code: func calcJulianCentury(julianDay []float64) (julianCentury []float64) {
  	for index := 0; index < len(julianDay); index++ {
  		temp := (julianDay[index] - 2451545.0) / 36525.0
  		julianCentury = append(julianCentury, temp)
  	}
  	return
  }
docs: // Calculate the Julian Century based on the formula: (julianDay - 2451545.0) / 36525.0
  // julianDay - Julian day vector calculated by the calcJulianDay function
  // Return Julian century slice