Calendar - Sources

A calendar is a system for naming periods of time, typically days. These names are known as calendar dates. The dates may be based on the perceived motion of astronomical objects. A calendar is also a physical device (often paper) that illustrates the system (for example, a desktop calendar) — this is the most common usage of the word. As a subset, 'calendar' is also used to denote a list of particular set of planned events (for example, court calendar). Calendar - Calendar systems. Including:

• Calendar - Calendar systems
• Calendar - Solar calendars
• Calendar - Lunar calendars
• Calendar - Fiscal calendars
• Calendar - Calendar subdivisions
• Calendar - Other calendar types
• Calendar - Complete and incomplete calendars
• Calendar - Pragmatic theoretical and mixed calendars
• Calendar - Uses
• Calendar - Currently used calendars
• Calendar - Sources

Read more here: » Calendar: Encyclopedia - Calendar

Calendars in use on Earth are lunar, solar, lunisolar or arbitrary. A lunar calendar is synchronized to the motion of the Moon (moon phases); an example is the Islamic calendar. A solar calendar is based on perceived seasonal changes synchronized to the apparent motion of the Sun; an example is the Persian calendar. A lunisolar calendar is synchronized both to the motion of the Moon and to the apparent motion of the Sun; an example is the Jewish calendar. An arbitrary calendar is not synchronized to either the Moon or the Sun; examples are the ...

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Calendar, Calendar - Calendar systems, Calendar - Solar calendars, Calendar - Lunar calendars, Calendar - Fiscal calendars, Calendar - Calendar subdivisions, Calendar - Other calendar types, Calendar - Complete and incomplete calendars, Calendar - Pragmatic theoretical and mixed calendars, Calendar - Uses, Calendar - Currently used calendars, Calendar - Sources

Read more here: » Calendar: Encyclopedia II - Calendar - Calendar systems

Calendars in widespread use today include the Gregorian calendar, which is the de facto international standard, and is used almost everywhere in the world for civil purposes, including in China and India (along with the Indian national calendar). The Hebrew calendar is the official calendar of Israel's government, but the Gregorian calendar is much more widely used in Israel's business and day-to-day affairs. The Persian calendar is used in Iran and Afghanistan. The Islamic calendar is used by Muslims the world over. The Chinese, Hebrew, Hindu, and Julian calendars ...

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Calendar, Calendar - Calendar systems, Calendar - Solar calendars, Calendar - Lunar calendars, Calendar - Fiscal calendars, Calendar - Calendar subdivisions, Calendar - Other calendar types, Calendar - Complete and incomplete calendars, Calendar - Pragmatic theoretical and mixed calendars, Calendar - Uses, Calendar - Currently used calendars, Calendar - Sources

Read more here: » Calendar: Encyclopedia II - Calendar - Currently used calendars

Calendar - Complete and incomplete calendars. Calendars may be either complete or incomplete. Complete calendars provide a way of naming each consecutive day, while incomplete calendars do not. The early Roman calendar, which had no way of designating the days of the winter months other than to lump them together as "winter", is an example of an incomplete calendar, while the Gregorian calendar is an example of a complete calendar. Calendar - Pragmatic theoretical and mixed calendars. C ...

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Calendar, Calendar - Calendar systems, Calendar - Solar calendars, Calendar - Lunar calendars, Calendar - Fiscal calendars, Calendar - Calendar subdivisions, Calendar - Other calendar types, Calendar - Complete and incomplete calendars, Calendar - Pragmatic theoretical and mixed calendars, Calendar - Uses, Calendar - Currently used calendars, Calendar - Sources

Read more here: » Calendar: Encyclopedia II - Calendar - Other calendar types

Nearly all calendar systems group consecutive days into "months" and also into "years". In a solar calendar a year approximates Earth's tropical year (that is, the time it takes for a complete cycle of seasons), traditionally used to facilitate the planning of agricultural activities. In a lunar calendar, the month approximates the cycle of the moon phase. Consecutive days m ...

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Calendar, Calendar - Calendar systems, Calendar - Solar calendars, Calendar - Lunar calendars, Calendar - Fiscal calendars, Calendar - Calendar subdivisions, Calendar - Other calendar types, Calendar - Complete and incomplete calendars, Calendar - Pragmatic theoretical and mixed calendars, Calendar - Uses, Calendar - Currently used calendars, Calendar - Sources

Read more here: » Calendar: Encyclopedia II - Calendar - Calendar subdivisions

The primary practical use of a calendar is to identify days: to be informed about and/or to agree on a future event and to record an event that has happened. Days may be significant for civil, religious or social reasons. For example, a calendar provides a way to determine which days are religious or civil holidays, which days mark the beginning and end of business accounting periods, and which days have legal significance, such as the day taxes are due or a contract expires. Also a calendar may, by identifying a day, provide other useful information ...

See also:

Calendar, Calendar - Calendar systems, Calendar - Solar calendars, Calendar - Lunar calendars, Calendar - Fiscal calendars, Calendar - Calendar subdivisions, Calendar - Other calendar types, Calendar - Complete and incomplete calendars, Calendar - Pragmatic theoretical and mixed calendars, Calendar - Uses, Calendar - Currently used calendars, Calendar - Sources

Read more here: » Calendar: Encyclopedia II - Calendar - Uses