It used to be rare. Then it was occasional. Now it is routine.
When and why did having the Giants and Jets both play games that start at 1 p.m. become common? The when is that it has evolved over this decade, to the point that it hardly raises an eyebrow anymore.
It has happened four times already in 2018 and will happen again in Weeks 16 and 17.
That is a lot, when you consider that it never happened between 1985 and 2008. It happened twice in 2009 and that was only because of two special circumstances.