yes, the first one I made of the "calendar on c64" series was about that topic (you can find it on my itchio homepage looking for "customizable calendar" or similar), but since the bottom has to be occupied by the days of the year, the 2/3 on the upper side are often not enough for a good screenshot, depending on the game.
Anyway, I made it at that time, then I turned to something simpler to adapt