Lifespan 1000 years to 80?

[KevinM1]

Here's one apologist site that claims a biblical year is 360 days long: https://churchages.net/en/study/the-biblical-year/ I make no claim regarding its accuracy, or for really caring all that much.

Regardless, since just about all ancient peoples used a combination of the movement of celestial bodies in conjunction with the cyclical nature of seasons, there's no reason to believe the people who wrote the bible would shorten the length of a year so severely. They likely gave such unrealistic lifespans to these characters in order to reinforce their importance an power.