Here is 24 hours day, this is the reason
Between June 20 and 22, every year, the North Pole of the Earth is most prone to sun. Because of this, the period of the day increases in the northern hemisphere. This situation is called Summer Solstice. Russia's city of Murmansk and Finland's Rovaniemi are areas of the world where there is a 24 hour day. There is no night during Summer Solstice.
