
The
midnight sun is a phenomenon occurring in latitudes north of the Arctic
Circle and south of the Antarctic Circle where the sun is visible at
the local midnight. Given fair weather conditions, the sun is visible
for a continuous 24 hours. Since there are no permanent human
settlements south of the Antarctic Circle, the countries and
territories whose population experiences it are limited to the ones
crossed by the Arctic Circle, i.e.
The sky must be clear and
there must be unobstructed visibility northwards in order to see the
Midnight Sun. A summer night on the fjord or in the mountains is an
experience not to be missed, you can go fishing in the fjord, which
contains splendid variation of fish, or you can take a walk in the
wilderness surrounding.
The opposite phenomenon, polar night, is
observed in winter when the sun is sufficiently below the horizon, so
that there is insufficient sunlight or no light at all. (A lingering
dusk may occur, if the sun is only 12 degrees or less below the
horizon.)
Since the Earth´s axis is tilted with respect to the
ecliptic by approximately 23 degrees 27 minutes (commonly rounded to 23
degrees and a half), the sun does not set at high latitudes in (local)
summer. The duration of the midnight sun increases from one day during
the summer solstice at the polar circle to approximately six months at
the poles. At extreme latitudes, it is usually referred to as polar
day. The length of the time when the sun is above the horizon varies
from 20 hours at the Arctic Circle and Antarctic Circle to 186 days at
the poles.
At the poles themselves, the sun only rises once and
sets once, each year. During the six months when the sun is above the
horizon at the poles, the sun spends the days constantly moving around
the horizon, reaching its highest circuit of the sky at the summer
solstice.
MIDNIGHT SUN EFFECT ON PEOPLE
Many find it difficult
to fall asleep during the night when the sun is shining. In general,
visitors and newcomers are most affected; they are easily spotted in
residential areas by the aluminum foil glued onto their bedroom windows
to obtain darkness inside. Some natives are also affected, but in
general to a lesser degree, and some say it´s therapy to the SOUL.
Summer Midnight at Latitude 60.4
Due
to refraction, the midnight sun may be experienced at latitudes
slightly below the polar circle, though not exceeding one degree
(depending on local conditions).
SEE VIDEOs of THE MIDNIGHT SUN.
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FINNMARK
North Cape is normally denoted as the northernmost point in
Europe, there are 76 days (from 14 May to 30 July) of proper
midnight sun and an additional few days with partial sun before and after.
SVALBARD
In Svalbard the northernmost inhabited region of Europe, there is
no sunset from approximately April 19th to August 23rd. The extreme
sites are the poles where the sun can be visible for a continuous half
year.
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