![The Arctic Circle is one of the five major circles of latitude that mark maps of the Earth. As of 16 February 2015, it runs 66°33′45.6″ north of the Equator.
The region north of this circle is known as the Arctic, and the zone just to the south is called the Northern Temperate Zone. The equivalent polar circle in the Southern Hemisphere is called the Antarctic Circle.
The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the sun can remain continuously above or below the horizon for 24 hours (at the June solstice and December solstice respectively). North of the Arctic Circle, the sun is above the horizon for 24 continuous hours at least once per year (and therefore visible at midnight) and below the horizon for 24 continuous hours at least once per year (and therefore not visible at noon). On the Arctic Circle those events occur, in principle, exactly once per year, at the June and December solstices, respectively. However, in practice, because of atmospheric refraction and mirages, and because the sun appears as a disk and not a point, part of the midnight sun may be seen on the night of the northern summer solstice up to about 50′ (90 km (56 mi)) south of the Arctic Circle; similarly, on the day of the northern winter solstice, part of the sun may be seen up to about 50′ north of the Arctic Circle. That is true at sea level; those limits increase with elevation above sea level, although in mountainous regions there is often no direct view of the true horizon.
The position of the Arctic Circle is not fixed. It directly depends on the Earth's axial tilt, which fluctuates within a margin of 2° over a 40,000-year period,[2] notably due to tidal forces resulting from the orbit of the Moon. The Arctic Circle is currently drifting northwards at a speed of about 15 m (49 ft) per year; see Circle of latitude for more information.
#snow](https://images.trvl-media.com/place/6140564/a9f9449e-bab4-40a6-a9a1-5356b0cc2aa8.jpg?impolicy=resizecrop&rw=1920&ra=fit&ch=480)
相片由 Sharrie Shaw 提供
尼基斯基酒店
設有免費取消選項，以防計劃有變
每晚住宿都可賺取獎賞
會員價預訂慳一筆
尼基斯基住宿推介
了解尼基斯基更多
尼基斯基的基奈國家野生動物保護區及小屋湖等景點遠近知名，值得一遊。此城市的景點各適其適，有科特西納路和北半島休憩區等名勝，盡在幽靜背景下等你遊訪。
![The Arctic Circle is one of the five major circles of latitude that mark maps of the Earth. As of 16 February 2015, it runs 66°33′45.6″ north of the Equator.
The region north of this circle is known as the Arctic, and the zone just to the south is called the Northern Temperate Zone. The equivalent polar circle in the Southern Hemisphere is called the Antarctic Circle.
The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the sun can remain continuously above or below the horizon for 24 hours (at the June solstice and December solstice respectively). North of the Arctic Circle, the sun is above the horizon for 24 continuous hours at least once per year (and therefore visible at midnight) and below the horizon for 24 continuous hours at least once per year (and therefore not visible at noon). On the Arctic Circle those events occur, in principle, exactly once per year, at the June and December solstices, respectively. However, in practice, because of atmospheric refraction and mirages, and because the sun appears as a disk and not a point, part of the midnight sun may be seen on the night of the northern summer solstice up to about 50′ (90 km (56 mi)) south of the Arctic Circle; similarly, on the day of the northern winter solstice, part of the sun may be seen up to about 50′ north of the Arctic Circle. That is true at sea level; those limits increase with elevation above sea level, although in mountainous regions there is often no direct view of the true horizon.
The position of the Arctic Circle is not fixed. It directly depends on the Earth's axial tilt, which fluctuates within a margin of 2° over a 40,000-year period,[2] notably due to tidal forces resulting from the orbit of the Moon. The Arctic Circle is currently drifting northwards at a speed of about 15 m (49 ft) per year; see Circle of latitude for more information.
#snow](https://images.trvl-media.com/place/6140564/a9f9449e-bab4-40a6-a9a1-5356b0cc2aa8.jpg?impolicy=fcrop&w=900&h=675&p=1&q=high)
相片由 Sharrie Shaw 提供
公開相片由 Sharrie Shaw 提供
尼基斯基的基奈國家野生動物保護區及小屋湖等景點遠近知名，值得一遊。此城市的景點各適其適，有科特西納路和北半島休憩區等名勝，盡在幽靜背景下等你遊訪。