post-date-updated-date-drupal8.twig

{% if node.created.value and node.changed.value is defined %}
  {% set node_pub = node.created.value|format_date() %}
  {% set node_upd = node.changed.value|format_date() %}
  <p>
    {% trans %}
      Published: {{ node_pub|placeholder|striptags }},
      last updated: {{ node_upd|placeholder|striptags }}
    {% endtrans %}
  </p>
{% endif %}