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21st parallel north : ウィキペディア英語版 | 21st parallel north
The 21st parallel north is a circle of latitude that is 21 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Indian Ocean, the Pacific Ocean, North America, the Caribbean and the Atlantic Ocean. At this latitude the sun is visible for 13 hours, 25 minutes during the summer solstice and 10 hours, 51 minutes during the winter solstice.〔http://aa.usno.navy.mil/data/docs/Dur_OneYear.php〕 ==Around the world== Starting at the Prime Meridian and heading eastwards, the parallel 21° 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)』 ■ウィキペディアで「21st parallel north」の詳細全文を読む
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