The Book of Enoch has a prophetic foretold timeline based on records seen in heaven of the whole course of world history from beginning of mankind to the judging of mankind - a seven thousand year period. It splits this period into ten seven hundred year parts called ‘weeks’ (or sevens). The position of the Flood in this scheme is sometime in the second week - possibly putting it towards the end of that week but the language meaning is uncertain. This puts it between 3200 and 2500 BC, likely in the second half of that period so between 2900 and 2500 BC. The archaeology is well defined for the dating of the Flood because
1. The Sumerian King Lists clearly say the Flood ended the dynasty ruling the world whose last capital city was Shuruppak so at least Shuruppak itself was affected (destroyed) by it
2. Shuruppak is a well understood archaeological site called Tell Fara
3. Tell Fara shows a clear mud layer of flood deposits covering the Jemdat Nasr Period layer which has pottery linking it to the Jemdat Nasr Period
4. Radiocarbon dating has been applied to the pre-Flood layer of Tell Fara and the latest dating is 2900 BC
If the latest radiocarbon dates for the pre-Flood layer of Tell Fara coincides with the Flood it gives a radiocarbon date of the Flood of 2900 BC. It might be that limited artefacts for dating means that later objects from before the Flood have been missed so the Flood could be a little later. Yet this 2900 BC date does fit within the written time period of the Book of Enoch. It means the time from the Flood till the next major prophesied event after the Flood mentioned by Enoch, the establishmemt of Abraham to begin a righteous race (the ‘plant of righteousness’), this period, a kind of Dark Ages, was almost a thousand years long.
The credibility of the prophetic timeline in the Book of Enoch (found around chapter 93) by its good fit with archaeology puts credibility on the date it gives for the creation of Adam - the starting point of the ten weeks - as around 3900 BC. This in turn sheds light on the future end of the ten weeks as being around 3100 AD. So it has importance to how we view the future as well as how we view the past. It also helps in understanding our present time.
This also puts the ascension of Enoch into heaven at around 3000 BC since he writes that he was born in the first week which means his birth was around 3300 to 3400 BC. So much of the period of the Book of Enoch authoring is put between 3200 and 3000 BC. Noah added sections before the Flood so around 3000 BC.
