private function isLessThan1Year($timeDifference)
    {
        return $timeDifference >= (
                ($this->secondsPerDay * 59) +
                ($this->secondsPerHour * 23) +
                ($this->secondsPerMinute * 59) +
                30
            )
            &&
            $timeDifference < $this->secondsPerYear;
    }