Like many other things, that will depend on your precise location; the number of daylight hours in Presque Isle, Maine will be longer than the number of daylight hours in Newport, Rhode Island.
Here is the sunrise/sunset data for Presque Isle, ME on June 21, 2010:
Sunrise 4:38 a.m.
Sunset 8:29 p.m.
Twilight at this latitude adds about a half-hour at either end of the day.
So, it looks like about 15.8 hours. It would be somewhat less south of Presque Isle, and a little longer anywhere north of there.
The summer solstice happens. The summer solstice is also the winter solstice in the opposite hemisphere. On the summer solstice (on the northern hemisphere), the northern hemisphere is tilted most to the sun, giving 24 hours of light to the Arctic Circle and 24 hours of darkness to Antarctica on the day of it.
Areas north of the Arctic Circle A+
Astronomical twilight lasts all night in London during the summer solstice, however due to the urban light pollution it is hardly noticeable.
Two equinoxes (from the word 'equal') occur each year: one in the Spring, called the vernal equinox from a word for green-ness, and also the autumnal equinox in the Fall. On the day and hour of the equinoxes, days and nights are the same length of time.
The longest day of the year is June 21 or sometimes June 20, or June 22. It depends on the year. This year it will be June 21. The shortest day is 6 months later on December 21. But sometimes it occurs on December 22nd. This year it is December 21.
The summer solstice has the longest daylight hours. It occurs on July 21 or 22.
The summer solstice happens. The summer solstice is also the winter solstice in the opposite hemisphere. On the summer solstice (on the northern hemisphere), the northern hemisphere is tilted most to the sun, giving 24 hours of light to the Arctic Circle and 24 hours of darkness to Antarctica on the day of it.
Areas north of the Arctic Circle A+
No, there were no light pollution in London, England, it would not be pitch black at Summer Solstice because there is a full moon.================================Answer #2:At the time of the Summer Solstice, the sun's declination reaches roughly +23.5°.London's latitude is in the neighborhood of 51.5° North. That's still 15° southof the Arctic Circle, so the sun dips as much as 15° below London's horizon.That ought to be plenty to guarantee a very dark night.There's no connection between the Summer Solstice and the phases of the Moon.
it varies but we get about 8 hours daylight in winter extending to about 16 hours in summer
The solstice is day of the year with the longest period of light (the summer solstice) or the longest period of night (the winter solstice). The vernal equinox (spring) and autumnal equinox (fall) are the two days in the year in which the periods of light and periods of darkness are exactly the same duration.
They get shorter, because of the Winter Solstice. The winter solstice is when the shortest amount of day light hours acccure, and that day is on December 21. There is only 8 to 9 hours for a winter solstice.
Immediately after the summer solstice, the time between sunrise and sunset starts to diminish.
On a solstice, it is only at the equator that the hours of light and dark are equal. At other parts, they would be different with one of the Poles experiencing 24 hours of daylight and the other Pole experiencing no daylight. If it is the June solstice, then it is the North Pole with 24 hours of daylight and the South Pole with none, while it is the opposite in the December solstice. It is at the equinox that the amount of daylight and darkness hours are equal around the world.
The winter solstice (and the summer solstice) ocur for a very interesting reason. The sun 'moves' around the earth in a path that is very tilted to the earth's equator. When the sun is farthest on this path north of the equator, it is the summer solstice. And when it's farthesr south of the equator, it's the winter solstice. From the northern hemisphere, that is.
Apparently the change in temperature (colder or warmer) becomes more pronounced after the solstice, so although Midsummer is the point at which it is lightest, it becomes warmer afterwards.....
That would depend on where in the world you are. If you were at the North Pole there would be 24 hours of daylight, while at the South Pole there would be no daylight. At points in between the two poles the amount of daylight would be different. At the equator the amount of daylight hours would be about 12 hours.