diff --git a/scheduler.module b/scheduler.module
index a0b58a0..c67a267 100644
--- a/scheduler.module
+++ b/scheduler.module
@@ -308,6 +308,7 @@ function scheduler_node_view(array &$build, EntityInterface $node, EntityViewDis
 function scheduler_node_presave(EntityInterface $node) {
   $config = \Drupal::config('scheduler.settings');
   $entity = $node->type->entity;
+  $request_time = \Drupal::time()->getRequestTime();
 
   // If there is no entity object or the class is incorrect then stop here. This
   // should not really happen but it has been observed, so better to be safe.
@@ -337,14 +338,14 @@ function scheduler_node_presave(EntityInterface $node) {
       if (rand(1, 100) <= $publishing_percent) {
         // Randomly assign a publish_on value in the range starting with the
         // created date and up to the selected time range in the future.
-        $node->set('publish_on', rand($node->created->value + 1, \Drupal::time()->getRequestTime() + $time_range));
+        $node->set('publish_on', rand($node->created->value + 1, $request_time + $time_range));
       }
     }
     if ($unpublishing_percent && in_array($node->getType(), $unpublishing_enabled_types)) {
       if (rand(1, 100) <= $unpublishing_percent) {
         // Randomly assign an unpublish_on value in the range from the later of
         // created date/publish_on date up to the time range in the future.
-        $node->set('unpublish_on', rand(max($node->created->value, $node->publish_on->value), \Drupal::time()->getRequestTime() + $time_range));
+        $node->set('unpublish_on', rand(max($node->created->value, $node->publish_on->value), $request_time + $time_range));
       }
     }
   }
@@ -359,7 +360,7 @@ function scheduler_node_presave(EntityInterface $node) {
     // Publish the node immediately if the publication date is in the past.
     $publish_immediately = $entity->getThirdPartySetting('scheduler', 'publish_past_date', $config->get('default_publish_past_date')) == 'publish';
 
-    if ($publication_allowed && $publish_immediately && $node->publish_on->value <= \Drupal::time()->getRequestTime()) {
+    if ($publication_allowed && $publish_immediately && $node->publish_on->value <= $request_time) {
       // Trigger the PRE_PUBLISH_INMEDIATELY event so that modules can react
       // before the node has been published.
       $event = new SchedulerEvent($node);
diff --git a/tests/src/Functional/SchedulerApiTest.php b/tests/src/Functional/SchedulerApiTest.php
index bf11473..1840122 100644
--- a/tests/src/Functional/SchedulerApiTest.php
+++ b/tests/src/Functional/SchedulerApiTest.php
@@ -253,10 +253,9 @@ class SchedulerApiTest extends SchedulerBrowserTestBase {
     $node->set('sticky', FALSE)->set('promote', FALSE)->save();
 
     // Edit the node and set a publish-on date in the past.
-    $request_time = $this->time->getRequestTime();
     $edit = [
-      'publish_on[0][value][date]' => date('Y-m-d', strtotime('-2 day', $request_time)),
-      'publish_on[0][value][time]' => date('H:i:s', strtotime('-2 day', $request_time)),
+      'publish_on[0][value][date]' => date('Y-m-d', strtotime('-2 day', $this->requestTime)),
+      'publish_on[0][value][time]' => date('H:i:s', strtotime('-2 day', $this->requestTime)),
     ];
     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
     // Verify that the values have been altered as expected.
diff --git a/tests/src/Functional/SchedulerBasicTest.php b/tests/src/Functional/SchedulerBasicTest.php
index 0b6b6d4..ab18b51 100644
--- a/tests/src/Functional/SchedulerBasicTest.php
+++ b/tests/src/Functional/SchedulerBasicTest.php
@@ -63,7 +63,7 @@ class SchedulerBasicTest extends SchedulerBrowserTestBase {
     }
 
     // Modify the scheduler field data to a time in the past, then run cron.
-    $node->$key = $this->time->getRequestTime() - 1;
+    $node->$key = $this->requestTime - 1;
     $node->save();
     $this->cronRun();
 
diff --git a/tests/src/Functional/SchedulerBrowserTestBase.php b/tests/src/Functional/SchedulerBrowserTestBase.php
index e4b361b..91431fd 100644
--- a/tests/src/Functional/SchedulerBrowserTestBase.php
+++ b/tests/src/Functional/SchedulerBrowserTestBase.php
@@ -75,11 +75,11 @@ abstract class SchedulerBrowserTestBase extends BrowserTestBase {
   protected $database;
 
   /**
-   * The time service.
+   * The request time stored as interger for direct re-use in many tests.
    *
-   * @var \Drupal\Component\Datetime\TimeInterface
+   * @var int
    */
-  protected $time;
+  protected $requestTime;
 
   /**
    * {@inheritdoc}
@@ -141,7 +141,8 @@ abstract class SchedulerBrowserTestBase extends BrowserTestBase {
     // Store the database connection for re-use in the actual tests.
     $this->database = $this->container->get('database');
 
-    $this->time = $this->container->get('datetime.time');
+    // Determine the request time and save for re-use in the actual tests.
+    $this->requestTime = $this->container->get('datetime.time')->getRequestTime();
   }
 
   /**
diff --git a/tests/src/Functional/SchedulerDefaultTimeTest.php b/tests/src/Functional/SchedulerDefaultTimeTest.php
index 5719fbe..22af451 100644
--- a/tests/src/Functional/SchedulerDefaultTimeTest.php
+++ b/tests/src/Functional/SchedulerDefaultTimeTest.php
@@ -37,12 +37,12 @@ class SchedulerDefaultTimeTest extends SchedulerBrowserTestBase {
 
     // First test with the "date only" functionality disabled.
     $config->set('allow_date_only', FALSE)->save();
-    $request_time = $this->time->getRequestTime();
+
     // Test that entering a time is required.
     $edit = [
       'title[0][value]' => 'No time ' . $this->randomString(15),
-      'publish_on[0][value][date]' => $date_formatter->format(strtotime('+1 day', $request_time), 'custom', 'Y-m-d'),
-      'unpublish_on[0][value][date]' => $date_formatter->format(strtotime('+2 day', $request_time), 'custom', 'Y-m-d'),
+      'publish_on[0][value][date]' => $date_formatter->format(strtotime('+1 day', $this->requestTime), 'custom', 'Y-m-d'),
+      'unpublish_on[0][value][date]' => $date_formatter->format(strtotime('+2 day', $this->requestTime), 'custom', 'Y-m-d'),
     ];
     // Create a node and check that the expected error messages are shown.
     $this->drupalPostForm('node/add/' . $this->type, $edit, t('Save'));
@@ -58,8 +58,8 @@ class SchedulerDefaultTimeTest extends SchedulerBrowserTestBase {
     $this->assertSession()->pageTextNotContains($unpublish_validation_message, 'If the default time option is enabled the user can skip the time when scheduling content for unpublication.');
 
     // Check that the scheduled information is shown after saving.
-    $publish_time = strtotime('+1 day midnight', $request_time) + $seconds;
-    $unpublish_time = strtotime('+2 day midnight', $request_time) + $seconds;
+    $publish_time = strtotime('+1 day midnight', $this->requestTime) + $seconds;
+    $unpublish_time = strtotime('+2 day midnight', $this->requestTime) + $seconds;
     $this->assertText(sprintf('This post is unpublished and will be published %s', $date_formatter->format($publish_time, 'long')), 'The user is informed that the content will be published on the requested date, on the default time.');
 
     // Protect in case the node was not created.
diff --git a/tests/src/Functional/SchedulerDevelGenerateTest.php b/tests/src/Functional/SchedulerDevelGenerateTest.php
index 04d474c..4af7852 100644
--- a/tests/src/Functional/SchedulerDevelGenerateTest.php
+++ b/tests/src/Functional/SchedulerDevelGenerateTest.php
@@ -82,8 +82,7 @@ class SchedulerDevelGenerateTest extends SchedulerBrowserTestBase {
       // slowly creep forward during sucessive calls. Tests can fail incorrectly
       // for this reason, hence the best approximation is to use time() when
       // calculating the upper end of the range.
-      $request_time = $this->time->getRequestTime();
-      $min = $request_time - $time_range;
+      $min = $this->requestTime - $time_range;
       $max = time() + $time_range;
 
       $query = $this->nodeStorage->getAggregateQuery();
diff --git a/tests/src/Functional/SchedulerMultilingualTest.php b/tests/src/Functional/SchedulerMultilingualTest.php
index 1b67417..99e3777 100644
--- a/tests/src/Functional/SchedulerMultilingualTest.php
+++ b/tests/src/Functional/SchedulerMultilingualTest.php
@@ -158,11 +158,10 @@ class SchedulerMultilingualTest extends SchedulerBrowserTestBase {
 
     // Create the second translation, to be published in the future.
     $this->drupalGet('node/' . $node->id() . '/translations/add/' . $this->languages[0]['code'] . '/' . $this->languages[2]['code']);
-    $request_time = $this->time->getRequestTime();
     $edit = [
       'title[0][value]' => $this->languages[2]['name'] . '(2) - Publish in the future',
-      'publish_on[0][value][date]' => date('Y-m-d', strtotime('+2 day', $request_time)),
-      'publish_on[0][value][time]' => date('H:i:s', strtotime('+2 day', $request_time)),
+      'publish_on[0][value][date]' => date('Y-m-d', strtotime('+2 day', $this->requestTime)),
+      'publish_on[0][value][time]' => date('H:i:s', strtotime('+2 day', $this->requestTime)),
     ];
     $this->submitForm($edit, $save_button_text);
 
@@ -170,8 +169,8 @@ class SchedulerMultilingualTest extends SchedulerBrowserTestBase {
     $this->drupalGet('node/' . $node->id() . '/translations/add/' . $this->languages[0]['code'] . '/' . $this->languages[3]['code']);
     $edit = [
       'title[0][value]' => $this->languages[3]['name'] . '(3) - Publish in the past',
-      'publish_on[0][value][date]' => date('Y-m-d', strtotime('-2 day', $request_time)),
-      'publish_on[0][value][time]' => date('H:i:s', strtotime('-2 day', $request_time)),
+      'publish_on[0][value][date]' => date('Y-m-d', strtotime('-2 day', $this->requestTime)),
+      'publish_on[0][value][time]' => date('H:i:s', strtotime('-2 day', $this->requestTime)),
     ];
     $this->submitForm($edit, $save_button_text);
 
diff --git a/tests/src/Functional/SchedulerNodeAccessTest.php b/tests/src/Functional/SchedulerNodeAccessTest.php
index 2ac79da..f9a56f5 100644
--- a/tests/src/Functional/SchedulerNodeAccessTest.php
+++ b/tests/src/Functional/SchedulerNodeAccessTest.php
@@ -57,7 +57,7 @@ class SchedulerNodeAccessTest extends SchedulerBrowserTestBase {
         'type' => $this->type,
         'status' => $data['status'],
         'title' => 'Test node to be ' . $data['after'],
-        $field => $this->time->getRequestTime() + 1,
+        $field => $this->requestTime + 1,
       ];
       $node = $this->drupalCreateNode($settings);
       $this->drupalGet('node/' . $node->id());
diff --git a/tests/src/Functional/SchedulerNonEnabledTypeTest.php b/tests/src/Functional/SchedulerNonEnabledTypeTest.php
index 02770a6..d4988fa 100644
--- a/tests/src/Functional/SchedulerNonEnabledTypeTest.php
+++ b/tests/src/Functional/SchedulerNonEnabledTypeTest.php
@@ -74,12 +74,11 @@ class SchedulerNonEnabledTypeTest extends SchedulerBrowserTestBase {
     // could be done by a third-party module, or a by-product of the node type
     // being enabled for publishing then being disabled before it got published.
     $title = $info . ' (' . $run_number . 'b)';
-    $request_time = $this->time->getRequestTime();
     $edit = [
       'title' => $title,
       'status' => 0,
       'type' => $this->contentName,
-      'publish_on' => $request_time - 2,
+      'publish_on' => $this->requestTime - 2,
     ];
     $node = $this->drupalCreateNode($edit);
 
@@ -106,7 +105,7 @@ class SchedulerNonEnabledTypeTest extends SchedulerBrowserTestBase {
       'title' => $title,
       'status' => 1,
       'type' => $this->contentName,
-      'unpublish_on' => $request_time - 1,
+      'unpublish_on' => $this->requestTime - 1,
     ];
     $node = $this->drupalCreateNode($edit);
 
diff --git a/tests/src/Functional/SchedulerPastDatesTest.php b/tests/src/Functional/SchedulerPastDatesTest.php
index 2a7ceab..239513f 100644
--- a/tests/src/Functional/SchedulerPastDatesTest.php
+++ b/tests/src/Functional/SchedulerPastDatesTest.php
@@ -24,13 +24,13 @@ class SchedulerPastDatesTest extends SchedulerBrowserTestBase {
 
     // Create an unpublished page node.
     $node = $this->drupalCreateNode(['type' => $this->type, 'status' => FALSE]);
-    $request_time = $this->time->getRequestTime();
+
     // Test the default behavior: an error message should be shown when the user
     // enters a publication date that is in the past.
     $edit = [
       'title[0][value]' => 'Past ' . $this->randomString(10),
-      'publish_on[0][value][date]' => \Drupal::service('date.formatter')->format(strtotime('-1 day', $request_time), 'custom', 'Y-m-d'),
-      'publish_on[0][value][time]' => \Drupal::service('date.formatter')->format(strtotime('-1 day', $request_time), 'custom', 'H:i:s'),
+      'publish_on[0][value][date]' => \Drupal::service('date.formatter')->format(strtotime('-1 day', $this->requestTime), 'custom', 'Y-m-d'),
+      'publish_on[0][value][time]' => \Drupal::service('date.formatter')->format(strtotime('-1 day', $this->requestTime), 'custom', 'H:i:s'),
     ];
     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
     $this->assertText("The 'publish on' date must be in the future", 'An error message is shown by default when the publication date is in the past.');
@@ -66,7 +66,7 @@ class SchedulerPastDatesTest extends SchedulerBrowserTestBase {
     $this->nodeStorage->resetCache([$node->id()]);
     $node = $this->nodeStorage->load($node->id());
     $this->assertFalse($node->isPublished(), 'The node has been unpublished when the publication date is in the past and the "schedule" behavior is chosen.');
-    $this->assertEqual($node->publish_on->value, strtotime('-1 day', $request_time), 'The node has the correct publish_on date stored.');
+    $this->assertEqual($node->publish_on->value, strtotime('-1 day', $this->requestTime), 'The node has the correct publish_on date stored.');
 
     // Simulate a cron run and check that the node is published.
     scheduler_cron();
@@ -77,8 +77,8 @@ class SchedulerPastDatesTest extends SchedulerBrowserTestBase {
     // Check that an Unpublish date in the past fails validation.
     $edit = [
       'title[0][value]' => 'Unpublish in the past ' . $this->randomString(10),
-      'unpublish_on[0][value][date]' => \Drupal::service('date.formatter')->format($request_time - 3600, 'custom', 'Y-m-d'),
-      'unpublish_on[0][value][time]' => \Drupal::service('date.formatter')->format($request_time - 3600, 'custom', 'H:i:s'),
+      'unpublish_on[0][value][date]' => \Drupal::service('date.formatter')->format($this->requestTime - 3600, 'custom', 'Y-m-d'),
+      'unpublish_on[0][value][time]' => \Drupal::service('date.formatter')->format($this->requestTime - 3600, 'custom', 'H:i:s'),
     ];
     $this->drupalPostForm('node/add/' . $this->type, $edit, t('Save'));
     $this->assertText("The 'unpublish on' date must be in the future", 'An error message is shown when the unpublish date is in the past.');
diff --git a/tests/src/Functional/SchedulerRevisioningTest.php b/tests/src/Functional/SchedulerRevisioningTest.php
index 097e1ba..1c3b000 100644
--- a/tests/src/Functional/SchedulerRevisioningTest.php
+++ b/tests/src/Functional/SchedulerRevisioningTest.php
@@ -26,7 +26,7 @@ class SchedulerRevisioningTest extends SchedulerBrowserTestBase {
   protected function schedule(NodeInterface $node, $action = 'publish') {
     // Simulate scheduling by setting the (un)publication date in the past and
     // running cron.
-    $node->{$action . '_on'} = strtotime('-1 day', $this->time->getRequestTime());
+    $node->{$action . '_on'} = strtotime('-1 day', $this->requestTime);
     $node->save();
     scheduler_cron();
     $this->nodeStorage->resetCache([$node->id()]);
@@ -91,7 +91,7 @@ class SchedulerRevisioningTest extends SchedulerBrowserTestBase {
    */
   public function testRevisioning() {
     // Create a scheduled node that is not automatically revisioned.
-    $created = strtotime('-2 day', $this->time->getRequestTime());
+    $created = strtotime('-2 day', $this->requestTime);
     $settings = [
       'type' => $this->type,
       'revision' => 0,
@@ -119,7 +119,7 @@ class SchedulerRevisioningTest extends SchedulerBrowserTestBase {
     $node = $this->schedule($node);
     $this->assertRevisionCount($node->id(), 2, 'A new revision was created when revisioning is enabled.');
     $expected_message = sprintf('Node published by Scheduler on %s. Previous creation date was %s.',
-      \Drupal::service('date.formatter')->format($this->time->getRequestTime(), 'short'),
+      \Drupal::service('date.formatter')->format($this->requestTime, 'short'),
       \Drupal::service('date.formatter')->format($created, 'short'));
     $this->assertRevisionLogMessage($node->id(), $expected_message, 'The correct message was found in the node revision log after scheduled publishing.');
 
@@ -127,8 +127,8 @@ class SchedulerRevisioningTest extends SchedulerBrowserTestBase {
     $node = $this->schedule($node, 'unpublish');
     $this->assertRevisionCount($node->id(), 3, 'A new revision was created when a node was unpublished with revisioning enabled.');
     $expected_message = sprintf('Node unpublished by Scheduler on %s. Previous change date was %s.',
-      \Drupal::service('date.formatter')->format($this->time->getRequestTime(), 'short'),
-      \Drupal::service('date.formatter')->format($this->time->getRequestTime(), 'short'));
+      \Drupal::service('date.formatter')->format($this->requestTime, 'short'),
+      \Drupal::service('date.formatter')->format($this->requestTime, 'short'));
     $this->assertRevisionLogMessage($node->id(), $expected_message, 'The correct message was found in the node revision log after scheduled unpublishing.');
   }
 
@@ -140,7 +140,7 @@ class SchedulerRevisioningTest extends SchedulerBrowserTestBase {
     $this->nodetype->setThirdPartySetting('scheduler', 'publish_past_date', 'schedule')->save();
 
     // Create a node with a 'created' date two days in the past.
-    $created = strtotime('-2 day', $this->time->getRequestTime());
+    $created = strtotime('-2 day', $this->requestTime);
     $settings = [
       'type' => $this->type,
       'created' => $created,
@@ -164,7 +164,7 @@ class SchedulerRevisioningTest extends SchedulerBrowserTestBase {
     $node = $this->schedule($node, 'publish');
     // Check that the created date has changed to match the publish_on date.
     $created_after_cron = $node->created->value;
-    $this->assertEqual(strtotime('-1 day', $this->time->getRequestTime()), $created_after_cron, "With 'touch' option set, the node creation date is changed to match the publishing date.");
+    $this->assertEqual(strtotime('-1 day', $this->requestTime), $created_after_cron, "With 'touch' option set, the node creation date is changed to match the publishing date.");
   }
 
 }
diff --git a/tests/src/Functional/SchedulerRulesActionsTest.php b/tests/src/Functional/SchedulerRulesActionsTest.php
index 846ea10..9a3beb0 100644
--- a/tests/src/Functional/SchedulerRulesActionsTest.php
+++ b/tests/src/Functional/SchedulerRulesActionsTest.php
@@ -60,7 +60,7 @@ class SchedulerRulesActionsTest extends SchedulerBrowserTestBase {
     $rule1->addAction('scheduler_set_publishing_date_action',
       ContextConfig::create()
         ->map('node', 'node')
-        ->setValue('date', $this->time->getRequestTime() + 1800)
+        ->setValue('date', $this->requestTime + 1800)
       )
       ->addAction('rules_system_message',
         ContextConfig::create()
@@ -182,7 +182,7 @@ class SchedulerRulesActionsTest extends SchedulerBrowserTestBase {
     $rule3->addAction('scheduler_set_unpublishing_date_action',
       ContextConfig::create()
         ->map('node', 'node')
-        ->setValue('date', $this->time->getRequestTime() + 1800)
+        ->setValue('date', $this->requestTime + 1800)
       )
       ->addAction('rules_system_message',
         ContextConfig::create()
diff --git a/tests/src/Functional/SchedulerRulesConditionsTest.php b/tests/src/Functional/SchedulerRulesConditionsTest.php
index 04bbbc7..23a85b5 100644
--- a/tests/src/Functional/SchedulerRulesConditionsTest.php
+++ b/tests/src/Functional/SchedulerRulesConditionsTest.php
@@ -236,10 +236,9 @@ class SchedulerRulesConditionsTest extends SchedulerBrowserTestBase {
     $this->assertNoText($message8, '"' . $message8 . '" is not shown');
 
     // Edit the node and set a publish_on date.
-    $request_time = $this->time->getRequestTime();
     $edit = [
-      'publish_on[0][value][date]' => date('Y-m-d', strtotime('+1 day', $request_time)),
-      'publish_on[0][value][time]' => date('H:i:s', strtotime('+1 day', $request_time)),
+      'publish_on[0][value][date]' => date('Y-m-d', strtotime('+1 day', $this->requestTime)),
+      'publish_on[0][value][time]' => date('H:i:s', strtotime('+1 day', $this->requestTime)),
     ];
     $this->drupalPostForm('node/' . $this->node->id() . '/edit', $edit, t('Save'));
 
@@ -250,8 +249,8 @@ class SchedulerRulesConditionsTest extends SchedulerBrowserTestBase {
 
     // Edit the node and set an unpublish_on date.
     $edit = [
-      'unpublish_on[0][value][date]' => date('Y-m-d', strtotime('+2 day', $request_time)),
-      'unpublish_on[0][value][time]' => date('H:i:s', strtotime('+2 day', $request_time)),
+      'unpublish_on[0][value][date]' => date('Y-m-d', strtotime('+2 day', $this->requestTime)),
+      'unpublish_on[0][value][time]' => date('H:i:s', strtotime('+2 day', $this->requestTime)),
     ];
     $this->drupalPostForm('node/' . $this->node->id() . '/edit', $edit, t('Save'));
 
diff --git a/tests/src/Functional/SchedulerTokenReplaceTest.php b/tests/src/Functional/SchedulerTokenReplaceTest.php
index 2a263a0..e1576cc 100644
--- a/tests/src/Functional/SchedulerTokenReplaceTest.php
+++ b/tests/src/Functional/SchedulerTokenReplaceTest.php
@@ -15,10 +15,9 @@ class SchedulerTokenReplaceTest extends SchedulerBrowserTestBase {
   public function testSchedulerTokenReplacement() {
     $this->drupalLogin($this->schedulerUser);
     $date_formatter = \Drupal::service('date.formatter');
-    $request_time = $this->time->getRequestTime();
     // Define timestamps for consistent use when repeated throughout this test.
-    $publish_on_timestamp = $request_time + 3600;
-    $unpublish_on_timestamp = $request_time + 7200;
+    $publish_on_timestamp = $this->requestTime + 3600;
+    $unpublish_on_timestamp = $this->requestTime + 7200;
 
     // Create an unpublished page with scheduled dates.
     $node = $this->drupalCreateNode([
diff --git a/tests/src/Functional/SchedulerValidationTest.php b/tests/src/Functional/SchedulerValidationTest.php
index e8eacca..9b9d3c8 100644
--- a/tests/src/Functional/SchedulerValidationTest.php
+++ b/tests/src/Functional/SchedulerValidationTest.php
@@ -27,10 +27,9 @@ class SchedulerValidationTest extends SchedulerBrowserTestBase {
       'type' => $this->type,
       'status' => FALSE,
     ]);
-    $request_time = $this->time->getRequestTime();
     $edit = [
-      'publish_on[0][value][date]' => date('Y-m-d', strtotime('+1 day', $request_time)),
-      'publish_on[0][value][time]' => date('H:i:s', strtotime('+1 day', $request_time)),
+      'publish_on[0][value][date]' => date('Y-m-d', strtotime('+1 day', $this->requestTime)),
+      'publish_on[0][value][time]' => date('H:i:s', strtotime('+1 day', $this->requestTime)),
     ];
     $this->drupalGet('node/' . $node->id() . '/edit');
 
@@ -67,12 +66,11 @@ class SchedulerValidationTest extends SchedulerBrowserTestBase {
       'type' => $this->type,
       'status' => FALSE,
     ]);
-    $request_time = $this->time->getRequestTime();
     $edit = [
-      'publish_on[0][value][date]' => \Drupal::service('date.formatter')->format($request_time + 8100, 'custom', 'Y-m-d'),
-      'publish_on[0][value][time]' => \Drupal::service('date.formatter')->format($request_time + 8100, 'custom', 'H:i:s'),
-      'unpublish_on[0][value][date]' => \Drupal::service('date.formatter')->format($request_time + 1800, 'custom', 'Y-m-d'),
-      'unpublish_on[0][value][time]' => \Drupal::service('date.formatter')->format($request_time + 1800, 'custom', 'H:i:s'),
+      'publish_on[0][value][date]' => \Drupal::service('date.formatter')->format($this->requestTime + 8100, 'custom', 'Y-m-d'),
+      'publish_on[0][value][time]' => \Drupal::service('date.formatter')->format($this->requestTime + 8100, 'custom', 'H:i:s'),
+      'unpublish_on[0][value][date]' => \Drupal::service('date.formatter')->format($this->requestTime + 1800, 'custom', 'Y-m-d'),
+      'unpublish_on[0][value][time]' => \Drupal::service('date.formatter')->format($this->requestTime + 1800, 'custom', 'H:i:s'),
     ];
     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, $checkbox ? 'Save' : 'Save and keep unpublished');
     $this->assertText("The 'unpublish on' date must be later than the 'publish on' date.", 'Validation prevents entering an unpublish-on date which is earlier than the publish-on date.');