In his 20 year anniversary post, Terence Eden explains how he uses the "On This Day" feature of his blog every morning to look back on what he was writing on this day in previous years.

Finding this very inspiring, I decided to add a similar feature to my blog.
As my blog is built with Jekyll as static pages, some plain old JavaScript was needed to surface the posts of this day without having to rebuild the page daily.

And here we have now the On this day page :-)