protected function _defineAndCheckDefaultTimeValues($blToTimeStamp)
    {
        // defining time format
        // checking for default values
        $sLocalTimeFormat = \OxidEsales\Eshop\Core\Registry::getConfig()->getConfigParam('sLocalTimeFormat');
        if (!$sLocalTimeFormat || $blToTimeStamp) {
            $sLocalTimeFormat = "ISO";
        }

        return $sLocalTimeFormat;
    }