diff --git a/CHANGELOG b/CHANGELOG
index 6a433e522..7b3bb87b5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -201,6 +201,8 @@
   SeedDMS_Bootstrap_Style::getDropFolderChooserHtml() (CVE-2020-28726)
 - prevent cross site scripting in views/bootstrap/class.DropFileChooser.php
   folderid wasn't checked propperly for being an integer (CVE-2020-28727)
+- output format for dates can be configured
+- add filter function to notification service
 
 --------------------------------------------------------------------------------
                      Changes in version 5.1.20
diff --git a/views/bootstrap/class.Bootstrap.php b/views/bootstrap/class.Bootstrap.php
index f9c2eebe2..1bf89e5c9 100644
--- a/views/bootstrap/class.Bootstrap.php
+++ b/views/bootstrap/class.Bootstrap.php
@@ -3307,7 +3307,7 @@ $(document).ready(function() {
 			echo $reqName;
 			echo "</td>";
 			echo "<td>";
-			echo "<i style=\"font-size: 80%;\">".$rec['date']." - ";
+			echo "<i style=\"font-size: 80%;\">".getLongReadableDate($rec['date'])." - ";
 			$updateuser = $dms->getUser($rec["userID"]);
 			if(!is_object($updateuser))
 				echo getMLText("unknown_user");
diff --git a/views/bootstrap/class.DocumentVersionDetail.php b/views/bootstrap/class.DocumentVersionDetail.php
index ba9cd5acb..8664dd9f2 100644
--- a/views/bootstrap/class.DocumentVersionDetail.php
+++ b/views/bootstrap/class.DocumentVersionDetail.php
@@ -387,7 +387,7 @@ class SeedDMS_View_DocumentVersionDetail extends SeedDMS_Bootstrap_Style {
 				}
 				print "<tr".($r['status'] == 1 ? ' class="success"' : ($r['status'] == -1 ? ' class="error"' : '')).">\n";
 				print "<td>".$reqName."</td>\n";
-				print "<td><i style=\"font-size: 80%;\">".$r["date"]." - ";
+				print "<td><i style=\"font-size: 80%;\">".getLongReadableDate($r["date"])." - ";
 				/* $updateUser is the user who has done the review */
 				$updateUser = $dms->getUser($r["userID"]);
 				print (is_object($updateUser) ? htmlspecialchars($updateUser->getFullName()." (".$updateUser->getLogin().")") : "unknown user id '".$r["userID"]."'")."</i><br />";
@@ -441,7 +441,7 @@ class SeedDMS_View_DocumentVersionDetail extends SeedDMS_Bootstrap_Style {
 				}
 				print "<tr".($a['status'] == 1 ? ' class="success"' : ($a['status'] == -1 ? ' class="error"' : ($a['status'] == -2 ? ' class=""' : ''))).">\n";
 				print "<td>".$reqName."</td>\n";
-				print "<td><i style=\"font-size: 80%;\">".$a["date"]." - ";
+				print "<td><i style=\"font-size: 80%;\">".getLongReadableDate($a["date"])." - ";
 				/* $updateUser is the user who has done the approval */
 				$updateUser = $dms->getUser($a["userID"]);
 				print (is_object($updateUser) ? htmlspecialchars($updateUser->getFullName()." (".$updateUser->getLogin().")") : "unknown user id '".$a["userID"]."'")."</i><br />";	
@@ -554,7 +554,7 @@ class SeedDMS_View_DocumentVersionDetail extends SeedDMS_Bootstrap_Style {
 					$fullname = $suser->getFullName();
 				else
 					$fullname = "--";
-				echo "<tr><td>".$entry['date']."</td><td>".getOverallStatusText($entry['status'])."</td><td>".$fullname."</td><td>".$entry['comment']."</td></tr>\n";
+				echo "<tr><td>".getLongReadableDate($entry['date'])."</td><td>".getOverallStatusText($entry['status'])."</td><td>".$fullname."</td><td>".$entry['comment']."</td></tr>\n";
 			}
 			print "</tbody>\n</table>\n";
 			$this->contentContainerEnd();
diff --git a/views/bootstrap/class.ViewDocument.php b/views/bootstrap/class.ViewDocument.php
index e2a4c82eb..b77ac22a6 100644
--- a/views/bootstrap/class.ViewDocument.php
+++ b/views/bootstrap/class.ViewDocument.php
@@ -802,7 +802,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 					$fullname = htmlspecialchars($suser->getFullName());
 				else
 					$fullname = "--";
-				echo "<tr><td>".$entry['date']."</td><td>".getOverallStatusText($entry['status'])."</td><td>".$fullname."</td><td>".htmlspecialchars($entry['comment'])."</td></tr>\n";
+				echo "<tr><td>".getLongReadableDate($entry['date'])."</td><td>".getOverallStatusText($entry['status'])."</td><td>".$fullname."</td><td>".htmlspecialchars($entry['comment'])."</td></tr>\n";
 			}
 			print "</tbody>\n</table>\n";
 			$this->contentContainerEnd();
@@ -910,7 +910,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 				if($user->isAdmin() || $r["status"] > -2) {
 					print "<tr>\n";
 					print "<td>".$reqName."</td>\n";
-					print "<td><i style=\"font-size: 80%;\">".$r["date"]." - ";
+					print "<td><i style=\"font-size: 80%;\">".getLongReadableDate($r["date"])." - ";
 					/* $updateUser is the user who has done the review */
 					$updateUser = $dms->getUser($r["userID"]);
 					print (is_object($updateUser) ? htmlspecialchars($updateUser->getFullName()." (".$updateUser->getLogin().")") : "unknown user id '".$r["userID"]."'")."</i><br />";
@@ -1014,7 +1014,7 @@ class SeedDMS_View_ViewDocument extends SeedDMS_Bootstrap_Style {
 				if($user->isAdmin() || $a["status"] > -2) {
 					print "<tr>\n";
 					print "<td>".$reqName."</td>\n";
-					print "<td><i style=\"font-size: 80%;\">".$a["date"]." - ";
+					print "<td><i style=\"font-size: 80%;\">".getLongReadableDate($a["date"])." - ";
 					/* $updateUser is the user who has done the approval */
 					$updateUser = $dms->getUser($a["userID"]);
 					print (is_object($updateUser) ? htmlspecialchars($updateUser->getFullName()." (".$updateUser->getLogin().")") : "unknown user id '".$a["userID"]."'")."</i><br />";