Create a node programmatically in Drupal 8

Here an example for create node programmatically in Drupal 8

Node type : article

$language = \Drupal::languageManager()->getCurrentLanguage()->getId();

$node = \Drupal\node\Entity\Node::create(array(

          'type' => 'article',

          'title' => 'The title',

          'langcode' => $language,

          'uid' => 1,

          'status' => 1,

          'body' => array('The body text'),

          'field_date' => array("2000-01-30"),

            //'field_fields' => array('Custom values'), // Add your custon field values like this

    ));

$node->save();