Egyptian chronology
The Conventional Egyptian chronology reflects the broad scholarly consensus about the outline and many details of the chronology of Ancient Egypt. It places the beginning of the Old Kingdom in the 27th century BC, the beginning of the Middle Kingdom in the 21st century BC and the beginning of the New Kingdom in the mid-16th century BC.
Disagreements remain within this consensus, and various chronologies diverge by about 300 years for the Early Dynastic Period, up to 30 years in the New Kingdom, and a few years in the Late Period.
In addition, there are a number of "alternative chronologies" outside scholarly consensus, such as the "New Chronology" proposed in the 1990s, which lowers New Kingdom dates by as much as 350 years, or the "Glasgow Chronology" (proposed 1978–1982), which lowers New Kingdom dates by as much as 500 years.