protected function getRunDate($currentTime = null, $nth = 0, $invert = false, $allowCurrentDate = false)
    {
        if ($currentTime instanceof DateTime) {
            $currentDate = clone $currentTime;
        } elseif ($currentTime instanceof DateTimeImmutable) {
            $currentDate = DateTime::createFromFormat('U', $currentTime->format('U'));
            $currentDate->setTimezone($currentTime->getTimezone());
        } else {
            $currentDate = new DateTime($currentTime ?: 'now');
            $currentDate->setTimezone(new DateTimeZone(date_default_timezone_get()));
        }

        $currentDate->setTime($currentDate->format('H'), $currentDate->format('i'), 0);
        $nextRun = clone $currentDate;
        $nth = (int) $nth;

        // We don't have to satisfy * or null fields
        $parts = array();
        $fields = array();
        foreach (self::$order as $position) {
            $part = $this->getExpression($position);
            if (null === $part || '*' === $part) {
                continue;
            }
            $parts[$position] = $part;
            $fields[$position] = $this->fieldFactory->getField($position);
        }

        // Set a hard limit to bail on an impossible date
        for ($i = 0; $i < $this->maxIterationCount; $i++) {

            foreach ($parts as $position => $part) {
                $satisfied = false;
                // Get the field object used to validate this part
                $field = $fields[$position];
                // Check if this is singular or a list
                if (strpos($part, ',') === false) {
                    $satisfied = $field->isSatisfiedBy($nextRun, $part);
                } else {
                    foreach (array_map('trim', explode(',', $part)) as $listPart) {
                        if ($field->isSatisfiedBy($nextRun, $listPart)) {
                            $satisfied = true;
                            break;
                        }
                    }
                }

                // If the field is not satisfied, then start over
                if (!$satisfied) {
                    $field->increment($nextRun, $invert, $part);
                    continue 2;
                }
            }

            // Skip this match if needed
            if ((!$allowCurrentDate && $nextRun == $currentDate) || --$nth > -1) {
                $this->fieldFactory->getField(0)->increment($nextRun, $invert, isset($parts[0]) ? $parts[0] : null);
                continue;
            }

            return $nextRun;
        }

        // @codeCoverageIgnoreStart
        throw new RuntimeException('Impossible CRON expression');
        // @codeCoverageIgnoreEnd
    }