Djer was a First Dynasty pharaoh who reigned for about 40 years. He lived around the mid-thirty-first century BCE and reigned for c. 40 years. A mummified forearm of Djer or his wife has been discovered. While the Egyptian priest Manetho, writing in the third century BCE, stated that Djer ruled for 57 years, modern research by Toby Wilkinson in Royal Annals of Ancient Egypt stresses that the near-contemporary and therefore, more accurate Palermo Stone ascribes Djer a reign of "41 complete and partial years."

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