The Sumerians are thought to have formed the first human civilization in world history. They lived in southern Mesopotamia, between the Tigris and Euphrates Rivers in the Middle East. Cradle of Civilization. Many historians think that cities and towns were first formed in Sumer around 5000 BC.
At noon, on March 21 and September 23rd are the vernal and autumnal equinoxes. The sun is directly overhead at the equator at these times. On June 22nd is the summer solstice, in the Northern Hemisphere. The sun is at the 23.5 degrees Northern latitude.
The Earth is farthest from the Sun on its orbit when it is summer in the Northern Hemisphere. This is almost two weeks after the 2015 December Solstice. The Earth will reach its Aphelion at 4:25 PM on July 4, 2016.This is just over two weeks after the June Solstice.erihelion, Aphelion and the Solstices. The Earth is closest to the Sun or at its Perihelion two weeks after the December solstice and farthest from the Sun or Aphelion, two weeks after the June Solstice. In 2015, the Earth will reach its Perihelion at 22:49 UTC on January 2, 2016.