modules/ModuleDlstatsStatistics.php
protected function getStartDate()
    {
        $StartDate = false;
        $objStartDate = \Database::getInstance()->prepare("SELECT
                                                           MIN(`tstamp`) AS YMD
                                                           FROM `tl_dlstatdets`
                                                           WHERE 1")
                                                ->execute();
        if ($objStartDate->YMD !== null)
        {
            $StartDate = $this->parseDate($GLOBALS['TL_CONFIG']['dateFormat'], $objStartDate->YMD);

        }

        return $StartDate;
    }
protected function getStartDate()
    {
        $StartDate = false;
        $objStartDate = \Database::getInstance()->prepare("SELECT
                                                           MIN(`tstamp`) AS YMD
                                                           FROM `tl_dlstatdets`
                                                           WHERE 1")
                                                ->execute();
        if ($objStartDate->YMD !== null)
        {
            $StartDate = $this->parseDate($GLOBALS['TL_CONFIG']['dateFormat'], $objStartDate->YMD);

        }

        return $StartDate;
    }
Get Startdate of detailed logging
@return string    Date