Anaptár is a unique, informative poster calendar. It is much more than a traditional one. It provides lots of information beside enumerating days: visualizing data on the Sun and the Moon in a new way the calendar shows the movement of these planets in the sky, and because of the radial arrangement this huge amount of data is incorporated in a spectacular, complex and yet easily comprehensible system. There have been other calendars with circular designs, but this data visualizing method is unexampled. It literally makes astronomic correlations visible.