public function GetShippingDateLowerBound()
    {
        $iAgeInDays = $this->Shopreviewmail_MailDelay;
        $iNow = time();
        $hour = date('G', $iNow);
        $minute = date('i', $iNow);
        if ('0' == substr($minute, 0, 1)) {
            $minute = substr($minute, 1);
        }
        $second = date('s', $iNow);
        if ('0' == substr($second, 0, 1)) {
            $second = substr($second, 1);
        }
        $iLowerBound = mktime($hour, $minute, $second, date('n', $iNow), date('j', $iNow) - $iAgeInDays, date('Y', $iNow));

        return $iLowerBound;
    }