diff --git a/frontend/src/utils/__tests__/dateTimeUtils.test.js b/frontend/src/utils/__tests__/dateTimeUtils.test.js
index 3bc642af..0e841074 100644
--- a/frontend/src/utils/__tests__/dateTimeUtils.test.js
+++ b/frontend/src/utils/__tests__/dateTimeUtils.test.js
@@ -132,14 +132,14 @@ describe('dateTimeUtils', () => {
 
   describe('isSame', () => {
     it('should return true when dates are same day', () => {
-      const date1 = '2024-01-15T10:00:00Z';
-      const date2 = '2024-01-15T11:00:00Z';
+      const date1 = '2024-01-15 10:00:00';
+      const date2 = '2024-01-15 11:00:00';
       expect(dateTimeUtils.isSame(date1, date2)).toBe(true);
     });
 
     it('should return false when dates are different days', () => {
-      const date1 = '2024-01-15T10:00:00Z';
-      const date2 = '2024-01-16T10:00:00Z';
+      const date1 = '2024-01-15 10:00:00';
+      const date2 = '2024-01-16 10:00:00';
       expect(dateTimeUtils.isSame(date1, date2)).toBe(false);
     });
 
diff --git a/frontend/src/utils/components/__tests__/SeriesModalUtils.test.js b/frontend/src/utils/components/__tests__/SeriesModalUtils.test.js
index d986cfcc..5f4f4490 100644
--- a/frontend/src/utils/components/__tests__/SeriesModalUtils.test.js
+++ b/frontend/src/utils/components/__tests__/SeriesModalUtils.test.js
@@ -353,7 +353,7 @@ describe('SeriesModalUtils', () => {
     it('should format valid air date', () => {
       const episode = { air_date: '2024-01-15' };
       const formatted = getEpisodeAirdate(episode);
-      expect(formatted).toMatch(/1\/1[4|5]\/2024/);
+      expect(formatted).toBe(new Date('2024-01-15').toLocaleDateString());
     });
 
     it('should return N/A for missing air date', () => {
diff --git a/frontend/src/utils/forms/__tests__/RecordingUtils.test.js b/frontend/src/utils/forms/__tests__/RecordingUtils.test.js
index 6e3ae901..db74a1f9 100644
--- a/frontend/src/utils/forms/__tests__/RecordingUtils.test.js
+++ b/frontend/src/utils/forms/__tests__/RecordingUtils.test.js
@@ -111,7 +111,7 @@ describe('RecordingUtils', () => {
 
   describe('toDateString', () => {
     it('formats a Date to YYYY-MM-DD', () => {
-      const d = new Date('2024-06-15T12:00:00Z');
+      const d = new Date(2024, 5, 15, 12, 0, 0);
       const result = toDateString(d);
       expect(result).toBe('2024-06-15');
     });