code: public static String naturalTime(Date reference, Date duration)
      {
          return context.get().formatRelativeDate(reference, duration);
      }
docs: Computes both past and future relative dates.
  
  <p>
  
  E.g. 'one day ago', 'one day from now', '10 years ago', '3 minutes from
  now', 'right now' and so on.
  
  @param reference
  The reference
  @param duration
  The duration
  @return String representing the relative date