diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95c7d112c2..d50d7d153d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,6 +32,7 @@ _This release is scheduled to be released on 2025-01-01._
 - [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)
 - [tests] fix electron tests with mock dates, the mock on server side was missing (#3597)
+- [tests] fix testcases with hard coded Date.now (#3597)
 
 ## [2.29.0] - 2024-10-01
 
diff --git a/tests/configs/modules/calendar/exdate_la_at_midnight_dst.js b/tests/configs/modules/calendar/exdate_la_at_midnight_dst.js
index c9fbb4da1c..b58475752f 100644
--- a/tests/configs/modules/calendar/exdate_la_at_midnight_dst.js
+++ b/tests/configs/modules/calendar/exdate_la_at_midnight_dst.js
@@ -30,10 +30,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("19 Oct 2023 12:30:00 GMT-07:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/exdate_la_at_midnight_std.js b/tests/configs/modules/calendar/exdate_la_at_midnight_std.js
index e59c4114f5..e9cab5d772 100644
--- a/tests/configs/modules/calendar/exdate_la_at_midnight_std.js
+++ b/tests/configs/modules/calendar/exdate_la_at_midnight_std.js
@@ -30,10 +30,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("19 Oct 2023 12:30:00 GMT-07:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/exdate_la_before_midnight.js b/tests/configs/modules/calendar/exdate_la_before_midnight.js
index c91188d3cc..bfb7218224 100644
--- a/tests/configs/modules/calendar/exdate_la_before_midnight.js
+++ b/tests/configs/modules/calendar/exdate_la_before_midnight.js
@@ -30,10 +30,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("19 Oct 2023 12:30:00 GMT-07:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/exdate_syd_at_midnight_dst.js b/tests/configs/modules/calendar/exdate_syd_at_midnight_dst.js
index edd09798a4..7ce81cd779 100644
--- a/tests/configs/modules/calendar/exdate_syd_at_midnight_dst.js
+++ b/tests/configs/modules/calendar/exdate_syd_at_midnight_dst.js
@@ -30,10 +30,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("14 Sep 2023 12:30:00 GMT+10:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/exdate_syd_at_midnight_std.js b/tests/configs/modules/calendar/exdate_syd_at_midnight_std.js
index a6b5fdfbb6..06f974f05a 100644
--- a/tests/configs/modules/calendar/exdate_syd_at_midnight_std.js
+++ b/tests/configs/modules/calendar/exdate_syd_at_midnight_std.js
@@ -30,10 +30,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("14 Sep 2023 12:30:00 GMT+10:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/exdate_syd_before_midnight.js b/tests/configs/modules/calendar/exdate_syd_before_midnight.js
index b8b3017da2..f83518ed87 100644
--- a/tests/configs/modules/calendar/exdate_syd_before_midnight.js
+++ b/tests/configs/modules/calendar/exdate_syd_before_midnight.js
@@ -30,10 +30,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("14 Sep 2023 12:30:00 GMT+10:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/rrule_until.js b/tests/configs/modules/calendar/rrule_until.js
index 90daa9a3e4..ace727f5bc 100644
--- a/tests/configs/modules/calendar/rrule_until.js
+++ b/tests/configs/modules/calendar/rrule_until.js
@@ -22,10 +22,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("07 Mar 2024 10:38:00 GMT-07:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;
diff --git a/tests/configs/modules/calendar/sliceMultiDayEvents.js b/tests/configs/modules/calendar/sliceMultiDayEvents.js
index 987ccd8945..c46e316eb3 100644
--- a/tests/configs/modules/calendar/sliceMultiDayEvents.js
+++ b/tests/configs/modules/calendar/sliceMultiDayEvents.js
@@ -22,10 +22,6 @@ let config = {
 	]
 };
 
-Date.now = () => {
-	return new Date("01 Sept 2024 10:38:00 GMT+2:00").valueOf();
-};
-
 /*************** DO NOT EDIT THE LINE BELOW ***************/
 if (typeof module !== "undefined") {
 	module.exports = config;