A simplistic clock-calendar combo inspired by ToshimonsterRealm, based on Matt Juggins' clock-calendar combo over at codepen.io/mattjuggins/pen/WGRRYx.
I just made the full port to WE, added a couple of customisation presets and a customisable background. Go to your steam directory/steamapps/workshop/431960/956565408 to find the full instructions in the README file.
As of version 2.1, Circular Calendar now supports a variety of background formats, namely PNG, GIF & JPG (including .jpg & .jpeg). I also ship it with a smaller background now, which is a wikimedia image of the moon scaled to 16:9, but should also support other aspect ratios.