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49th parallel north
The 49th parallel north is a circle of latitude that is 49 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.
The city of Paris is about south of the 49th parallel and is the largest city between the 48th and 49th parallels. Its main airport, Charles de Gaulle Airport, lies on the parallel.
Roughly of the Canada–United States border was designated to follow the 49th parallel from British Columbia to Manitoba on the Canadian side, and from Washington to Minnesota on the U.S. side, more specifically from the Strait of Georgia to the Lake of the Woods. This international border was specified in the Anglo-American Convention of 1818 and the Oregon Treaty of 1846, however the border as indicated by survey markers placed in the 19th century deviates from the 49th parallel by tens of meters.
From a point on the ground at this latitude, the sun is above the horizon for 16 hours, 12 minutes during the summer solstice and 8 hours, 14 minutes during the winter solstice.〔http://aa.usno.navy.mil/data/docs/Dur_OneYear.php〕 Slightly less than 1/8 of the Earth's surface is north of the 49th parallel.
== Around the world ==
Starting at the Prime Meridian and heading eastwards, the parallel 49° north passes through:
:
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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