diff --git a/eg_geiss_bauherren.py b/eg_geiss_bauherren.py
index 471a761..5a543ef 100644
--- a/eg_geiss_bauherren.py
+++ b/eg_geiss_bauherren.py
@@ -51,7 +51,7 @@ def load(filename):
                 ISO_CAL_KW_LOC = 1
                 kwStartDate = startDateParsed.isocalendar()[ISO_CAL_KW_LOC]
                 if kw < kwStartDate:
-                    blowerdoorDate = "{} KW-{}".format(startDateParsed.year +1, kw)
+                    blowerdoorDate = "{} KW-{:02d}".format(startDateParsed.year +1, kw)
                 else:
                     blowerdoorDate = "{} KW-{}".format(startDateParsed.year, kw)
 
diff --git a/templates/head.html b/templates/head.html
index 6105517..0d3ea3a 100644
--- a/templates/head.html
+++ b/templates/head.html
@@ -17,6 +17,15 @@
 <!-- mdb -->
 <link href="/static/css/mdb.min.css" rel="stylesheet">
 <script defer src="/static/js/mdb.min.js"></script>
+<script defer src="/static/js/addons/datatables.min.js"></script>
 
 <!-- Custom JS/CSS -->
 <link href="/static/site.css" rel="stylesheet">
+
+<script>
+function datesSorter(a, b) {
+    if (new Date(a) < new Date(b)) return 1;
+    if (new Date(a) > new Date(b)) return -1;
+    return 0;
+  }
+</script>
\ No newline at end of file
diff --git a/templates/index.html b/templates/index.html
index 935b156..c3caa56 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -11,11 +11,11 @@
             cellspacing="0">
         <thead>
             <tr>
-                <th class="th-sm font-weight-bold">Dokument</th>
+                <th class="th-sm sorting font-weight-bold">Dokument</th>
                 <th class="th-sm font-weight-bold">Ort</th>
                 <th class="th-sm font-weight-bold">Blowerdoor KW</th>
                 <th class="th-sm font-weight-bold">Bauherr</th>
-                <th class="th-sm font-weight-bold">Dokument Erstellungsdatum</th>
+                <th data-sorter="datesSorter" class="th-sm font-weight-bold">Dokument Erstellungsdatum (Jahr/Monat/Tag)</th>
             </tr>
         </thead>
         <tbody>
@@ -25,7 +25,7 @@
                <td style="line-height: 45px;">{{ bd.location }}</td>
                <td style="line-height: 45px;">{{ bd.blowerdoorDate }}</td>
                <td style="line-height: 45px;">{{ bd.customer }}</td>
-               <td style="line-height: 45px;">{{ bd.pdfDate.strftime("%d.%m.%Y") }}</td>
+               <td style="line-height: 45px;">{{ bd.pdfDate.strftime("%Y/%m/%d") }}</td>
            </tr>
            {% endfor %}
         </tbody>
@@ -33,7 +33,9 @@
 
     <script defer>
         $(document).ready(function () {
-            $('#tableMain').DataTable();
+            $('#tableMain').DataTable({
+                "order" : [[ 3, "desc" ]]
+            });
             $('.dataTables_length').addClass('bs-select');
         });
     </script>