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Julian date

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Julian date

In astronomy, measure of time used in which days are numbered consecutively from noon GMT on 1 January 4713 BC. It is useful where astronomers wish to compare observations made over long time intervals. The Julian date (JD) at noon on 1 January 2000 was 2451545.0. The modified Julian date (MJD), defined as MJD = JD −2400000.5, is more commonly used since the date starts at midnight GMT and the smaller numbers are more convenient.



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Improved support for date processing, most notably the ability to convert a Julian date to a printable Gregorian date.
 
 
 
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