Changes

* 3761 BC<ref>In the 2nd and 3rd centuries AD, the Jewish calendar was reformed. F. Rühl has shown that the adoption of this era must have taken place between the year 222, when Julius Africanus reports that the Jews still retained the eight-year lunar cycle (which is referred to in the pseudepigraphal ''[[Book of Enoch]]'' (74:13-16); see [[w:Enoch calendar|Enoch Calendar]]), and 276, when Anatolius makes use of the nineteen year [[w:Metonic cycle|Metonic cycle]] to determine Easter after the manner of the Jews. It may be further conjectured that it was introduced about the year 240-241, the first year of the fifth thousand, according to this calculation, and that the tradition which associated its determination with [[w:Samuel of Nehardea|Mar Samuel]] (d. about 250) is justified. (F. Rühl. ''Der Ursprung der Jüdischen Weltära, in Deutsche Zeitschrift für Geschichtswissenschaft''. 1898. pp. 185,202.)</ref><ref>According to the main tradition, the epoch that Hebrew calendar currently uses, the '''Hillel World Era''', beginning October 7, 3761 BC, is traditionally regarded as having been calculated by [[w:Hillel II|Hillel II]] in the 4th century AD (ca. 358 AD), but did not become universal practice until the end of the Middle Ages. Scholars of this subject however believe that in practice, the evolution of the Hebrew calendar into its present form was actually a gradual process spanning several centuries from the first to about the eighth or ninth century AD.</ref> - [[w:Hebrew calendar|Hebrew Calendar]] (Judaism) - [ca.222-276 AD]; or, [ca.358 AD - ''Hillel World Era''].