Keeping the above poster's questions in mind, it wouldn't be that hard I don't think to edit that cast table code of Quibbler's into the exact thing you're thinking of.
You'd basically change the area in the code that holds the icons into an area that puts the Calendar dates in, yeah?
But wastintime is right, if you're going a whole year in one post, you're likely to hit the post limit before you get the entire thing in. It really depends on how much info you're looking to display.