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 2016 solstice occurs at 6:34 p.m. Eastern Time on June 20, marking the first day of astronomical summer and the longest day of the year in Earthâs northern hemisphere. (NASA) Every year on the June solstice the sunâs direct rays reach their northernmost position on the Earth.