How much daylight does Iceland get per year?
141710
During winter, daylight only gets 4-5 hours.\n\nDuring summer, daylight gets about 20 hours.
869394
Strongest UV radiation would have to be on 21. December each year, but it also depends on the weather. You often get clearer skies in January and February than in December and the months before, which means the risk of getting sunburned is realistically going to be higher then.
480630
Arizona and Hawaii!\n\n"Arizona (except some Indian Reservations), Hawaii, Puerto Rico, the U.S. Virgin Islands, and American Samoa have chosen not to observe Daylight Saving Time. This choice does make sense for the areas closer to the equator because the days are more consistent in length throughout the year."
780566
0.1 a minute 24-7-365\n\nyou know it is a big world out there with a lot of people and it is always day light some where
1185825
Funny, its the longest day here in Minnesota....you must be in the Southern Hemisphere\n\nIt sounds to me as if you are looking for something to tell you how much daylight there is each day.  Here is a cool little weather site that I go to check the weather (and daylight hours) in Negril, Jamaica. \n\nIt works for all major cities around the world.  Just type in your city, and country in the box in the upper left corner. It shows all these things: Actual Time, Civil Twilight, Nautical Twilight, Astronomical Twilight, Moon rise, Length Of Visible Light, and the length of Day.  It will even tell you how much the next day is different  like this: Tomorrow will be 0m 3s shorter. \n\n You can also change the date you are looking for and it will show you the astronomical data for that day. \n\n Try it....you'll like it!    Happy viewing!\n\nhttp://www.wunderground.com/global/stations/78387.html
58666
The graph would show a maximum daylight on June 21 with a minimum of dark, and a maximum of dark on December 21 with a minimum of daylight, but I doubt that it would be sinusoidal, because near the north pole there are extended periods of days with no darkness in the summer, indicating an oscillating function, but not sinusoidal.
808591
"You might ask, isn't the changing of the clocks a federal law? The answer is that although Daylight Saving Time was established by federal law in 1986, a state or area may choose not to observe it. Other areas in the U.S. that don't observe Daylight Saving Time are Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands. In Arizona, we just don't need another hour of sunlight!"
1040646
Northern parts of Alaska have six months of darkness, while the farther south you go, the less darkness.   I lived for a year on the northern tip of Baffin Island and the sun set on November 2 and didn't come up again until about February 4.   I think that might bre about equivalent to the most northern part of Alaska.  \n\nThis link gives the information you need.
916358
Not sure about annual total, but today the sun rose there at 6:57 AM and set at 4:50 PM... An annual total would average out to 12 hours of each, I would imagine
1031499
The midnight sun is a phenomenon occurring in latitudes north of the Arctic Circle and south of the Antarctic Circle where the sun is continuously visible for at least 24 hours once per year. Since there are no permanent human settlements south of the Antarctic Circle, the countries and territories whose population experiences it are limited to Alaska, northern Canada, Greenland, Iceland, northern Norway, Sweden and Finland, and extremities of Russia such as Novaya Zemlya and the cities of Murmansk, Norilsk and Vorkuta. A quarter of Finland's territory lies above the Arctic Circle, and as a consequence the midnight sun can be experienced — for more and more days, the further north one goes. At Finland's northernmost point, the sun does not set for 73 days during summer.
882266
Using Kepler's laws (third law):\n\nThe ratio between the T*T and a*a*a is a constant for our Sun and it applies to all objects rotating around it. where T is the period and a is the average distance. \nSo:\nT2=T1*(a2/a1)^(3/2) ;  ^ is used for power \nT2=1year *[  (4.5*10^9)  /  (1.5*10^9)  ]^(3/2)\nT2=164.3 years     \nTo make sure...see the links
329537
5 billion years or so.\n\nhttp://www.enchantedlearning.com/subjects/astronomy/sun/sundeath.shtml
675235
80 miles is not a significant variable to adjust for a difference in time of sunset.  The previous answers have stated curvature of the earth and referenced the tropics of Capricorn and cancer.  As of yet(when I started to answer) no one had brought up the incline plane of the Earths rotational axis.  It is due to the factors of the APPARENT position of the Sun, the curvature of the Earth and the Earths plane of rotational axis that we see 24 hours of daylight above the Antarctic and Arctic circles during specific times of the year.  \nThe reason of the differences of time of sunset would be a combination of plane of rotational axis, curvature of the Earth, and the time of year.  I seem to recall the 80 surface miles on the earth are equivalent to 1.526 degree of the apparent viewing depending where those 80 miles are.  as you get closer to the poles they would amount for a greater percentage of viewing angle.  \nAs to the temp difference where the towns are, latitude would effect a great deal of difference in the temperature, you need to give more finite guidelines if you want the specific reasons.
231076
The sun emits most of its radiation in a wavelength band between 0.1 and 4.0 micrometers (µm). The amount of radiation emitted from a body increases exponentially with a linear rise in temperature.\n \nSee fig 6f-2 in the link below\nhttp://www.physicalgeography.net/fundamentals/6f.html
976691
Many more than 24. The Microsoft Windows clock lists 75. \n\nYou must consider that some countries observe solar time. Some countries have time zones that are 30 minutes or even 15 minutes off of the rest of the world's hours. The southern hemisphere observes "daylight savings" or "summer" time during different months than the northern hemisphere.
662940
1801-2000 makes 200yrs. In a yr 365 days while in leap yr 366 days. In a century 25 leap yrs. This makes 50*366+(200-(25*2))*365 = 73050 times the sun rise in blore.
1066033
Somewhere around 10 million years. This should be compared to the sun, which will last a total of 10 *billion* years.\n\nHomework?