The History you really refer to is 6000 years of RECORDED history. That would be
6000 years after someone started recording events. That happened somewhere in the
late 4th millenium BCE, so it hasn't happened yet. Perhaps it started a bit sooner in
that 4th millenium BCE, in which case it would be sometime in the 2nd millenium C.E., so
it is soon.
What you are sort of asking is, "When were Adam and Eve created?"
They were created by some writer long after writing was being used. Perhaps they were
created by an author about 5000 years ago, maybe less. I do believe they were created
long before the Israelites were in Babylon.