diff --git a/test-date-formatting.js b/test-date-formatting.js
new file mode 100644
index 0000000..0a7703d
--- /dev/null
+++ b/test-date-formatting.js
@@ -0,0 +1,56 @@
+// Test script to verify date formatting
+import { formatDate, formatDateForInput } from "./src/lib/utils.js";
+
+console.log("Testing Date Formatting Functions...\n");
+
+// Test cases
+const testDates = [
+	"2024-01-15",
+	"2024-12-25T14:30:00",
+	"2024-06-01",
+	new Date("2024-03-10"),
+	new Date("2024-09-22T09:15:30"),
+	null,
+	undefined,
+	"invalid-date",
+];
+
+console.log("formatDate() tests (DD.MM.YYYY format):");
+testDates.forEach((date, index) => {
+	try {
+		const result = formatDate(date);
+		console.log(`${index + 1}. ${JSON.stringify(date)} -> "${result}"`);
+	} catch (error) {
+		console.log(
+			`${index + 1}. ${JSON.stringify(date)} -> ERROR: ${error.message}`
+		);
+	}
+});
+
+console.log("\nformatDate() with time tests (DD.MM.YYYY HH:MM format):");
+testDates.forEach((date, index) => {
+	try {
+		const result = formatDate(date, { includeTime: true });
+		console.log(`${index + 1}. ${JSON.stringify(date)} -> "${result}"`);
+	} catch (error) {
+		console.log(
+			`${index + 1}. ${JSON.stringify(date)} -> ERROR: ${error.message}`
+		);
+	}
+});
+
+console.log(
+	"\nformatDateForInput() tests (YYYY-MM-DD format for HTML inputs):"
+);
+testDates.forEach((date, index) => {
+	try {
+		const result = formatDateForInput(date);
+		console.log(`${index + 1}. ${JSON.stringify(date)} -> "${result}"`);
+	} catch (error) {
+		console.log(
+			`${index + 1}. ${JSON.stringify(date)} -> ERROR: ${error.message}`
+		);
+	}
+});
+
+console.log("\nDate formatting verification complete!");