Mesopotamia copper age (23h 9min, jul 9, 5600 y BC – 23h 9min, jul 9, 3200 y BC)
Description:
 from stone tools and weapons to ones made of copper. This era includes the so-called Ubaid Period (c. 5000-4100 BCE, named for Tell al-`Ubaid, the location in Iraq where the greatest number of artifacts were found) during which the first temples in Mesopotamia were built and unwalled villages developed. 
Added to timeline:
Date:
23h 9min, jul 9, 5600 y BC
23h 9min, jul 9, 3200 y BC
 ~ 2401 years