The article discusses research about the chronology of the Noah's flood in the book of Genesis. Topics mentioned include a description of a different calendar in the Septuagint Flood chronology, the differences between the Septuagint and the Masoretic and Samaritan texts, the plurality of textual witnesses to biblical texts in the Dead Sea Scrolls, and the reasons why the 27-day month is partly schematically astronomical, mathematical and textual.