The Latin term was adopted in Old French as calendier and from there in Middle English as calender by the 13th century (the spelling calendar is early modern).įurther information: Week, Calendar epoch, Month, Lunisolar calendar, and Computus Equinox seen from the astronomic calendar of Pizzo Vento at Fondachelli Fantina, Sicily Latin calendarium meant 'account book, register' (as accounts were settled and debts were collected on the calends of each month). The term calendar is taken from kalendae, the term for the first day of the month in the Roman calendar, related to the verb calare 'to call out', referring to the 'calling' of the new moon when it was first seen. The most common type of pre-modern calendar was the lunisolar calendar, a lunar calendar that occasionally adds one intercalary month to remain synchronized with the solar year over the long term. Periods in a calendar (such as years and months) are usually, though not necessarily, synchronized with the cycle of the sun or the moon. A 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. A calendar is also a physical record (often paper) of such a system. A date is the designation of a single and specific day within such a system.

This is done by giving names to periods of time, typically days, weeks, months and years. Modern day Indonesian Gregorian calendar for a Catholic church British calendar, 1851, gilt bronze and malachite, height: 20.3 cm, Metropolitan Museum of Art (New York City)Ī calendar is a system of organizing days. ( September 2022) ( Learn how and when to remove this template message) You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. The examples and perspective in this article deal primarily with Eurasia and the Near East and do not represent a worldwide view of the subject.

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