diff --git a/core/modules/datetime/config/schema/datetime.schema.yml b/core/modules/datetime/config/schema/datetime.schema.yml
index 406a2fd..4fe710d 100644
--- a/core/modules/datetime/config/schema/datetime.schema.yml
+++ b/core/modules/datetime/config/schema/datetime.schema.yml
@@ -7,6 +7,9 @@ field.storage_settings.datetime:
     datetime_type:
       type: string
       label: 'Date type'
+    enddate_get:
+      type: string
+      label: 'Collect end date'
 
 field.field_settings.datetime:
   type: mapping
diff --git a/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeItem.php b/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeItem.php
index a7dd1c3..9a43e13 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeItem.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldType/DateTimeItem.php
@@ -33,6 +33,7 @@ class DateTimeItem extends FieldItemBase {
   public static function defaultStorageSettings() {
     return array(
       'datetime_type' => 'datetime',
+      'enddate_get' => FALSE,
     ) + parent::defaultStorageSettings();
   }
 
@@ -51,16 +52,29 @@ public static function defaultStorageSettings() {
    */
   public static function propertyDefinitions(FieldStorageDefinitionInterface $field_definition) {
     $properties['value'] = DataDefinition::create('datetime_iso8601')
-      ->setLabel(t('Date value'))
+      ->setLabel(t('Date value (start)'))
       ->setRequired(TRUE);
 
     $properties['date'] = DataDefinition::create('any')
-      ->setLabel(t('Computed date'))
-      ->setDescription(t('The computed DateTime object.'))
+      ->setLabel(t('Computed date (start)'))
+      ->setDescription(t('The computed start DateTime object.'))
       ->setComputed(TRUE)
       ->setClass('\Drupal\datetime\DateTimeComputed')
       ->setSetting('date source', 'value');
 
+    // TODO a check here fatals.
+    //if ($field_definition->getSetting('enddate_get')) {
+      $properties['value2'] = DataDefinition::create('datetime_iso8601')
+        ->setLabel(t('Date value (end)'));
+
+      $properties['date2'] = DataDefinition::create('any')
+        ->setLabel(t('Computed date (end)'))
+        ->setDescription(t('The computed end DateTime object.'))
+        ->setComputed(TRUE)
+        ->setClass('\Drupal\datetime\DateTimeComputed')
+        ->setSetting('date source', 'value2');
+    //}
+
     return $properties;
   }
 
@@ -68,18 +82,26 @@ public static function propertyDefinitions(FieldStorageDefinitionInterface $fiel
    * {@inheritdoc}
    */
   public static function schema(FieldStorageDefinitionInterface $field_definition) {
-    return array(
+    $schema = array(
       'columns' => array(
         'value' => array(
-          'description' => 'The date value.',
+          'description' => 'The start date value.',
+          'type' => 'varchar',
+          'length' => 20,
+        ),
+        'value2' => array(
+          'description' => 'The start date value.',
           'type' => 'varchar',
           'length' => 20,
         ),
       ),
       'indexes' => array(
         'value' => array('value'),
+        'value2' => array('value2'),
       ),
     );
+
+    return $schema;
   }
 
   /**
@@ -99,6 +121,13 @@ public function storageSettingsForm(array &$form, FormStateInterface $form_state
       ),
     );
 
+    $element['enddate_get'] = array(
+      '#type' => 'checkbox',
+      '#title' => t('Collect an end date'),
+      '#default_value' => $this->getSetting('enddate_get'),
+      '#disabled' => $has_data,
+    );
+
     return $element;
   }
 
@@ -107,15 +136,22 @@ public function storageSettingsForm(array &$form, FormStateInterface $form_state
    */
   public static function generateSampleValue(FieldDefinitionInterface $field_definition) {
     $type = $field_definition->getSetting('datetime_type');
+    $collect_end_date = $field_definition->getSetting('enddate_get');
 
     // Just pick a date in the past year. No guidance is provided by this Field
     // type.
     $timestamp = REQUEST_TIME - mt_rand(0, 86400*365);
     if ($type == DateTimeItem::DATETIME_TYPE_DATE) {
       $values['value'] = gmdate(DATETIME_DATE_STORAGE_FORMAT, $timestamp);
+      if ($collect_end_date) {
+        $values['value2'] = gmdate(DATETIME_DATE_STORAGE_FORMAT, $timestamp);
+      }
     }
     else {
       $values['value'] = gmdate(DATETIME_DATETIME_STORAGE_FORMAT, $timestamp);
+      if ($collect_end_date) {
+        $values['value2'] = gmdate(DATETIME_DATETIME_STORAGE_FORMAT, $timestamp);
+      }
     }
     return $values;
   }
@@ -136,6 +172,9 @@ public function onChange($property_name, $notify = TRUE) {
     if ($property_name == 'value') {
       $this->date = NULL;
     }
+    if ($property_name == 'value2') {
+      $this->date2 = NULL;
+    }
     parent::onChange($property_name, $notify);
   }
 
diff --git a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeWidgetBase.php b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeWidgetBase.php
index dfe750e..1f902b7 100644
--- a/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeWidgetBase.php
+++ b/core/modules/datetime/src/Plugin/Field/FieldWidget/DateTimeWidgetBase.php
@@ -52,6 +52,33 @@ public function formElement(FieldItemListInterface $items, $delta, array $elemen
       $element['value']['#default_value'] = $date;
     }
 
+    if ($this->getFieldSetting('enddate_get')) {
+
+      $element['value']['#title'] = t('Start date');
+
+      $element['value2'] = array(
+        '#title' => t('End date'),
+        '#type' => 'datetime',
+        '#default_value' => NULL,
+        '#date_increment' => 1,
+        '#date_timezone' => drupal_get_user_timezone(),
+        '#required' => $element['#required'],
+      );
+
+      if ($items[$delta]->date2) {
+        $date = $items[$delta]->date2;
+        // The date was created and verified during field_load(), so it is safe to
+        // use without further inspection.
+        if ($this->getFieldSetting('datetime_type') == DateTimeItem::DATETIME_TYPE_DATE) {
+          // A date without time will pick up the current time, use the default
+          // time.
+          datetime_date_default_time($date);
+        }
+        $date->setTimezone(new \DateTimeZone($element['value2']['#date_timezone']));
+        $element['value2']['#default_value'] = $date;
+      }
+    }
+
     return $element;
   }
 
@@ -62,27 +89,37 @@ public function massageFormValues(array $values, array $form, FormStateInterface
     // The widget form element type has transformed the value to a
     // DrupalDateTime object at this point. We need to convert it back to the
     // storage timezone and format.
+    $properties = array('value');
+    if ($this->getFieldSetting('enddate_get')) {
+      $properties[] = 'value2';
+    }
     foreach ($values as &$item) {
-      if (!empty($item['value']) && $item['value'] instanceof DrupalDateTime) {
-        $date = $item['value'];
-        switch ($this->getFieldSetting('datetime_type')) {
-          case DateTimeItem::DATETIME_TYPE_DATE:
-            // If this is a date-only field, set it to the default time so the
-            // timezone conversion can be reversed.
-            datetime_date_default_time($date);
-            $format = DATETIME_DATE_STORAGE_FORMAT;
-            break;
-
-          default:
-            $format = DATETIME_DATETIME_STORAGE_FORMAT;
-            break;
+      foreach ($properties as $property) {
+        if (!empty($item[$property]) && $item[$property] instanceof DrupalDateTime) {
+          $this->massageDateProperty($item, $property);
         }
-        // Adjust the date for storage.
-        $date->setTimezone(new \DateTimezone(DATETIME_STORAGE_TIMEZONE));
-        $item['value'] = $date->format($format);
       }
     }
     return $values;
   }
 
+  public function massageDateProperty(&$item, $property) {
+    $date = $item[$property];
+    switch ($this->getFieldSetting('datetime_type')) {
+      case DateTimeItem::DATETIME_TYPE_DATE:
+        // If this is a date-only field, set it to the default time so the
+        // timezone conversion can be reversed.
+        datetime_date_default_time($date);
+        $format = DATETIME_DATE_STORAGE_FORMAT;
+        break;
+
+      default:
+        $format = DATETIME_DATETIME_STORAGE_FORMAT;
+        break;
+    }
+    // Adjust the date for storage.
+    $date->setTimezone(new \DateTimezone(DATETIME_STORAGE_TIMEZONE));
+    $item[$property] = $date->format($format);
+
+  }
 }
diff --git a/core/modules/datetime/src/Tests/DateTimeItemTest.php b/core/modules/datetime/src/Tests/DateTimeItemTest.php
index d83d2a2..6394cae 100644
--- a/core/modules/datetime/src/Tests/DateTimeItemTest.php
+++ b/core/modules/datetime/src/Tests/DateTimeItemTest.php
@@ -9,6 +9,8 @@
 
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\FieldItemInterface;
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\field\Tests\FieldUnitTestBase;
 
 /**
@@ -122,4 +124,25 @@ public function testSetValueProperty() {
     $this->assertEqual($entity->field_datetime[0]->value, $value, '"Value" property can be set directly.');
   }
 
+  /**
+   * Tests collecting an end date.
+   */
+  public function testEnddate() {
+    /** @var \Drupal\field\FieldStorageConfigInterface $field_storage */
+    $field_storage = FieldStorageConfig::load('entity_test.field_datetime');
+    $field_storage->setSetting('enddate_get', TRUE);
+    $field_storage->save();
+
+    $entity = EntityTest::create();
+    $value = '2014-01-01T20:00:00Z';
+    $value2 = '2014-02-01T20:00:00Z';
+
+    $entity->set('field_datetime', ['value' => $value, 'value2' => $value2]);
+    $entity->save();
+
+    // Load the entity.
+    $id = $entity->id();
+    $entity = EntityTest::load($id);
+    $this->assertEqual($value2, $entity->field_datetime[0]->value2, '"end date" property can be set.');
+  }
 }