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El calendario juliano tiene un año regular de 365 días divididos en 12 meses. Se agrega un día bisiesto a febrero cada cuatro años. El año juliano tiene por lo tanto un promedio de 365,25 días, ajustando aproximadamente con este día adicional la duración del año trópico.
The Julian calendar is a solar calendar of 365 days in every year with an additional leap day every fourth year (without exception). The Julian calendar is still used as a religious calendar in parts of the Eastern Orthodox Church and in parts of Oriental Orthodoxy as well as by the Amazigh people (also known as the Berbers).
Conversion between Julian and Gregorian calendars. The tables below list equivalent dates in the Julian and Gregorian calendars. Years are given in astronomical year numbering . This is a visual example of the official date change from the Julian calendar to the Gregorian.
Julian calendar, dating system established by Julius Caesar as a reform of the Roman republican calendar. By the 40s bce the Roman civic calendar was three months ahead of the solar calendar. Caesar, advised by the Alexandrian astronomer Sosigenes, introduced the Egyptian solar calendar, taking the length of the solar year as 365 1/4 days.
- The Editors of Encyclopaedia Britannica
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). Where appropriate, the regional or historical group ( Jewish calendar, Hijri calendar, Sikh, Mayan ...
NameTypeGroupIntroductionlunisolarCanaan/MesopotamianCirca 3761 BCfixed (365 days)EgyptianBronze AgelunisolarMesopotamiansolarMesopotamianBronze AgeThe Julian calendar, proposed by Julius Caesar in 46 BCE (708 AUC), was a reform of the Roman calendar. It was first used in 1 January 45 BCE. It was the main calendar in most of the world, until Pope Gregory XIII replaced that with the Gregorian calendar in 4 October 1582.
The Julian calendar reformed the ancient Roman calendar and consists of three cycles of 365-day years followed by a 366-day leap year. Introduced by and named after Julius Caesar in 45 BCE.
