diff --git a/packages/twenty-front/setupTests.ts b/packages/twenty-front/setupTests.ts
index e5aa41c46..d995aadc1 100644
--- a/packages/twenty-front/setupTests.ts
+++ b/packages/twenty-front/setupTests.ts
@@ -13,4 +13,4 @@ import '@testing-library/jest-dom';
  */
 global.structuredClone = (val) => {
   return JSON.parse(JSON.stringify(val));
-};
+};
\ No newline at end of file
diff --git a/packages/twenty-front/src/modules/localization/utils/__tests__/findAvailableTimeZoneOption.test.ts b/packages/twenty-front/src/modules/localization/utils/__tests__/findAvailableTimeZoneOption.test.ts
index 05e670b59..b1058e7ad 100644
--- a/packages/twenty-front/src/modules/localization/utils/__tests__/findAvailableTimeZoneOption.test.ts
+++ b/packages/twenty-front/src/modules/localization/utils/__tests__/findAvailableTimeZoneOption.test.ts
@@ -1,11 +1,12 @@
 import { findAvailableTimeZoneOption } from '@/localization/utils/findAvailableTimeZoneOption';
-jest.useFakeTimers().setSystemTime(new Date('2024-01-01T00:00:00.000Z'));
 
+// TODO: This test is flaky, datetime retrieve in its scope, if mocked will be different than the one computed to build AVAILABLE_TIME_ZONE_OPTIONS_BY_LABEL
+// We should refactor our tests to start from a controlled mocked date directly within `setupTests.ts`
 describe('findAvailableTimeZoneOption', () => {
   it('should find the matching available IANA time zone select option from a given IANA time zone', () => {
     const ianaTimeZone = 'Europe/Paris';
     const value = 'Europe/Paris';
-    const label = '(GMT+01:00) Central European Standard Time - Paris';
+    const label = '(GMT+02:00) Central European Summer Time - Paris';
 
     const option = findAvailableTimeZoneOption(ianaTimeZone);
 
diff --git a/packages/twenty-front/src/modules/settings/accounts/constants/AvailableTimezoneOptionsByLabel.ts b/packages/twenty-front/src/modules/settings/accounts/constants/AvailableTimezoneOptionsByLabel.ts
index 6e8ea2b3a..eba6bb352 100644
--- a/packages/twenty-front/src/modules/settings/accounts/constants/AvailableTimezoneOptionsByLabel.ts
+++ b/packages/twenty-front/src/modules/settings/accounts/constants/AvailableTimezoneOptionsByLabel.ts
@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/naming-convention */
 /* eslint-disable @nx/workspace-max-consts-per-file */
 import { IANA_TIME_ZONES } from '@/localization/constants/IanaTimeZones';
-import { formatTimeZoneLabel } from '@/settings/accounts/utils/formatTimeZoneLabel';
+import { formatTimeZoneLabel } from '@/localization/utils/formatTimeZoneLabel';
 import { SelectOption } from 'twenty-ui';
 
 export const AVAILABLE_TIME_ZONE_OPTIONS_BY_LABEL = IANA_TIME_ZONES.reduce<
diff --git a/packages/twenty-front/src/modules/settings/accounts/utils/formatTimeZoneLabel.ts b/packages/twenty-front/src/modules/settings/accounts/utils/formatTimeZoneLabel.ts
deleted file mode 100644
index e5f1ac97e..000000000
--- a/packages/twenty-front/src/modules/settings/accounts/utils/formatTimeZoneLabel.ts
+++ /dev/null
@@ -1,29 +0,0 @@
-import defaultLocale from 'date-fns/locale/en-US';
-import { formatInTimeZone } from 'date-fns-tz';
-
-/**
- * Formats a IANA time zone to a select option label.
- * @param ianaTimeZone IANA time zone
- * @returns Formatted label
- * @example 'Europe/Paris' => '(GMT+01:00) Central European Time - Paris'
- */
-export const formatTimeZoneLabel = (ianaTimeZone: string) => {
-  const timeZoneWithGmtOffset = formatInTimeZone(
-    Date.now(),
-    ianaTimeZone,
-    `(OOOO) zzzz`,
-    { locale: defaultLocale },
-  );
-  const ianaTimeZoneParts = ianaTimeZone.split('/');
-  const location =
-    ianaTimeZoneParts.length > 1
-      ? ianaTimeZoneParts.slice(-1)[0].replaceAll('_', ' ')
-      : undefined;
-
-  const timeZoneLabel =
-    !location || timeZoneWithGmtOffset.includes(location)
-      ? timeZoneWithGmtOffset
-      : [timeZoneWithGmtOffset, location].join(' - ');
-
-  return timeZoneLabel;
-};