diff --git a/app/data/session-data-defaults.js b/app/data/session-data-defaults.js
index 3e1d9fb..c18709d 100644
--- a/app/data/session-data-defaults.js
+++ b/app/data/session-data-defaults.js
@@ -4,7 +4,7 @@ module.exports = {
   messages: [
     {
       id: "3fa85f64-5717-4562-b3fc-2c963f66afa6",
-      sentTime: "2025-10-21",
+      sentTime: "2025-10-21T15:31Z",
       sender: "Portland Street Great Westood Surgery",
       content: "Reminder of your telephone appointment with your GP on Friday 23 October at 1:30pm.",
       read: false,
diff --git a/app/views/message.html b/app/views/message.html
index 416ec89..1e0ab43 100644
--- a/app/views/message.html
+++ b/app/views/message.html
@@ -12,7 +12,7 @@
 
 {% block content %}
   <h1 class="nhsuk-heading-xl nhsuk-u-margin-bottom-3">{{ pageName }}</h1>
-  <p class="nhsuk-u-secondary-text-colour nhsuk-u-margin-bottom-5">Sent {{ message.sentTime | formatDate }} at 7:12pm</p>
+  <p class="nhsuk-u-secondary-text-colour nhsuk-u-margin-bottom-5">Sent {{ message.sentTime | formatDate }} at {{ message.sentTime | formatTime }}</p>
 
   <p>{{ message.content }}</p>