When was the start of the Egyptian period during which the reign of Tantamani took place?
Tantamani: Tantamani (Assyrian "UR-daname"), Tanutamun or Tanwetamani (Egyptian) or "Tementhes" (Greek) (d. 653 BC) was a Pharaoh of Egypt and the Kingdom of Kush located in Northern Sudan and a member of the Nubian or Twenty-fifth dynasty of Egypt. History of ancient Egypt:  The Pharaonic Period is dated from the 32nd century BC, when Upper and Lower Egypt were unified, until the country fell under Macedonian rule, in 332 BC.
the 32nd century BC