The following was posted as a comment to:
The Younger Dryas 10,900 BC to 9,700 BC (nominally) preceded the improving climate that would have made agriculture sustainable. While a bit of progress might have been made on that front prior to 10,900 BC, the Younger Dryas would have been punishing to those efforts.
Genesis 8:22 English Standard Version (ESV)
22 While the earth remains, seedtime and harvest, cold and heat, summer and winter, day and night, shall not cease.”
Genesis 8:22 promises the needed climactic stability for sustainable agriculture. Noah lived for 500 years after the Flood, so sometime during his post-flood life, he received this promise.
I would nominally date the Flood to around 9700 BC, a time of rapid warming, rising sea levels, and rising ocean temperatures that might trigger super storms.
The Younger Dryas itself may have been precipitated by an exploding comet 1200 years prior.
Jude 14-15 “It was also about these that Enoch, the seventh from Adam, prophesied, saying, “Behold, the Lord comes with ten thousands of his holy ones, 15 to execute judgment on all and to convict all the ungodly of all their deeds of ungodliness that they have committed in such an ungodly way, and of all the harsh things that ungodly sinners have spoken against him.”
Judgement by 10,000s holy angels may correspond to the punishment of the blazing shards of an exploding comet, possibly witnessed by Enoch.
That would put Enoch at about 10,900 BC.