hours of sunlight a day?

Question

How many hours of sunlight does every location on Earth receive every day (averaged over an entire year)?

Answer 1

I agree with the 12 hour answer, if you ignore clouds. In other words, the Sun is above the horizon 50% of the time, averaged over a year, for any location on Earth. At the north pole this would be 6 months of daylight followed by 6 months of night every year. At the equator it would be 12 hours of daylight and 12 hours of night every day of the year. At intermediate latitudes, there is more than 12 hours of daylight in summer and less in winter, but it averages out to 50% of the time over a year.

Answer 2

The other answers have failed to take into account that orientation of Uranus' rotational axis with respect to the Sun changes over the 84 Earth year "year" of Uranus. Halving the rotational period of Uranus gives the WRONG answer EXCEPT when Uranus is around the equivalent of an equinox. The hours of sunlight at a particular location on Uranus varies with location and where Uranus is in its orbit, JUST LIKE ON EARTH.

Answer 3

12 hours

Averaged over the whole year every where has half its time in light and half in dark.

Answer 4

12.5 hours