The 51st parallel north is a circle of latitude that is 51 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.
At this latitude the sun is visible for 16 hours, 33 minutes during the summer solstice and 7 hours, 55 minutes during the winter solstice.
The catchment area of London can be broadly defined by the 51st and 52nd parallels.
Read more about 51st Parallel North: Around The World, Russian America 1799–1824/25, See Also
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