diff --git a/backend/src/routes/adminEvents.js b/backend/src/routes/adminEvents.js
index 797014a..c98002b 100644
--- a/backend/src/routes/adminEvents.js
+++ b/backend/src/routes/adminEvents.js
@@ -77,8 +77,8 @@ router.post('/', adminAuth, [
       welcome_message,
       color_theme,
       share_link: shareLink,
-      expires_at,
-      created_at: new Date()
+      expires_at: expires_at.toISOString(),
+      created_at: new Date().toISOString()
     });
     
     // Log activity
@@ -180,10 +180,14 @@ router.get('/', adminAuth, async (req, res) => {
       return acc;
     }, {});
 
-    // Add photo counts to events
+    // Add photo counts to events and convert dates
     const eventsWithCounts = events.map(event => ({
       ...event,
-      photo_count: photoCountMap[event.id] || 0
+      photo_count: photoCountMap[event.id] || 0,
+      // Convert Unix timestamps to ISO strings
+      created_at: event.created_at ? new Date(event.created_at).toISOString() : null,
+      expires_at: event.expires_at ? new Date(event.expires_at).toISOString() : null,
+      archived_at: event.archived_at ? new Date(event.archived_at).toISOString() : null
     }));
 
     res.json({