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southern hemisphere : ウィキペディア英語版 | southern hemisphere
The Southern Hemisphere is the half sphere of the Earth which is south of the equator. It contains all or parts of five continents〔(【引用サイトリンク】 title=Hemisphere Map )〕 (Antarctica, Australia, about 9/10 of South America, the southern third of Africa, and several southern islands off the continental mainland in Asia), four oceans (Indian, South Atlantic, Southern, and South Pacific) and most of Oceania. Due to the tilt of Earth's rotation relative to the Sun and the ecliptic plane, summer is from December to March and winter is from June to September. September 22 or 23 is the vernal equinox and March 20 or 21 is the autumnal equinox. == Geography ==
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「southern hemisphere」の詳細全文を読む
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