diff --git a/nextjs/src/models/local/quiz/utils/quizMarkdownUtils.ts b/nextjs/src/models/local/quiz/utils/quizMarkdownUtils.ts
index 1aca211..9ecc095 100644
--- a/nextjs/src/models/local/quiz/utils/quizMarkdownUtils.ts
+++ b/nextjs/src/models/local/quiz/utils/quizMarkdownUtils.ts
@@ -42,7 +42,14 @@ const parseDateOrThrow = (value: string, label: string): string => {
   if (isNaN(date.getTime())) {
     throw new Error(`Error with ${label}: ${value}`);
   }
-  return date.toISOString();
+  const day = String(date.getDate()).padStart(2, "0");
+  const month = String(date.getMonth() + 1).padStart(2, "0"); // Months are zero-based
+  const year = date.getFullYear();
+  const hours = String(date.getHours()).padStart(2, "0");
+  const minutes = String(date.getMinutes()).padStart(2, "0");
+  const seconds = String(date.getSeconds()).padStart(2, "0");
+
+  return `${day}/${month}/${year} ${hours}:${minutes}:${seconds}`;
 };
 
 const parseDateOrNull = (value: string): string | undefined => {
diff --git a/nextjs/src/models/local/tests/markdown/assignmentMarkdown.test.ts b/nextjs/src/models/local/tests/markdown/assignmentMarkdown.test.ts
index a7461bf..01efdc6 100644
--- a/nextjs/src/models/local/tests/markdown/assignmentMarkdown.test.ts
+++ b/nextjs/src/models/local/tests/markdown/assignmentMarkdown.test.ts
@@ -9,8 +9,8 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "here is the description",
-      dueAt: new Date().toISOString(),
-      lockAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
+      lockAt: "21/08/2023 23:59:00",
       submissionTypes: [AssignmentSubmissionType.ONLINE_UPLOAD],
       localAssignmentGroupName: "Final Project",
       rubric: [
@@ -32,8 +32,8 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "here is the description",
-      dueAt: new Date().toISOString(),
-      lockAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
+      lockAt: "21/08/2023 23:59:00",
       submissionTypes: [AssignmentSubmissionType.ONLINE_UPLOAD],
       localAssignmentGroupName: "Final Project",
       rubric: [],
@@ -52,8 +52,8 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "here is the description",
-      dueAt: new Date().toISOString(),
-      lockAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
+      lockAt: "21/08/2023 23:59:00",
       submissionTypes: [],
       localAssignmentGroupName: "Final Project",
       rubric: [
@@ -75,7 +75,7 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "here is the description",
-      dueAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
       lockAt: undefined,
       submissionTypes: [],
       localAssignmentGroupName: "Final Project",
@@ -98,8 +98,8 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "",
-      dueAt: new Date().toISOString(),
-      lockAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
+      lockAt: "21/08/2023 23:59:00",
       submissionTypes: [],
       localAssignmentGroupName: "Final Project",
       rubric: [
@@ -121,8 +121,8 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "test assignment\n---\nsomestuff",
-      dueAt: new Date().toISOString(),
-      lockAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
+      lockAt: "21/08/2023 23:59:00",
       submissionTypes: [],
       localAssignmentGroupName: "Final Project",
       rubric: [],
@@ -141,8 +141,8 @@ describe("AssignmentMarkdownTests", () => {
     const assignment: LocalAssignment = {
       name: "test assignment",
       description: "here is the description",
-      dueAt: new Date().toISOString(),
-      lockAt: new Date().toISOString(),
+      dueAt: "21/08/2023 23:59:00",
+      lockAt: "21/08/2023 23:59:00",
       submissionTypes: [AssignmentSubmissionType.ONLINE_UPLOAD],
       allowedFileUploadExtensions: ["pdf", "txt"],
       localAssignmentGroupName: "Final Project",
diff --git a/nextjs/src/models/local/tests/markdown/quiz/quizDeterministicChecks.test.ts b/nextjs/src/models/local/tests/markdown/quiz/quizDeterministicChecks.test.ts
index 89fee9b..875fdd9 100644
--- a/nextjs/src/models/local/tests/markdown/quiz/quizDeterministicChecks.test.ts
+++ b/nextjs/src/models/local/tests/markdown/quiz/quizDeterministicChecks.test.ts
@@ -9,8 +9,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       shuffleAnswers: true,
       oneQuestionAtATime: true,
       localAssignmentGroupName: "Assignments",
@@ -29,8 +29,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       showCorrectAnswers: false,
       shuffleAnswers: true,
       oneQuestionAtATime: true,
@@ -49,8 +49,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       shuffleAnswers: true,
       oneQuestionAtATime: true,
       localAssignmentGroupName: "Assignments",
@@ -76,8 +76,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       shuffleAnswers: true,
       oneQuestionAtATime: true,
       localAssignmentGroupName: "Assignments",
@@ -103,8 +103,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       shuffleAnswers: true,
       oneQuestionAtATime: true,
       localAssignmentGroupName: "Assignments",
@@ -133,8 +133,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       shuffleAnswers: true,
       oneQuestionAtATime: true,
       password: undefined,
@@ -164,8 +164,8 @@ describe("QuizDeterministicChecks", () => {
     const quiz: LocalQuiz = {
       name: "Test Quiz",
       description: "quiz description",
-      lockAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
-      dueAt: new Date(2022, 9, 3, 12, 5, 0).toISOString(),
+      lockAt: "21/08/2023 23:59:00",
+      dueAt: "21/08/2023 23:59:00",
       shuffleAnswers: true,
       oneQuestionAtATime: true,
       password: undefined,
diff --git a/nextjs/src/models/local/tests/markdown/quiz/quizMarkdown.test.ts b/nextjs/src/models/local/tests/markdown/quiz/quizMarkdown.test.ts
index 8ed67d3..834bce8 100644
--- a/nextjs/src/models/local/tests/markdown/quiz/quizMarkdown.test.ts
+++ b/nextjs/src/models/local/tests/markdown/quiz/quizMarkdown.test.ts
@@ -41,8 +41,8 @@ this is my description in markdown
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -72,8 +72,8 @@ Name: Test Quiz
 Password: ${password}
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -93,8 +93,8 @@ Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
 ShowCorrectAnswers: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -113,8 +113,8 @@ description
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -153,8 +153,8 @@ b) false
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -185,8 +185,8 @@ b) false
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -213,8 +213,8 @@ short_answer`;
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
@@ -236,8 +236,8 @@ short answer
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the
diff --git a/nextjs/src/models/local/tests/markdown/quiz/testAnswer.test.ts b/nextjs/src/models/local/tests/markdown/quiz/testAnswer.test.ts
index 0c38c76..a97b709 100644
--- a/nextjs/src/models/local/tests/markdown/quiz/testAnswer.test.ts
+++ b/nextjs/src/models/local/tests/markdown/quiz/testAnswer.test.ts
@@ -9,8 +9,8 @@ describe('TextAnswerTests', () => {
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the 
@@ -34,8 +34,8 @@ essay
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the 
@@ -59,8 +59,8 @@ short answer
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the 
@@ -86,8 +86,8 @@ short_answer`;
 Name: Test Quiz
 ShuffleAnswers: true
 OneQuestionAtATime: false
-DueAt: 2023-08-21T23:59:00
-LockAt: 2023-08-21T23:59:00
+DueAt: 21/08/2023 23:59:00
+LockAt: 21/08/2023 23:59:00
 AssignmentGroup: Assignments
 AllowedAttempts: -1
 Description: this is the