Body: People who study "Medieval and modern chronology" investigate historical records to establish the dates of past events.
Some motivations are describe events and using historical records to improve modern society or technology.
RD Ware, E Breisach, S Dreibrodt, C Lubos, B Terhors are some authorities of "Medieval and modern chronology".
data collection, sorting are a few themes of "Medieval and modern chronology".