[Mr. Douglas]

Any date which goes more than about 4004 BC would serve to invalidate a literal reading of the Genesis timeline.

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At least regarding the definition of a “day” regarding the first six “days”. Yes.

[PapaBear3625]

There's also the issue of Noah's Flood, around 2348 BC, which (in theory) wiped out all mankind except for Noah's family.

The existence of civilizations whose records go back that far (like China) and which do not mention any total destruction of the populace and replacement by the descendants of Noah, would also tend to invalidate literal Genesis.