poliander / cron

        $current = sscanf($dtime->format('i G j n Y w'), '%d %d %d %d %d %d');

        switch (true) {

            case ($pointer[1] !== $current[1]):

                $pointer[1] = $current[1];

                $dtime->setTime($current[1], 0);

                break;

            case ($pointer[0] !== $current[0]):

                $pointer[0] = $current[0];

                $dtime->setTime($current[1], 0);

                break;

            case ($pointer[0] !== $current[0]):

                $pointer[0] = $current[0];

                $dtime->setTime($current[1], $current[0]);

                break;

            case ($pointer[2] !== $current[2]):

                $pointer[2] = $current[2];

                $dtime->setTime($current[1], $current[0]);

                break;

            case ($pointer[2] !== $current[2]):

                $pointer[2] = $current[2];

                $dtime->setTime(0, 0);

                break;

            case ($pointer[3] !== $current[3]):

                $pointer[3] = $current[3];