Microsoft.JScript.DatePrototype.YearFromTime C# (CSharp) Méthode

      private static double YearFromTime(double time){
        double day = Math.Floor(time / msPerDay);
        double year = 1970 + Math.Floor((400 * day + 398) / 146097); //gives us the right year, or right year + 1
        double dfy = DayFromYear(year);
        if (day < dfy){ //The first day of year is beyond day, so we have right year + 1
          year -= 1;
        }
        return year;
      }