diff --git a/README.md b/README.md
index 3cd1f32..d4963cf 100644
--- a/README.md
+++ b/README.md
@@ -167,6 +167,14 @@ Set custom files and entire folders to ignore within your `/docs` folder. For fi
 		}
 	}
 
+###Timezone
+If your server does not have a default timezone set in php.ini, it may return errors when it tries to generate the last modified date/time for docs. To fix these errors, specify a timezone in your config file. Valid options are available in the [PHP Manual](http://php.net/manual/en/timezones.php).
+
+    {
+        "timezone": "America/Los_Angeles"
+    }
+
+
 ## Running Remotely
 
 Copy the files from the repo to a web server that can run PHP 5.3 or greater.
diff --git a/index.php b/index.php
index 28a6bee..41d0c75 100644
--- a/index.php
+++ b/index.php
@@ -70,6 +70,13 @@ $tree = get_tree("docs", $base_url);
 $homepage_url = homepage_url($tree);
 $docs_url = docs_url($tree);
 
+// If a timezone has been set in the config file, override the default PHP timezone for this application.
+if(isset($options['timezone']))
+{
+	date_default_timezone_set($options['timezone']);
+}
+
+
 // Redirect to docs, if there is no homepage
 if ($homepage && $homepage_url !== '/') {
 	header('Location: '.$homepage_url);