The German Egyptologist Jürgen von Beckerath also accepts that Seti I's reign lasted only 11 Years. Seti's highest known date is Year 11, IV Shemu day 12 or 13 on a sandstone stela from Gebel Barkal but he would have briefly survived for 2 to 3 days into his Year 12 before dying based on the date of Ramesses II's rise to power. Seti I's accession date has been determined by Wolfgang Helck to be III Shemu day 24, which is very close to Ramesses II's known accession date of III Shemu day 27.