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.
This year, it falls on June 21. But that's not always true. The summer solstice happens between June 20 and June 21 every year and formally occurs when the sun reaches its highest point in the sky. This year, the actual time the summer solstice begins is 12:38 p.m., Mental Floss reported. The sun will be over the Tropic of Cancer -- 23 degrees, 27 minutes north latitude. It will be in the sky from 5:25 a.m. to 8:31 p.m. EDT.