DeltaT:

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   Computes the difference between UT1 and TT based on the Julian date.
   This model is based on observations up through 1993 and after that
   is a linear extrapolation. The equation is UT1 = TT - DT.

   If you type DeltaT it will compute dt for the current date and time.

   Since version 1.
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   Form:
   dt = DeltaT( jd )
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   ------
   Inputs
   ------
   jd           (1,1) Julian date

   -------
   Outputs
   -------
   dt           (1,1) Time difference

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   References:  U.S. Naval Observatory, MICA, U.S. Naval Observatory
                Washington, D.C., p. C-1.
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Children:

Common: Graphics/NewFig
Common: Graphics/TextS
Common: Graphics/TitleS
Common: Graphics/XLabelS
Common: Graphics/YLabelS
Common: Time/Date2FY
Common: Time/JD2Date