The 2013 Astrotheology Calendar serves as a basic introduction into the world of astrotheology and solar mythology. In addition to showing lunar phases, this calendar highlights the solstices, equinoxes and fire festivals with a different color for each of the eight relevant days. In our quest to inspire an interest in astrotheology, mythology and archaeoastronomy, we have also provided fascinating information about the astronomical alignments and astrotheological meanings of various archaeological sites and ancient artifacts from around the world. The calendar further explores the mythology surrounding the sun, moon and other celestial features, especially the Milky Way, exemplified on the cover as the Egyptian goddess Nut.