[Aliska]

To my knowledge, it is not a topic of the slightest dispute. It's well-known among scholars/students of the era that that's when "peri'ah" (radical circumcision) was instituted by the Jews.

OK, if you say so. If it had been a matter of greater concern, I would have dug that out myself over the years.

[AntiGuv]

So far as concern and priorities, the only thing that matters is that it be of enough concern to you that you're here discussing the topic. And since it is of at least that much concern to you, now you know.