Depends on where you are in the state. It varies quite a bit, but if you look up the newspapers for the city you're interested in, usually they'll tell you how much daylight there is that day in the...
It depends on your location on Earth. At the south pole, there are 0 hours of daylight on June 21... until ~13,000 years from now when the Earth's axis of rotation will precess to give it summer in...