Polar nights particularly occur in the polar region durin.
America carpet solitice polar night.
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Midnight sun and polar night around the december solstice the antarctic circle experiences a never setting sun for over 24 hours and this is known as midnight sun or polar day.
Likewise the opposite of polar night is the midnight sun or also called a polar day.
Located over 200 miles north of the arctic circle tromsø norway is home to extreme light variation between seasons.
There are several reasons why the polar night region does not quite extend to the polar circle.
When is the polar night in norway.
The summer solstice lasts until the autumnal equinox which occurs on september 22nd or 23rd in the northern hemisphere.
The phenomenon happens within the polar circles only.
That is the midnight sun or midsummer night sun or polar day.
For example in gällivare sweden there is never a 24 hour night even though the city is about 60 miles 100 km north of the arctic circle.
Polar nights occur between the autumnal and spring equinoxes inside the arctic circle.
In locations just inside the arctic circle there may be no polar night around the december solstice.
These events are known as polar night.
The word twilight is also used to denote the periods of time when this illumination occurs.
In fact the arctic circle marks the northernmost point at which the centre of the noon sun is just visible on the december solstice and the southernmost point at which the centre of the midnight sun is just visible on the june solstice.
Twilight on earth is the illumination of the lower atmosphere when the sun is not directly visible because it is below the horizon twilight is produced by sunlight scattering in the upper atmosphere illuminating the lower atmosphere so that earth s surface is neither completely lit nor completely dark.
Other facts about the summer solstice.
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Also during the northern solstice places situated at latitude 66 56 degrees north known as the arctic circle will see the sun just on the horizon during midnight and all places north of it will see the sun above horizon for 24 hours.
Polar night is the opposite of midnight sun when the sun s disc is not visible above the horizon.
