JD2T:

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   Converts Julian days to centuries from J2000.0
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   Form:
   T = JD2T( jd )
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   ------
   Inputs
   ------
   jd           Julian date (days)

   -------
   Outputs
   -------
   T            Julian centuries of 86400s dynamical time from j2000.0

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Children:

Common: Time/Date2JD