Piwik\Tracker\Visit::getTimezoneForSite PHP Method

    private function getTimezoneForSite($idSite)
    {
        try {
            $site = Cache::getCacheWebsiteAttributes($idSite);
        } catch (UnexpectedWebsiteFoundException $e) {
            return null;
        }
        if (!empty($site['timezone'])) {
            return $site['timezone'];
        }
    }