diff --git a/content/getting-started/note.md b/content/getting-started/note.md
index 5627e62..c7df34e 100644
--- a/content/getting-started/note.md
+++ b/content/getting-started/note.md
@@ -8,7 +8,14 @@ This is a note for anyone using or planning to contribute to ITD. I am {{<raw>}}
 
 {{<raw>}}
 <script>
-    birthday = new Date("April 24, 2005")
-    document.getElementById("age").innerHTML = (new Date).getFullYear() - birthday.getFullYear()
+    birthday = new Date("April 24, 2005");
+    now =new Date();
+    age = now.getFullYear() - birthday.getFullYear();
+    if (now.getMonth() < birthday.getMonth()) {
+        age--;
+    } else if (now.getMonth() == birthday.getMonth() && now.getDate() < birthday.getDate()) {
+        age--;
+    }
+    document.getElementById("age").innerHTML = age;
 </script>
 {{</raw>}}
\ No newline at end of file