Southern Hemisphere "Periplus of the Erythraean Sea", mentioned the island of "Menuthias" (Ancient Greek: Μενουθιάς) as a trading port on the east African coast, which is probably the small island of Unguja on which Zanzibar is located. The oldest proven archaeological site in the Southern Hemisphere is Sechin Bajo, located on the coast of northern Peru, and dates back to 3600 BCE. Sechin Bajo may also be the oldest site for monumental architecture in the Americas. Southern Hemisphere The Southern Hemisphere is the half of Earth that is south of the Equator. It contains all or parts of five continents (Antarctica, Australia,
Southern Hemisphere 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. The South Pole is in the center of the southern hemispherical region. Southern Hemisphere climates tend to be slightly milder than those at similar latitudes in the Northern Hemisphere, except in the Antarctic which is colder than the Arctic. This is because the Southern Hemisphere has significantly more ocean and much less land; water heats up and cools down more slowly than land. The differences are also attributed to