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- Midnight_sun abstract "The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight. Around the summer solstice (approximately June 21 in the north and December 22 in the south) the sun is visible for the full 24 hours, given fair weather. The number of days per year with potential midnight sun increases the farther towards either pole one goes. Although approximately defined by the polar circles, in practice the midnight sun can be seen as much as 90 km outside the polar circle, as described below, and the exact latitudes of the farthest reaches of midnight sun depend on topography and vary slightly year-to-year.There are no permanent human settlements south of the Antarctic Circle, so the countries and territories whose populations experience it are limited to those crossed by the Arctic Circle, i.e. Canada (Yukon, Northwest Territories, and Nunavut), Greenland, Iceland, Finland, Norway, Russia, Sweden, and the United States (Alaska). A quarter of Finland's territory lies north of the Arctic Circle and at the country's northernmost point the sun does not set at all for 60 days during summer. In Svalbard, Norway, the northernmost inhabited region of Europe, there is no sunset from approximately 19 April to 23 August. The extreme sites are the poles where the sun can be continuously visible for a half year.The opposite phenomenon, polar night, occurs in winter when the sun stays below the horizon throughout the day.Since the axial tilt of the Earth is considerable (approximately 23 degrees 27 minutes) the sun does not set at high latitudes in (local) summer. The duration of sunlight increases from one day during the summer solstice at the polar circle to several weeks only 100 km closer to the pole, to six months at the poles. At extreme latitudes, it is usually referred to as polar day. 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 it spends the days continuously moving in circles around the observer, gradually spiralling higher and reaching its highest circuit of the sky at the summer solstice.Due to atmospheric refraction and also because the sun is a disk rather than a point, the midnight sun may be experienced at latitudes slightly below the polar circle, though not exceeding one degree (depending on local conditions). For example, Iceland is known for its midnight sun, even though most of it (Grímsey is the exception) is slightly south of the Arctic Circle. For the same reasons, the period of sunlight at the poles is slightly more than six months. Even the northern extremities of Scotland (and those places on similar latitudes such as St. Petersburg) experience twilight in the northern sky at around the summer solstice.Observers at heights appreciably above sea level can experience extended periods of midnight sun as a result of the 'dip' of the horizon viewed from altitude.".
- Midnight_sun thumbnail Midnight_sun.jpg?width=300.
- Midnight_sun wikiPageExternalLink www.nyksundgjestehus.no.
- Midnight_sun wikiPageExternalLink www.uwmidsun.com.
- Midnight_sun wikiPageExternalLink 56-midnight-sun-seen-from-fjellheisen-cable-car.html.
- Midnight_sun wikiPageID "300659".
- Midnight_sun wikiPageRevisionID "603145748".
- Midnight_sun hasPhotoCollection Midnight_sun.
- Midnight_sun subject Category:Arctic_geography_terminology.
- Midnight_sun subject Category:Earth_phenomena.
- Midnight_sun type Album.
- Midnight_sun type MusicalWork.
- Midnight_sun type Work.
- Midnight_sun type CreativeWork.
- Midnight_sun type MusicAlbum.
- Midnight_sun type Q482994.
- Midnight_sun type InformationEntity.
- Midnight_sun comment "The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight. Around the summer solstice (approximately June 21 in the north and December 22 in the south) the sun is visible for the full 24 hours, given fair weather. The number of days per year with potential midnight sun increases the farther towards either pole one goes.".
- Midnight_sun label "Jour polaire".
- Midnight_sun label "Middernachtzon".
- Midnight_sun label "Midnight sun".
- Midnight_sun label "Mitternachtssonne".
- Midnight_sun label "Sol da meia-noite".
- Midnight_sun label "Sol de medianoche".
- Midnight_sun label "Sole di mezzanotte".
- Midnight_sun label "Полярный день".
- Midnight_sun label "شمس منتصف الليل".
- Midnight_sun label "极昼".
- Midnight_sun label "白夜".
- Midnight_sun sameAs Půlnoční_Slunce.
- Midnight_sun sameAs Mitternachtssonne.
- Midnight_sun sameAs Ήλιος_του_μεσονυχτίου.
- Midnight_sun sameAs Sol_de_medianoche.
- Midnight_sun sameAs Gauerdiko_eguzki.
- Midnight_sun sameAs Jour_polaire.
- Midnight_sun sameAs Matahari_tengah_malam.
- Midnight_sun sameAs Sole_di_mezzanotte.
- Midnight_sun sameAs 白夜.
- Midnight_sun sameAs 백야.
- Midnight_sun sameAs Middernachtzon.
- Midnight_sun sameAs Sol_da_meia-noite.
- Midnight_sun sameAs m.01rvmx.
- Midnight_sun sameAs Q774621.
- Midnight_sun sameAs Q774621.
- Midnight_sun wasDerivedFrom Midnight_sun?oldid=603145748.
- Midnight_sun depiction Midnight_sun.jpg.
- Midnight_sun isPrimaryTopicOf Midnight_sun.