public static function getSandboxExpiration(){
        $datetime   = new \DateTime();
        $d          = new \DateTime($datetime->format('Y-m-d'));
        $weekday    = $d->format('w');
        $weekNumber = $d->format('W');
        $diff       = $weekNumber % 2 ? 7 : 6 - $weekday;
        $d->modify(sprintf('+ %d day', $diff));
        return \tao_helpers_Date::displayInterval($d, \tao_helpers_Date::FORMAT_INTERVAL_LONG);
    }