I added a hidden feature to the Post Kinds plugin for use on my site. I haven’t figure out the best way to link to it, but if you add /onthisday/12/13, the first number being the month the second the year, it will return all posts made on that day in history.

I previously added /kind/photo/2018/12 – Date(year, month, and day) archives for my post kinds. As well as the ability to pull a tag archive of some, such as..  /kind/photo/parkeologychallenge .

Available on all Post Kinds enabled sites right now.