diff --git a/503.html b/503.html
index e69de29..ca562e7 100644
--- a/503.html
+++ b/503.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <title>503 - Unavailable: Backup in progress</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+
+    <style>
+        body {
+            margin: 0 auto;
+            padding: 0;
+            width: 85%;
+            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif
+        }
+    </style>
+</head>
+
+<body>
+    <h1>Bad timing!</h1>
+    <p>Seems you're trying to access me during my daily backup window.  Don't
+    worry though, I should be up and running again very soon.</p>
+    <p>My average backup window duration is around 10 minutes during which time
+    I'm quite busy copying your super-important files to my ultra-secret hiding
+    place so they stay safe in case anything ever happens to me!</p>
+    <h3><em>I'm really sorry for the delay.  Please try me again soon!</em></h3>
+</body>
+
+</html>
\ No newline at end of file
