diff --git a/core/modules/locale/lib/Drupal/locale/Tests/LocaleLibraryInfoAlterTest.php b/core/modules/locale/lib/Drupal/locale/Tests/LocaleLibraryInfoAlterTest.php
new file mode 100644
index 0000000..7223eab
--- /dev/null
+++ b/core/modules/locale/lib/Drupal/locale/Tests/LocaleLibraryInfoAlterTest.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * @file
+ * Definition of Drupal\locale\Tests\LocaleLibraryInfoAlterTest.
+ */
+
+namespace Drupal\locale\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests localization of the JavaScript libraries.
+ *
+ * Currently, only the jQuery datepicker is localized using Drupal translations.
+ */
+class LocaleLibraryInfoAlterTest extends WebTestBase {
+  public static function getInfo() {
+    return array(
+      'name' => 'Javascript library localisation',
+      'description' => 'Tests localization of the JavaScript libraries.',
+      'group' => 'Locale',
+    );
+  }
+
+  function setUp() {
+    parent::setUp(array('locale', 'locale_test'));
+  }
+
+  /**
+     * Verifies that the datepicker can be localized.
+     *
+     * @see locale_library_info_alter()
+     */
+  public function testLibraryInfoAlter() {
+    drupal_add_library('system', 'ui.datepicker');
+    $scripts = drupal_get_js();
+    $this->assertTrue(strpos($scripts, 'locale.datepicker.js'), t('locale.datepicker.js added to scripts.'));
+  }
+}
diff --git a/core/modules/locale/locale.datepicker.js b/core/modules/locale/locale.datepicker.js
index 024c1e2..0efd20b 100644
--- a/core/modules/locale/locale.datepicker.js
+++ b/core/modules/locale/locale.datepicker.js
@@ -2,70 +2,80 @@
 
 "use strict";
 
-$.datepicker.regional['drupal-locale'] = {
-  closeText: Drupal.t('Done'),
-  prevText: Drupal.t('Prev'),
-  nextText: Drupal.t('Next'),
-  currentText: Drupal.t('Today'),
-  monthNames: [
-    Drupal.t('January'),
-    Drupal.t('February'),
-    Drupal.t('March'),
-    Drupal.t('April'),
-    Drupal.t('May'),
-    Drupal.t('June'),
-    Drupal.t('July'),
-    Drupal.t('August'),
-    Drupal.t('September'),
-    Drupal.t('October'),
-    Drupal.t('November'),
-    Drupal.t('December')
-  ],
-  monthNamesShort: [
-    Drupal.t('Jan'),
-    Drupal.t('Feb'),
-    Drupal.t('Mar'),
-    Drupal.t('Apr'),
-    Drupal.t('May'),
-    Drupal.t('Jun'),
-    Drupal.t('Jul'),
-    Drupal.t('Aug'),
-    Drupal.t('Sep'),
-    Drupal.t('Oct'),
-    Drupal.t('Nov'),
-    Drupal.t('Dec')
-  ],
-  dayNames: [
-    Drupal.t('Sunday'),
-    Drupal.t('Monday'),
-    Drupal.t('Tuesday'),
-    Drupal.t('Wednesday'),
-    Drupal.t('Thursday'),
-    Drupal.t('Friday'),
-    Drupal.t('Saturday')
-  ],
-  dayNamesShort: [
-    Drupal.t('Sun'),
-    Drupal.t('Mon'),
-    Drupal.t('Tue'),
-    Drupal.t('Wed'),
-    Drupal.t('Thu'),
-    Drupal.t('Fri'),
-    Drupal.t('Sat')
-  ],
-  dayNamesMin: [
-    Drupal.t('Su'),
-    Drupal.t('Mo'),
-    Drupal.t('Tu'),
-    Drupal.t('We'),
-    Drupal.t('Th'),
-    Drupal.t('Fr'),
-    Drupal.t('Sa')
-  ],
-  dateFormat: Drupal.t('mm/dd/yy'),
-  firstDay: Drupal.settings.jqueryuidatepicker.firstDay,
-  isRTL: Drupal.settings.jqueryuidatepicker.rtl
+/**
+ * Attaches language support to the jQuery UI datepicker component.
+ */
+Drupal.behaviors.localeDatepicker = {
+  attach: function(context, settings) {
+    // This code accesses Drupal.settings and localized strings via Drupal.t().
+    // So this code should run after these are initialized. By placing it in an
+    // attach behavior this is assured.
+    $.datepicker.regional['drupal-locale'] = $.extend({
+      closeText: Drupal.t('Done'),
+      prevText: Drupal.t('Prev'),
+      nextText: Drupal.t('Next'),
+      currentText: Drupal.t('Today'),
+      monthNames: [
+        Drupal.t('January'),
+        Drupal.t('February'),
+        Drupal.t('March'),
+        Drupal.t('April'),
+        Drupal.t('May'),
+        Drupal.t('June'),
+        Drupal.t('July'),
+        Drupal.t('August'),
+        Drupal.t('September'),
+        Drupal.t('October'),
+        Drupal.t('November'),
+        Drupal.t('December')
+      ],
+      monthNamesShort: [
+        Drupal.t('Jan'),
+        Drupal.t('Feb'),
+        Drupal.t('Mar'),
+        Drupal.t('Apr'),
+        Drupal.t('May'),
+        Drupal.t('Jun'),
+        Drupal.t('Jul'),
+        Drupal.t('Aug'),
+        Drupal.t('Sep'),
+        Drupal.t('Oct'),
+        Drupal.t('Nov'),
+        Drupal.t('Dec')
+      ],
+      dayNames: [
+        Drupal.t('Sunday'),
+        Drupal.t('Monday'),
+        Drupal.t('Tuesday'),
+        Drupal.t('Wednesday'),
+        Drupal.t('Thursday'),
+        Drupal.t('Friday'),
+        Drupal.t('Saturday')
+      ],
+      dayNamesShort: [
+        Drupal.t('Sun'),
+        Drupal.t('Mon'),
+        Drupal.t('Tue'),
+        Drupal.t('Wed'),
+        Drupal.t('Thu'),
+        Drupal.t('Fri'),
+        Drupal.t('Sat')
+      ],
+      dayNamesMin: [
+        Drupal.t('Su'),
+        Drupal.t('Mo'),
+        Drupal.t('Tu'),
+        Drupal.t('We'),
+        Drupal.t('Th'),
+        Drupal.t('Fr'),
+        Drupal.t('Sa')
+      ],
+      dateFormat: Drupal.t('mm/dd/yy'),
+      firstDay: 0,
+      isRTL: 0
+    }, Drupal.settings.jquery.ui.datepicker);
+    $.datepicker.setDefaults($.datepicker.regional['drupal-locale']);
+  }
 };
-$.datepicker.setDefaults($.datepicker.regional['drupal-locale']);
 
 })(jQuery);
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 35f8032..7ce8a2f 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -641,21 +641,28 @@ function locale_js_alter(&$javascript) {
   }
 }
 
- /**
+/**
  * Implement hook_library_info_alter().
  *
  * Provides the language support for the jQuery UI Date Picker.
  */
 function locale_library_info_alter(&$libraries, $module) {
-  global $language_interface;
-  if ($module == 'system' && isset($libraries['system']['ui.datepicker'])) {
+  if ($module == 'system' && isset($libraries['ui.datepicker'])) {
+    global $language_interface;
+    // locale.datepicker.js should be added in the JS_LIBRARY group, so that
+    // this attach behavior will execute early. JS_LIBRARY is the default for
+    // hook_library_info_alter(), thus does not have to be specified explicitly.
     $datepicker = drupal_get_path('module', 'locale') . '/locale.datepicker.js';
-    $libraries['system']['ui.datepicker']['js'][$datepicker] = array('group' => JS_THEME);
-    $libraries['system']['ui.datepicker']['js'][] = array(
+    $libraries['ui.datepicker']['js'][$datepicker] = array();
+    $libraries['ui.datepicker']['js'][] = array(
       'data' => array(
-        'jqueryuidatepicker' => array(
-          'rtl' => $language_interface->direction == LANGUAGE_RTL,
-          'firstDay' => variable_get('date_first_day', 0),
+        'jquery' => array(
+          'ui' => array(
+            'datepicker' => array(
+              'isRTL' => $language_interface->direction == LANGUAGE_RTL,
+              'firstDay' => variable_get('date_first_day', 0),
+            ),
+          ),
         ),
       ),
       'type' => 'setting',
diff --git a/core/modules/node/node.pages.inc b/core/modules/node/node.pages.inc
index a43ff62..fa8b2f2 100644
--- a/core/modules/node/node.pages.inc
+++ b/core/modules/node/node.pages.inc
@@ -293,6 +293,15 @@ function node_form($form, &$form_state, Node $node) {
     '#maxlength' => 25,
     '#description' => t('Format: %time. The date format is YYYY-MM-DD and %timezone is the time zone offset from UTC. Leave blank to use the time of form submission.', array('%time' => !empty($node->date) ? date_format(date_create($node->date), 'Y-m-d H:i:s O') : format_date($node->created, 'custom', 'Y-m-d H:i:s O'), '%timezone' => !empty($node->date) ? date_format(date_create($node->date), 'O') : format_date($node->created, 'custom', 'O'))),
     '#default_value' => !empty($node->date) ? $node->date : '',
+    '#attached' => array(
+      'library' => array(array('system', 'ui.datepicker')),
+      'js' => array(array(
+        'data' => "jQuery(function ($) {
+          $('#edit-date').datepicker();
+        });",
+        'type' => 'inline',
+      ))
+    ),
   );
 
   // Node options for administrators