Julian Year (astronomy)

Julian Year (astronomy)

In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86,400 SI seconds each. The Julian year is the average length of the year in the Julian calendar used in Western societies in previous centuries, and for which the unit is named. Nevertheless, because an astronomical Julian year measures duration rather than designating a date, this Julian year does not correspond to years in the Julian calendar or any other calendar. Nor does it correspond to the many other ways of defining a year.

Read more about Julian Year (astronomy):  Usage, Epochs, Julian Calendar Distinguished, Julian Day Distinguished

Other articles related to "julian, astronomy, year":

Julian Year (astronomy) - Julian Day Distinguished
... A Julianyear should not be confused with the Julianday (also Julianday number or JDN), which is also used in astronomy ... The Julianday uniquely specifies a date without reference to its day, month, or yearin any particular calendar ...

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