The 13-Moon Calendar has 13 months of 28 days each and a single day outside the month and week cycle. It is unique in that it starts around Gregorian 26 July, synchronized to the position of the star Sirius. Image:Cheese1.png This article is a stub. You can help Calendar Wiki by expanding it. * “Harmonic Standard 13 Moon Calendar Year” * “Calendar Reform and the Future of Civilization”