Enter Year, Month and Day and Hour(0,6,12,18z) for composites For example, 1999 1 1 18
(Don't type in the z).
To subtract one set of days from
another, use a minus sign (-) before the years of the days that are to be subtracted. Default is last available date for variable.
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
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