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The Gregorian year, which is in use in most of the world, begins on January 1 and ends on December 31. It has a length of 365 days in an ordinary year, with 8760 hours, 525,600 minutes, or 31,536,000 seconds; but 366 days in a leap year, with 8784 hours, 527,040 minutes, or 31,622,400 seconds.
- Year - Wikipedia
A calendar year is an approximation of the number of days of...
- Calendar - Wikipedia
A calendar is a system of organizing days. This is done by...
- Year - Wikipedia
In most calendar systems, the date consists of three parts: the (numbered) day of the month, the month, and the (numbered) year. There may also be additional parts, such as the day of the week. Years are usually counted from a particular starting point, usually called the epoch, with era referring to the span of time since that epoch.
List of calendars. In the list below, specific calendars are given, listed by calendar type ( solar, lunisolar or lunar ), time of introduction (if known), and the context of use and cultural or historical grouping (if applicable).
NameTypeGroupIntroductionlunisolarCanaan/MesopotamianCirca 3761 BCfixed (365 days)EgyptianBronze AgelunisolarMesopotamiansolarMesopotamianBronze AgeReferences. External links. History of calendars. The history of calendars covers practices with ancient roots as people created and used various methods to keep track of days and larger divisions of time. Calendars commonly serve both cultural and practical purposes and are often connected to astronomy and agriculture .
Calendário. Nota: Para outros significados, veja Calendário (desambiguação). Representação pictórica do Calendário asteca. Calendário é um sistema para contagem e agrupamento de dias que visa a atender principalmente às necessidades civis e religiosas de uma cultura.
