diff --git a/WHATSNEW b/WHATSNEW
index 81842d77c..59876e508 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -146,6 +146,9 @@ Fixed bugs:
 * <different> selector can now be nested directly under a fileset
   Bugzilla Report 20220.
 
+* <cvstagdiff> had a problem with "dd-MM-yy hh:mm:ss" formats
+  Bugzilla Report 15995.
+
 Other changes:
 --------------
 * Six new Clearcase tasks added.
diff --git a/docs/manual/CoreTasks/cvstagdiff.html b/docs/manual/CoreTasks/cvstagdiff.html
index 6dbb8e76c..d4d595c32 100644
--- a/docs/manual/CoreTasks/cvstagdiff.html
+++ b/docs/manual/CoreTasks/cvstagdiff.html
@@ -27,7 +27,8 @@ from the command line in the target directory in which you are working.
   <tr>
     <td valign="top">startDate</td>
     <td valign="top">The earliest date from which diffs are to be
-     included in the report.</td>
+     included in the report.<br/>
+     accepts all formats accepted by the cvs command for -D date_spec arguments</td>
   </tr>
   <tr>
     <td valign="top">endTag</td>
@@ -38,7 +39,8 @@ from the command line in the target directory in which you are working.
   <tr>
     <td valign="top">endDate</td>
     <td valign="top">The latest date from which diffs are to be
-     included in the report.</td>
+     included in the report.<br/>
+     accepts all formats accepted by the cvs command for -D date_spec arguments</td>
   </tr>
   <tr>
     <td valign="top">destfile</td>