Sleeping on planets with very long days
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Consider a planet where a day, that is to say the amount of time a specific (roughly equatorial) point is in sunlight is much longer than on earth. A humanoid race has evolved on this planet. You can assume that days and nights are roughly the same length as each other.
On Earth we have evolved and adapted to a 24 hour day, our sleep cycles traditionally follow the sun.
If a species evolved on a planet with much longer days (for example daylight cycles of a week or more) would the race evolve to stay awake for much longer periods of time or would they sleep during the daytime?
This post was sourced from https://worldbuilding.stackexchange.com/q/7263. It is licensed under CC BY-SA 3.0.
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