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.
Refer to figure 2-6 and calculate the noon Sun angle on June 21 and December 21. at 50 degrees north latitude, 0 degees latitude (equator) and 20 degrees south. latitude.efer to figure 2-6 and calculate the noon Sun angle on June 21 and December 21. at 50 degrees north latitude, 0 degees latitude (equator) and 20 degrees south. latitude.