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Sunlight is around 6 hours per day by the end of October. When the sun sets on November 18, it stays below the horizon until January 23, resulting in a polar night that lasts about 66 days. [38] When the polar night starts, about 6 hours of civil twilight occur, with the amount decreasing each day during the first half of the polar night.
For instance, in Fairbanks, Alaska, which is south of the Arctic Circle, the Sun sets at 12:47 a.m. at the summer solstice. This is because Fairbanks is 51 minutes (1 hour and 51 minutes at Daylight Savings Time) ahead of its idealized time zone (as most of the state is in one time zone) and Alaska observes daylight saving time.
The first measure indicates the general sunniness of a location compared with other places, while the latter allows for comparison of sunshine in various seasons in the same location. [1] Another often-used measure is percentage ratio of recorded bright sunshine duration and daylight duration in the observed period.
Point Barrow or Nuvuk is a headland on the Arctic coast in the U.S. state of Alaska, 9 miles (14 km) northeast of Utqiagvik (formerly Barrow). It is the northernmost point of all the territory of the United States, at 71°23′20″N 156°28′45″W / 71.38889°N 156.47917°W / 71.38889; -156.47917 ( Point Barrow ) , 1,122 ...
Ennis, Alaska is modeled on real towns like Utqiaġvik, formerly known as Barrow. Ennis isn't a real town, but the show was based on a real area in the northernmost state: North Slope Borough, Alaska.
Relationship of Earth's axial tilt (ε) to the tropical and polar circles. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the Sun can remain continuously above or below the horizon for twenty-four hours; as a result, at least once each year at any location within the Arctic Circle the centre of the Sun is visible at local midnight, and at least ...
A contour plot of the hours of daylight as a function of latitude and day of the year, using the most accurate models described in this article. It can be seen that the area of constant day and constant night reach up to the polar circles (here labeled "Anta. c." and "Arct. c."), which is a consequence of the earth's inclination.
The Alaska Time Zone observes standard time by subtracting nine hours from Coordinated Universal Time (UTC−09:00). During daylight saving time its time offset is eight hours ( UTC−08:00 ). The clock time in this zone is based on mean solar time at the 135th meridian west of the Greenwich Observatory .