diff --git a/webroot/js/participantSummary.js b/webroot/js/participantSummary.js
index 2a7d011e..2bd06845 100644
--- a/webroot/js/participantSummary.js
+++ b/webroot/js/participantSummary.js
@@ -80,8 +80,8 @@ function loadSiteCallback(result) {
 function loadAPIKeysCallback(result) {
     const textToHighlight = '"disabled": true';
     let resultJson = JSON.parse(result);
-    resultJson = resultJson.map((item) => { 
-        const created = new Date(item.created).toLocaleString();
+    resultJson = resultJson.map((item) => {
+        const created = new Date((item.created)*1000).toLocaleString(); // Convert Unix timestamp in seconds to milliseconds for Date constructor
         return { ...item, created };
     });
     const formatted = prettifyJson(JSON.stringify(resultJson));
@@ -238,4 +238,4 @@ $(document).ready(() => {
                 (err) => { rotateKeysetsErrorHandler(err, '#rotateKeysetsErrorOutput') });
         });
     });
-});
\ No newline at end of file
+});