Ok, I added a quick shortcut. You can now go to a specific date by just going to that page, for example, the page for exactly a month ago is https://hackerdaily.io/2020-11-29. My database goes back to roughly the start of October, so that's the furthest you can go back for now.

I haven't add anything to the UI for now. Do you have an idea how to add this nicely to the existing UI?