diff --git a/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.spec.ts b/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.spec.ts
index 8e0462d084..5abf93d0aa 100644
--- a/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.spec.ts
+++ b/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.spec.ts
@@ -184,7 +184,7 @@ describe('SystemWideAlertFormComponent', () => {
       expectedAlert.message = 'New message';
       expectedAlert.active = true;
       const countDownTo = new Date(2023, 0, 25, 4, 26);
-      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toUTCString();
+      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toISOString();
 
       comp.save();
 
@@ -207,7 +207,7 @@ describe('SystemWideAlertFormComponent', () => {
       expectedAlert.message = 'New message';
       expectedAlert.active = true;
       const countDownTo = new Date(2023, 0, 25, 4, 26);
-      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toUTCString();
+      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toISOString();
 
       comp.save(false);
 
@@ -254,7 +254,7 @@ describe('SystemWideAlertFormComponent', () => {
       expectedAlert.message = 'New message';
       expectedAlert.active = true;
       const countDownTo = new Date(2023, 0, 25, 4, 26);
-      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toUTCString();
+      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toISOString();
 
       comp.save();
 
@@ -276,7 +276,7 @@ describe('SystemWideAlertFormComponent', () => {
       expectedAlert.message = 'New message';
       expectedAlert.active = true;
       const countDownTo = new Date(2023, 0, 25, 4, 26);
-      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toUTCString();
+      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toISOString();
 
       comp.save();
 
@@ -301,7 +301,7 @@ describe('SystemWideAlertFormComponent', () => {
       expectedAlert.message = 'New message';
       expectedAlert.active = true;
       const countDownTo = new Date(2023, 0, 25, 4, 26);
-      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toUTCString();
+      expectedAlert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toISOString();
 
       comp.save();
 
diff --git a/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.ts b/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.ts
index ea1c0a55f0..85365fa204 100644
--- a/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.ts
+++ b/src/app/system-wide-alert/alert-form/system-wide-alert-form.component.ts
@@ -253,7 +253,7 @@ export class SystemWideAlertFormComponent implements OnInit {
     alert.active = this.formActive.value;
     if (this.counterEnabled$.getValue()) {
       const countDownTo = new Date(this.date.year, this.date.month - 1, this.date.day, this.time.hour, this.time.minute);
-      alert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toUTCString();
+      alert.countdownTo = utcToZonedTime(countDownTo, 'UTC').toISOString();
     } else {
       alert.countdownTo = null;
     }