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Julian Date (JD) and Modified Julian Date (MJD)

Julian Day Number is a count of
days elapsed since Greenwich mean
noon on 1 January 4713 B.C.  The
Julian Date is the Julian day number
followed by the fraction of the day
elapsed since the preceding noon.
  Modified Julian Date (MJD) is
defined as:

MJD=JD-2400000.5


Press below to see
the MJD today:



 

Last revision date: <20 Dec 2012>