<Li> On the abstract line of the Equator (90 ° latitude), the Sun's maximum altitude is great during the entire year, but it does not form a perfect right angle with the ground at noon everyday . In fact it happens two days of the year, during the equinoxes . The solstices are the dates that the Sun stays farthest away from the zenith but anyway also in those cases it's high in the sky, reaching an altitude of 66.56 ° either to the north or the south . All days of the year, solstices included, have the same length of 12 hours . </Li> <Li> Solstice day arcs as viewed from 20 ° latitude . The Sun culminates at 46.56 ° altitude in winter and 93.44 ° altitude in summer . In this case an angle larger than 90 ° means that the culmination takes place at an altitude of 86.56 ° in the opposite cardinal direction . For example, in the southern hemisphere, the Sun remains in the north during winter, but can reach over the zenith to the south in midsummer . Summer days are longer than winter days, but approximately the difference is no more than only two and a half hours . The daily path of the Sun is steep at the horizon the whole year round, resulting in a twilight of only about one hour and 20 minutes in the morning and in the evening . </Li> <Li> Solstice day arcs as viewed from 50 ° latitude . During the winter solstice Sun does not rise more than 16.56 ° above the horizon at midday, but 63.44 ° in summer solstice above the same horizon direction . The difference in the length of the day between summer and winter, from here to the north, begin to be striking--slightly more than 8 hours at winter solstice, to more than 16 hours during the summer solstice . Likewise is the difference in direction of sunrise and sunset . At this latitude at midnight (around 1 a.m. with summer legal hour) the summer sun is 16.56 ° below the horizon, which means that astronomical twilight continues the whole night . This phenomenon is known as the grey nights, nights when it does not get dark enough for astronomers to do their observations of the deep sky . Above 60 ° latitude, the Sun would be even closer to the horizon, only 6.56 ° away from it . Then civil twilight continues almost all night, only a little bit of nautical twilight obviously around the local midnight . And above 66.56 ° latitude, there is no sunset at all, a phenomenon referred to as the midnight sun . </Li> <Li> Solstice day arcs as viewed from 70 ° latitude . At local noon the winter Sun culminates at − 3.44 °, and the summer Sun at 43.44 °. Said another way, during the winter the Sun does not rise above the horizon, it is the polar night . There will be still a strong twilight though . At local midnight the summer Sun culminates at 3.44 °, said another way, it does not set, it is the polar day . </Li>

Where does the sun rise in north america