Calendar

A calendar is a system of organizing days. A date is the designation of a single, specific day within such a system. A calendar is also a physical record of such a system. Calendar can also mean a list of planned events, such as a court calendar or a partly or fully chronological list of documents, such as a calendar of wills Periods in a calendar such as years and months are usually, though not necessarily, synchronized with the cycle of the sun or the moon.