diff --git a/lang/en_utf8/langconfig.php b/lang/en_utf8/langconfig.php
index cfc066e302d..d5f3d9f5c12 100644
--- a/lang/en_utf8/langconfig.php
+++ b/lang/en_utf8/langconfig.php
@@ -14,6 +14,7 @@ $string['oldcharset'] = 'ISO-8859-1';
 $string['strftimedate'] = '%%d %%B %%Y';
 $string['strftimedateshort'] = '%%d %%B';
 $string['strftimedatetime'] = '%%d %%B %%Y, %%I:%%M %%p';
+$string['strftimedatetimeshort'] = '%%d/%%m/%%y, %%H:%%M';
 $string['strftimedaydate'] = '%%A, %%d %%B %%Y';
 $string['strftimedaydatetime'] = '%%A, %%d %%B %%Y, %%I:%%M %%p';
 $string['strftimedayshort'] = '%%A, %%d %%B';
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 3cfc956de32..44b91041cf9 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -5162,7 +5162,7 @@ function get_string($identifier, $module='', $a=NULL, $extralocations=NULL) {
                             'parentlanguage', 'strftimedate', 'strftimedateshort', 'strftimedatetime',
                             'strftimedaydate', 'strftimedaydatetime', 'strftimedayshort', 'strftimedaytime',
                             'strftimemonthyear', 'strftimerecent', 'strftimerecentfull', 'strftimetime',
-                            'thischarset', 'thisdirection', 'thislanguage');
+                            'thischarset', 'thisdirection', 'thislanguage', 'strftimedatetimeshort');
 
     $filetocheck = 'langconfig.php';
     $defaultlang = 'en_utf8';
diff --git a/message/discussion.php b/message/discussion.php
index 8f82b25bf47..220b561381a 100644
--- a/message/discussion.php
+++ b/message/discussion.php
@@ -199,8 +199,8 @@
 
     if ($messages = get_records_select('message_read', "(useridto = '$USER->id' AND useridfrom = '$userid' AND timeread > '$start' $lastsql) OR (useridto = '$userid' AND useridfrom = '$USER->id' AND timeread > '$start' $lastsql)")) {
         foreach ($messages as $message) {
-            $time = userdate($message->timecreated, get_string('strftimedaytime'));
-
+            $time = userdate($message->timecreated, get_string('strftimedatetimeshort'));
+            
             if ($message->useridfrom == $USER->id) {
                 $fullname = $mefullname;
             } else {
@@ -223,7 +223,7 @@
 
     if ($messages = get_records_select('message', "useridto = '$userid' AND useridfrom = '$USER->id' $lastsql")) {
         foreach ($messages as $message) {
-            $time = userdate($message->timecreated, get_string('strftimedaytime'));
+            $time = userdate($message->timecreated, get_string('strftimedatetimeshort'));
 
             $printmessage = format_text($message->message, $message->format, $options, 0);
             $printmessage = '<div class="message other"><span class="author">'.$mefullname.'</span> '.
@@ -241,7 +241,7 @@
 
     if ($messages = get_records_select('message', "useridto = '$USER->id' AND useridfrom = '$userid' $lastsql")) {
         foreach ($messages as $message) {
-            $time = userdate($message->timecreated, get_string('strftimedaytime'));
+            $time = userdate($message->timecreated, get_string('strftimedatetimeshort'));
 
             $printmessage = format_text($message->message, $message->format, $options, 0);
             $printmessage = '<div class="message other"><span class="author">'.$userfullname.'</span> '.
diff --git a/message/lib.php b/message/lib.php
index b36a6526d92..984ae798b3b 100644
--- a/message/lib.php
+++ b/message/lib.php
@@ -408,7 +408,7 @@ function message_print_search_results($frm) {
             echo "</tr>\n";
 
             $blockedcount = 0;
-            $dateformat = get_string('strftimedatetime');
+            $dateformat = get_string('strftimedatetimeshort');
             $strcontext = get_string('context', 'message');
             foreach ($messages as $message) {
 
@@ -910,7 +910,7 @@ function message_format_message(&$message, &$user, $format='', $keywords='', $cl
         if ($format) {
             $dateformat = $format;
         } else {
-            $format = get_string('strftimedaytime');
+            $format = get_string('strftimedatetimeshort');
         }
     }
     $time = userdate($message->timecreated, $dateformat);
diff --git a/message/refresh.php b/message/refresh.php
index 3f480dae708..88532dee93a 100644
--- a/message/refresh.php
+++ b/message/refresh.php
@@ -50,7 +50,7 @@
     if ($messages = get_records_select('message', "useridto = '$USER->id' AND useridfrom = '$userid'",
                                        'timecreated')) {
         foreach ($messages as $message) {
-            $time = userdate($message->timecreated, get_string('strftimedaytime'));
+            $time = userdate($message->timecreated, get_string('strftimedatetimeshort'));
 
             $options = new object();
             $options->para = false;
diff --git a/message/send.php b/message/send.php
index 28094364f02..418dc0cb983 100644
--- a/message/send.php
+++ b/message/send.php
@@ -74,7 +74,7 @@ if (has_capability('moodle/site:sendmessage', get_context_instance(CONTEXT_SYSTE
         $options->newlines = true;
         $message = format_text($message, $format, $options);
 
-        $time = userdate(time(), get_string('strftimedaytime'));
+        $time = userdate(time(), get_string('strftimedatetimeshort'));
         $message = '<div class="message me"><span class="author">'.fullname($USER).'</span> '.
                    '<span class="time">['.$time.']</span>: '.
                    '<span class="content">'.$message.'</span></div>';