And all the men would go on a hunting, fishing and camping trip when it did.
Among Plains and Rocky Mountain tribes, this was precisely what happened. If they were lucky, when they got back, the wives would merely have beaten up on each other and nobody was seriously injured or dead.
I can imagine. In the close confines of a nomad camp, women would “synchronize” pretty quickly. I bet the braves would have kept bug-out bags packed all the time...
If you read the Bible, Old Testement law had the Women’s tents where they went during that time.
My bride at first thought that was horrible, and then realized it would mean the husbands weren’t around to make them mad.