Looks like I misunderstood your question. Good question, I don't know why the Rabbis who understand Hebrew wouldn't interpret a sixth day creation with Adam created on the eighth day. Maybe for the same reason most American preachers don't, because they don't look hard enough. Since we outnumber them exponentially, maybe the odds are that someone here would figure it out first. After all, there is very few Christians that look into it closely. Most still believe the apple story.