The circle of illumination always includes 180 degrees of latitude (and 180 degrees of longitude).
Considering latitude . . . whatever amount of latitude falls outside of the circle because of
the Earth's so-called "tilt" is made up for by the circle extending the same number of degrees
past the pole on the other end.
Examples:
-- Equinoxes: Illumination from 90 degrees south to 90 degrees north latitude. Total = 180 degrees of latitude.
-- June solstice: from 66.5 degrees south, over the north pole, past 90 degrees north,
and back down the other side to 66.5 degrees north. Total = 180 degrees of latitude.
-- December solstice: fropm 66.5 degrees north, under the south pole, past 90- degrees south,
and back up the other side to 66.5 degrees south. Total = 180 degrees of latitudfe.
The imaginary circle that runs through Canada at 66.5 degrees north latitude is the Arctic Circle. It marks the southernmost latitude where the sun can remain continuously above or below the horizon for 24 hours during the summer and winter solstices, respectively.
The line of latitude located about 66.5 degrees north of the equator is the Arctic Circle. This imaginary line marks the northernmost point where the sun can remain continuously above or below the horizon for 24 hours during the summer and winter solstices, respectively.
The imaginary line located at 66.5 degrees south latitude is called the Antarctic Circle. This is the southernmost latitude at which the sun can remain continuously above or below the horizon for 24 hours during the summer and winter solstices, respectively. It marks the boundary of the Antarctic region.
That's close to an approximate latitude for the Antarctic Circle.
The Antarctic Circle is located at approximately 66.5 degrees south latitude.
At the moments when the sun is at the Summer and Winter Solstices ... on June 21 and December 21.
The imaginary circle that runs through Canada at 66.5 degrees north latitude is the Arctic Circle. It marks the southernmost latitude where the sun can remain continuously above or below the horizon for 24 hours during the summer and winter solstices, respectively.
the circle that divides the day from night is called circle of illumination
the circle that divides the day from night is called circle of illumination
The line of latitude located about 66.5 degrees north of the equator is the Arctic Circle. This imaginary line marks the northernmost point where the sun can remain continuously above or below the horizon for 24 hours during the summer and winter solstices, respectively.
The imaginary line located at 66.5 degrees south latitude is called the Antarctic Circle. This is the southernmost latitude at which the sun can remain continuously above or below the horizon for 24 hours during the summer and winter solstices, respectively. It marks the boundary of the Antarctic region.
The important line of latitude that passes through Alaska at approximately 65 degrees North is the Arctic Circle. This line marks the southernmost latitude at which the sun can remain continuously above or below the horizon for 24 hours, occurring during the summer and winter solstices, respectively. The Arctic Circle is significant for its impact on climate, daylight, and wildlife in the region.
The north and south polar regions are the same size. They are defined by the Arctic and Antarctic Circles respectively. The Antarctic Circle is at 66 degrees 32 minutes S latitude. The Arctic Circle is at 66 degrees 32 minutes N latitude. The Antarctic and Arctic Circles are the points at sea level at which the sun does not appear over the horizon at the respective Winter Solstices.
The north and south polar regions are the same size. They are defined by the Arctic and Antarctic Circles respectively. The Antarctic Circle is at 66 degrees 32 minutes S latitude. The Arctic Circle is at 66 degrees 32 minutes N latitude. The Antarctic and Arctic Circles are the points at sea level at which the sun does not appear over the horizon at the respective Winter Solstices.
That's close to an approximate latitude for the Antarctic Circle.
The Arctic Circle is a line of latitude. As of 2012, it is approximately 66° 33' 44" N latitude.
The parallel that runs through Alaska is the Arctic Circle, which is located at approximately 66.5 degrees North latitude. This circle marks the southernmost latitude at which the sun can remain continuously above or below the horizon for 24 hours, especially during the summer and winter solstices. Parts of northern Alaska, including areas like Barrow (Utqiaġvik), experience polar day and polar night due to their location relative to the Arctic Circle.