diff --git a/09_palindromes/palindromes.spec.js b/09_palindromes/palindromes.spec.js
index 2f239d3..2bd764a 100644
--- a/09_palindromes/palindromes.spec.js
+++ b/09_palindromes/palindromes.spec.js
@@ -19,4 +19,16 @@ describe('palindromes', () => {
   test.skip('doesn\'t just always return true', () => {
     expect(palindromes('ZZZZ car, a man, a maraca.')).toBe(false);
   });
+  test.skip('works with numbers that are palindromes', () => {
+    expect(palindromes('1005001')).toBe(true);
+  });
+  test.skip('works with numbers that are not palindromes', () => {
+    expect(palindromes('12345')).toBe(false);
+  });
+  test.skip('works with datetime stamp using short digits', () => {
+    expect(palindromes('11/11/11 11:11')).toBe(true);
+  });
+  test.skip('works with date stamp using long digits', () => {
+    expect(palindromes('02/02/2020.')).toBe(true);
+  });
 });