YMDS2JS Name
      
       YMDS2JS Purpose
      
       Convert to year, month, day, second to "Julian Second".
Category
Calling Sequence
      
       js = ymds2js(y,m,d,s) Inputs
             y,m,d = year, month, day numbers.   in
              s = second into day.                in
Keyword Parameters
Outputs
      
       js = "Julian Second".               out
Common Blocks
Notes
      
       Notes: Julian seconds (not an official unit) serve the
        
         same purpose as Julian Days, interval computations.
        
         The zero point is 0:00 1 Jan 2000, so js < 0 before then.
        
         Julian Seconds are double precision and have a precision
        
         better than 1 millisecond over a span of +/- 1000 years.
               
      
       See also js2ymds, dt_tm_fromjs, dt_tm_tojs, jscheck.
Modification History
      
       R. Sterner, 2 Sep, 1992 
  
 Copyright (C) 1992, Johns Hopkins University/Applied Physics Laboratory
  
 This software may be used, copied, or redistributed as long as it is not
  
 sold and this copyright notice is reproduced on each copy made.  This
  
 routine is provided as is without any express or implied warranties
  
 whatsoever.  Other limitations apply as described in the file disclaimer.txt.