diff --git a/packages/backend/src/apps/formatter/__tests__/date-time.common.test.ts b/packages/backend/src/apps/formatter/__tests__/date-time.common.test.ts
index 4b931999d..b8d729315 100644
--- a/packages/backend/src/apps/formatter/__tests__/date-time.common.test.ts
+++ b/packages/backend/src/apps/formatter/__tests__/date-time.common.test.ts
@@ -66,7 +66,7 @@ describe('common date-time formatter functions', () => {
     )
 
     it('supports parsing MyInfo Child date field', () => {
-      const dateTime = parseDateTime('formsgDateField', '25/03/2024')
+      const dateTime = parseDateTime('dd/LL/yyyy', '25/03/2024')
       expect(dateTime.toUnixInteger()).toEqual(1711296000)
     })
   })
diff --git a/packages/backend/src/apps/formatter/__tests__/date-time.format.test.ts b/packages/backend/src/apps/formatter/__tests__/date-time.format.test.ts
index 58bf9ce45..b6c2ac001 100644
--- a/packages/backend/src/apps/formatter/__tests__/date-time.format.test.ts
+++ b/packages/backend/src/apps/formatter/__tests__/date-time.format.test.ts
@@ -71,7 +71,54 @@ describe('convert date time', () => {
       toFormat: 'dd/LL/yy',
       expectedResult: '01/04/24',
     },
-    // TODO: add tests
+    {
+      inputFormat: 'dd/LL/yy',
+      inputValue: '01/04/24',
+      toFormat: 'dd/LL/yyyy',
+      expectedResult: '01/04/2024',
+    },
+    {
+      inputFormat: 'dd/LL/yyyy',
+      inputValue: '01/04/2024',
+      toFormat: 'dd LLLL yyyy',
+      expectedResult: '01 April 2024',
+    },
+    {
+      inputFormat: 'dd LLLL yyyy',
+      inputValue: '01 April 2024',
+      toFormat: 'yyyy/LL/dd',
+      expectedResult: '2024/04/01',
+    },
+    {
+      inputFormat: 'yyyy/LL/dd',
+      inputValue: '2024/04/01',
+      toFormat: 'hh:mm a',
+      expectedResult: '12:00 am',
+    },
+    {
+      inputFormat: 'hh:mm a',
+      inputValue: '11:45 pm',
+      toFormat: 'hh:mm:ss a',
+      expectedResult: '11:45:00 pm',
+    },
+    {
+      inputFormat: 'hh:mm:ss a',
+      inputValue: '11:45:00 pm',
+      toFormat: 'hh:mm a',
+      expectedResult: '11:45 pm',
+    },
+    {
+      inputFormat: 'dd LLL yyyy hh:mm a',
+      inputValue: '01 Apr 2024 11:45 pm',
+      toFormat: 'dd LLL yyyy',
+      expectedResult: '01 Apr 2024',
+    },
+    {
+      inputFormat: 'dd LLL yyyy hh:mm:ss a',
+      inputValue: '01 Apr 2024 11:45:30 pm',
+      toFormat: 'hh:mm:ss a',
+      expectedResult: '11:45:30 pm',
+    },
   ])('can handle all supported input formats', (testParams) => {
     const { inputFormat, inputValue, toFormat, expectedResult } = testParams
     $.step.parameters = {
diff --git a/packages/backend/src/apps/formatter/actions/date-time/common/date-time-format.ts b/packages/backend/src/apps/formatter/actions/date-time/common/date-time-format.ts
index 322682d5e..b9f26db51 100644
--- a/packages/backend/src/apps/formatter/actions/date-time/common/date-time-format.ts
+++ b/packages/backend/src/apps/formatter/actions/date-time/common/date-time-format.ts
@@ -61,14 +61,17 @@ const formatConverters = Object.assign({
     stringify: (dateTime: DateTime): string => dateTime.toFormat('dd MMM yyyy'),
   },
   ...Object.fromEntries(
-    commonDateFormats.map((format) => [
-      format,
-      {
-        description: format,
-        parse: (input: string): DateTime => DateTime.fromFormat(input, format),
-        stringify: (dateTime: DateTime): string => dateTime.toFormat(format),
-      },
-    ]),
+    commonDateFormats
+      .filter((format) => format !== 'dd LLL yyyy') // Exclude repeated option due to formsgDateField
+      .map((format) => [
+        format,
+        {
+          description: format,
+          parse: (input: string): DateTime =>
+            DateTime.fromFormat(input, format),
+          stringify: (dateTime: DateTime): string => dateTime.toFormat(format),
+        },
+      ]),
   ),
 }) satisfies Record<z.infer<typeof supportedFormats>, DateFormatConverter>
 
@@ -104,7 +107,10 @@ export const field = {
       description: 'Select this if you are transforming a FormSG date field',
       value: supportedFormats.enum.formsgDateField,
     },
-    ...commonDateFormatOptions,
+    // Exclude repeated option due to formsgDateField
+    ...commonDateFormatOptions.filter(
+      (option) => option.value !== 'dd LLL yyyy',
+    ),
   ],
 } satisfies IField