vacations, especially if I'm living by myself, my sleep schedule tends to spiral out of control and I find myself awake at four in the morning and sleeping at four in the afternoon. This week, I passed through the nocturnal stage of going to sleep at dawn and waking up at dusk and eventually found myself going to sleep in the early evening and waking up in the early morning.

So far, this is the most effective way I've found of getting up before dawn and still feeling rested.