I wonder how much time zones and seasons impact things. For example, in my city in the winter, it is often dark for 14 straight hours. No average, healthy indiv

I wonder how much time zones and seasons impact things. For example, in my city in the winter, it is often dark for 14 straight hours. No average, healthy individual would sleep for that long on a nightly basis. So, even if one slept for 7 hours at sunset, then there would still be 7 hours of darkness remaining upon awakening. Point being, if one slept for 4-5 hours, wake up for a similar chunk, and slept the same amount again, then that'd be a great way to pass the time one could likely not use to do outdoor labor.