protected function adjustHour($rescheduledTime)
    {
        if ($this->hour !== null) {
            // Reset the number of minutes and set the scheduled hour to the one specified with setHour()
            $rescheduledTime = mktime($this->hour,
                0,
                date('s', $rescheduledTime),
                date('n', $rescheduledTime),
                date('j', $rescheduledTime),
                date('Y', $rescheduledTime)
            );
        }
        return $rescheduledTime;
    }