diff --git a/htdocs/admin/system/dolibarr.php b/htdocs/admin/system/dolibarr.php
index 59f3b3f3856..675638bf000 100644
--- a/htdocs/admin/system/dolibarr.php
+++ b/htdocs/admin/system/dolibarr.php
@@ -177,13 +177,20 @@ $var=!$var;
 print '<tr '.$bc[$var].'><td width="300">&nbsp; => dol_get_first_day(1970,1,false)</td><td>'.dol_get_first_day(1970,1,false).' &nbsp; &nbsp; (=> dol_print_date() or idate() of this value = '.dol_print_date(dol_get_first_day(1970,1,false),'dayhour').')</td>';
 $var=!$var;
 print '<tr '.$bc[$var].'><td width="300">&nbsp; => dol_get_first_day(1970,1,true)</td><td>'.dol_get_first_day(1970,1,true).' &nbsp; &nbsp; (=> dol_print_date() or idate() of this value = '.dol_print_date(dol_get_first_day(1970,1,true),'dayhour').')</td>';
-// Parent company
-/*
-$var=!$var;
-print '<tr '.$bc[$var].'><td width="300">'.$langs->trans("CompanyTZ").'</td><td>'.$langs->trans("FeatureNotYetAvailable").'</td></tr>'."\n";
-$var=!$var;
-print '<tr '.$bc[$var].'><td width="300">&nbsp; => '.$langs->trans("CompanyHour").'</td><td>'.$langs->trans("FeatureNotYetAvailable").'</td></tr>'."\n";
-*/
+// Database timezone
+if ($conf->db->type == 'mysql' || $conf->db->type == 'mysqli')
+{
+	$var=!$var;
+	print '<tr '.$bc[$var].'><td width="300">'.$langs->trans("MySQLTimeZone").' (database)</td><td>';	// Timezone server base
+	$sql="SHOW VARIABLES where variable_name = 'system_time_zone'";
+	$resql = $db->query($sql);
+	if ($resql)
+	{
+		$obj = $db->fetch_object($resql);
+		print $form->textwithtooltip($obj->Value,$langs->trans('TZHasNoEffect'),2,1,img_info(''));
+	}
+	print '</td></tr>'."\n";
+}
 // Client
 $var=!$var;
 $tz=(int) $_SESSION['dol_tz'] + (int) $_SESSION['dol_dst'];
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index b46f2c57be4..a5c2d1e19fe 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -63,6 +63,8 @@ ShowPreview=Show preview
 PreviewNotAvailable=Preview not available
 ThemeCurrentlyActive=Theme currently active
 CurrentTimeZone=TimeZone PHP (server)
+MySQLTimeZone=TimeZone MySql (database)
+TZHasNoEffect=Dates are stored and returned by database server as if they were kept as submited string. The timezone has effect only when using UNIX_TIMESTAMP function (that should not be used by Dolibarr, so database TZ should have no effect, even if changed after data was entered). 
 Space=Space
 Table=Table
 Fields=Fields