Only a few astrophysical points and synchronisms listed in texts provide anchor points for the absolute chronology of Ancient Egypt. At first we will show how we can re-calculate some of these anchor points by using Sothic dating based on the arcus visionis method, and modelling lunar dates using a Bayesian approach. Then, we will discuss two radiocarbon studies carried out on short-lived Egyptian materials held at the Louvre Museum that could be attributed to particular reigns or other precise periods. Using a Bayesian approach, these dates were combined with the known order of succession and the lengths of reigns. Sothic and lunar dates were integrated as priors in the model. This approach has led to a new proposal for the absolute chronology of Egypt's 18th Dynasty. ► Termini post and ante quos for Egypt's 18th Dynasty were deduced using Sothic dating. ► Bayesian calculations for Thutmoses III's lunar dates were incorporated in the model. ► 14C dates were performed on objects archaeologically attributed to the 18th Dynasty. ► A Bayesian model incorporating Sothic, Lunar and Radiocarbon dates was developed. ► A temporal density for the accession date of the 18th Dynasty's kings was simulated.