Abstract: A three dimensional calendar display structure, generally resembling a ball, is formed and assembled from sheet stock. First and second regular hexagon facets provide stable bases at opposite ends of the structure, while first and second annular courses of isosceles pentagon facets, each lying along the perimeter of one of the hexagon facets, form an intermediate body of the display structure. The first and second courses are in opposed positions with the apex of each pentagon facet of one course in a position juxtaposed between apex edges of two different neighboring pentagon facets of the other course. Calendar indicia are displayed on the pentagon facets, enduring indicia are displayed on the hexagon facets, and portions of the figure 8 seam pattern and stitching of a baseball are displayed on selected facets such that the continuous figure 8 pattern is displayed on the assembled display structure.