diff --git a/functions.php b/functions.php
index 9a36de2..02c79be 100644
--- a/functions.php
+++ b/functions.php
@@ -136,6 +136,14 @@ class LightStatus {
     }
   }
 
+  public function setClientLastSeen() {
+    $this->times['clientLastSeen'] = time();
+    $this->saveTimes();
+  }
+  public function getClientLastSeen() {
+    return $this->times['clientLastSeen'];
+  }
+
 
 
   private function readTimes() {
diff --git a/index.php b/index.php
index a86ff43..31401e6 100644
--- a/index.php
+++ b/index.php
@@ -12,6 +12,9 @@ $light->update();
 
 $error_string = "";
 
+$lastSeenTimeStr = date("H:i:s, Y-m-d",($light->getClientLastSeen()));
+$lastSeenTimeDiff = (time()-$light->getClientLastSeen());
+
 // route actions
 if (isset($_GET['action'])) {
   if ($_GET['action'] == 'enlighten') {
@@ -66,7 +69,7 @@ if (isset($_GET['action'])) {
   <meta name="robots" content="noindex, nofollow">
 
   <link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
-  <link rel="stylesheet" href="style.css">
+  <link rel="stylesheet" href="style.css?v1.1">
 
 </head>
 <body class="container <?php echo ($light->isNight) ? 'dark' : 'light' ?>">
@@ -103,6 +106,10 @@ if (isset($_GET['action'])) {
     <tr>
       <td>Nacht (ja/nein):</td><td><?php echo ($light->isNight) ? "ja" : "nein" ?></td>
     </tr>
+    <tr>
+      <td>Client Last Seen:</td><td><?php echo $lastSeenTimeStr ?>;
+      vor&nbsp;<?php echo (int)($lastSeenTimeDiff/60).':'.($lastSeenTimeDiff - (int)($lastSeenTimeDiff/60) * 60) ?>&nbsp;Min:Sek</td>
+    </tr>
   </table>
 
   <h2>Einstellungen</h2>
@@ -128,7 +135,9 @@ if (isset($_GET['action'])) {
         <input type="time" class="form-control" name="time3-stop" value="<?php echo $light->times['time3']['off'] ?>">
       </div>
     </div>
-    <button type="submit" class="btn btn-primary">Zeiten ändern</button>
+    <div class="row">
+      <div class="col-xs-9 col-xs-push-3 col-sm-10 col-sm-push-2"><button type="submit" class="btn btn-primary">Zeiten ändern</button></div>
+    </div>
   </form>
 
 </body>
diff --git a/service.php b/service.php
index 03a9f0d..8206db6 100644
--- a/service.php
+++ b/service.php
@@ -9,6 +9,7 @@ include "functions.php";
 
 $light = new LightStatus();
 $light->update();
+$light->setClientLastSeen();
 
 echo $light;
 ?>
diff --git a/style.css b/style.css
index f30cb52..ffecb00 100644
--- a/style.css
+++ b/style.css
@@ -14,6 +14,9 @@ table {
   margin-top: 1em;
   margin-bottom: 1em;
 }
+table tr td {
+  vertical-align: top;
+}
 table tr>td:first-child {
   padding-right: 0.75em;
   text-align: right;
