public function toArray()
    {
        $start    = $this->intervalStart;
        $end      = $this->intervalEnd;
        $period   = new \DatePeriod($start, new \DateInterval('P1D'), $end);
        $days     = array();

        foreach ($period as $current_day) {
            $days[] = $current_day;
        }

        $days[]  = $end;

        return $days;
    }