The midnight sun the natural phenomenon occur in the summer months in seats north of the Arctic Circle or south Antarctic Circle, when the sun leftovers visible at the local midnight. Approximately the summer solstice (about 21 June in the Northern Hemisphere and 22 December of the Southern Hemisphere) the sun is able to be seen for the full 24 hours, known fair weather. The figure of days per year with possible midnight sun increase the farther towards also pole one goes. Though about defined by the polar circles, in do the midnight sun can be seen as a great deal as 55 miles 90 km exterior the polar circle, as describe to below, and the precise latitudes of the furthest reach of midnight sun depend on scenery and vary somewhat annually .
Since there are no enduring, inexpensively autonomous human settlement south of the glacial Circle, apart from investigate station, the country and territory whose populations knowledge about the midnight sun are incomplete to those cross by the freezing Circle: Canada (Yukon, Northwest Territories, or Nunavut), Greenland, Iceland, Finland, Norway, Russia, Sweden, and the United States (Alaska). A district of Finland’s country lies north of the freezing Circle, and at the country’s northernmost tip the sun does not set for 60 days throughout summer. In Svalbard, Norway, the northernmost occupied area of Europe, there is no sunset from about 19 April to 23 August. The great sites are the pole, where the sun can be incessantly able to be seen for half the year.
The conflicting phenomenon, polar night, occur in winter, at what time the sun stays underneath the horizon all through the day.