Conversion number between Hipparchic cycle and year (Julian) [a, y, or yr] is 303.99726214921. This means, that Hipparchic cycle is bigger unit than year (Julian).
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If conversion between Hipparchic cycle to second and second to year (Julian) is exactly definied, high precision conversion from Hipparchic cycle to year (Julian) is enabled.
Decimal places: (0-800)Hipparchic cycle
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Definition of Hipparchic cycle unit: ≡ 4 Callippic cycles - 1 d. A lunar cycle noticed by Hipparchus. Eric Weisstein's World of Biography It consists of four Callipic cycles less a day, in which (4 × 27759 - 1) days are very nearly 3760 months, ≡ 9.593424 Gs
Definition of year (Julian) unit: = 365.25 d average. The basic calendar year has 365 days, but in fact the Earth needs a little more time around the sun. The Julian calendar compensated this with leap year (every fourth year had 366 days). According to the formula, a Julian year has 365 + 1/4 = 365.25 days. But even with this compensation, the astronomical year slip 0.78 days every 100 years into real seasons. Therefore, most countries have moved to the Gregorian calendar introduced in 1582.
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