structural:summarization
Dates and length of reign

Thutmose III reigned from 1479 BC to 1425 BC according to the Low Chronology of Ancient Egypt. This has been the conventional Egyptian chronology in academic circles since the 1960s, though in some circles the older dates 1504 BC to 1450 BC are preferred from the High Chronology of Egypt. These dates, just as all the dates of the Eighteenth Dynasty, are open to dispute because of uncertainty about the circumstances surrounding the recording of a Heliacal Rise of Sothis in the reign of Amenhotep I. A papyrus from Amenhotep I's reign records this astronomical observation which theoretically could be used to perfectly correlate the Egyptian chronology with the modern calendar; however, to do this the latitude where the observation was taken must also be known. This document has no note of the place of observation, but it can safely be assumed that it was taken in either a Delta city, such as Memphis or Heliopolis, or in Thebes. These two latitudes give dates 20 years apart, the High and Low chronologies, respectively.