diff --git a/core/lib/Drupal/Core/Datetime/Plugin/Field/FieldWidget/TimestampDatetimeWidget.php b/core/lib/Drupal/Core/Datetime/Plugin/Field/FieldWidget/TimestampDatetimeWidget.php
index d11cf54..7b147b1 100644
--- a/core/lib/Drupal/Core/Datetime/Plugin/Field/FieldWidget/TimestampDatetimeWidget.php
+++ b/core/lib/Drupal/Core/Datetime/Plugin/Field/FieldWidget/TimestampDatetimeWidget.php
@@ -35,7 +35,7 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
       '#default_value' => $default_value,
       '#date_year_range' => '1902:2037',
     );
-    $element['value']['#description'] = $this->t('Format: %format. Leave blank to use the time of form submission.', array('%format' => Datetime::formatExample($date_format . ' ' . $time_format)));
+    $element['value']['#description'] = $this->t('Format: %format. Leave blank to use the date and time of form submission.', array('%format' => Datetime::formatExample($date_format . ' ' . $time_format)));
 
     return $element;
   }
diff --git a/core/modules/content_translation/src/ContentTranslationHandler.php b/core/modules/content_translation/src/ContentTranslationHandler.php
index 6fd2254..5799305 100644
--- a/core/modules/content_translation/src/ContentTranslationHandler.php
+++ b/core/modules/content_translation/src/ContentTranslationHandler.php
@@ -453,7 +453,7 @@ public function entityFormAlter(array &$form, FormStateInterface $form_state, En
         '#type' => 'textfield',
         '#title' => t('Authored on'),
         '#maxlength' => 25,
-        '#description' => t('Format: %time. The date format is YYYY-MM-DD and %timezone is the time zone offset from UTC. Leave blank to use the time of form submission.', array('%time' => format_date(REQUEST_TIME, 'custom', 'Y-m-d H:i:s O'), '%timezone' => format_date(REQUEST_TIME, 'custom', 'O'))),
+        '#description' => t('Format: %time. The date format is YYYY-MM-DD and %timezone is the time zone offset from UTC. Leave blank to use the date and time of form submission.', array('%time' => format_date(REQUEST_TIME, 'custom', 'Y-m-d H:i:s O'), '%timezone' => format_date(REQUEST_TIME, 'custom', 'O'))),
         '#default_value' => $new_translation || !$date ? '' : format_date($date, 'custom', 'Y-m-d H:i:s O'),
       );