diff --git a/CHANGELOG.md b/CHANGELOG.md
index 731ef6c3..55520253 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,6 +31,7 @@ _This release is scheduled to be released on 2025-01-01._
 - [updatenotification] Fix pm2 using detection when pm2 script is in MagicMirror root folder (#3576)
 - [core] Fix loading node_helper of modules: avoid black screen, display errors and continue loading with next module (#3578)
 - [weather] changed default value for weatherEndpoint of provider openweathermap to "/onecall" (#3574)
+- [calendar] fix one testcase which had a date expired problem..
 
 ## [2.29.0] - 2024-10-01
 
diff --git a/tests/configs/modules/calendar/show-duplicates-in-calendar.js b/tests/configs/modules/calendar/show-duplicates-in-calendar.js
index 7ad42094..a4246581 100644
--- a/tests/configs/modules/calendar/show-duplicates-in-calendar.js
+++ b/tests/configs/modules/calendar/show-duplicates-in-calendar.js
@@ -27,6 +27,10 @@ let config = {
 	]
 };
 
+Date.now = () => {
+	return new Date("15 Sep 2024 12:30:00 GMT").valueOf();
+};
+
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;