To provide a rotary schedule calendar by which arbitrary months can be easily shown, judgement and management of schedule are properly done in time series, a calendar and the schedule are easily stored without being scattered, and which becomes valuable data as a diary like schedule calendar after use.

In the rotary schedule calendar, required months (usually one year) are connected in series in a ring shape at last and shown by folding in arbitrary period. The arbitrary months (usually from one month to six months) can be easily shown by changing folding manner. One or more securing holes are arranged in the upper and lower same positions of each month calendar thereby the calendar can be easily secured to wall faces or others because the holes are continuous regardless of folding positions and folding number of times.