diff --git a/core/modules/node/templates/node.html.twig b/core/modules/node/templates/node.html.twig
index e7e353d..4ee9f17 100644
--- a/core/modules/node/templates/node.html.twig
+++ b/core/modules/node/templates/node.html.twig
@@ -4,13 +4,18 @@
  * Default theme implementation to display a node.
  *
  * Available variables:
- * - node: The node entity with limited access to object properties and methods.
-     Only "getter" methods (method names starting with "get", "has", or "is")
-     and a few common methods such as "id" and "label" are available. Calling
-     other methods (such as node.delete) will result in an exception.
+ *   Only "getter" methods (method names starting with "get", "has", or "is")
+ *   and a few common methods such as "id" and "label" are available. Calling
+ *   other methods (such as node.delete) will result in an exception.
+ *   There are available following properties for node variable:
+ *   - id: The node ID.
+ *   - bundle: The type of the node, for example, "page" or "article".
+ *   - ownerId: The user ID of the node author.
+ *   - createdTime: Time the node was published formatted in Unix timestamp.
+ *   - changedTime: Time the node was changed formatted in Unix timestamp.
  * - label: The title of the node.
- * - content: All node items. Use {{ content }} to print them all,
- *   or print a subset such as {{ content.field_example }}. Use
+ * - content: All node items. Use {{ content }} to print them all, or print a
+ *   subset such as {{ content.field_example }}. Use
  *   {{ content|without('field_example') }} to temporarily suppress the printing
  *   of a given child element.
  * - author_picture: The node author user entity, rendered using the "compact"
@@ -36,12 +41,12 @@
  *     teaser listings.
  *   - node--unpublished: Appears on unpublished nodes visible only to site
  *     admins.
- * - title_attributes: Same as attributes, except applied to the main title
+ * - title_attributes: Same as attributes, except applied to the main title tag
+ *   that appears in the template.
+ * - content_attributes: Same as attributes, except applied to the main content
  *   tag that appears in the template.
- * - content_attributes: Same as attributes, except applied to the main
- *   content tag that appears in the template.
- * - author_attributes: Same as attributes, except applied to the author of
- *   the node tag that appears in the template.
+ * - author_attributes: Same as attributes, except applied to the author of the
+ *   node tag that appears in the template.
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
  * - title_suffix: Additional output populated by modules, intended to be
@@ -53,8 +58,8 @@
  *   node cannot hold the main body content.
  * - logged_in: Flag for authenticated user status. Will be true when the
  *   current user is a logged-in member.
- * - is_admin: Flag for admin user status. Will be true when the current user
- *   is an administrator.
+ * - is_admin: Flag for admin user status. Will be true when the current user is
+ *   an administrator.
  *
  * @see template_preprocess_node()
  *
diff --git a/core/themes/bartik/templates/node.html.twig b/core/themes/bartik/templates/node.html.twig
index 5d509aa..9281eba 100644
--- a/core/themes/bartik/templates/node.html.twig
+++ b/core/themes/bartik/templates/node.html.twig
@@ -4,13 +4,18 @@
  * Bartik's theme implementation to display a node.
  *
  * Available variables:
- * - node: The node entity with limited access to object properties and methods.
-     Only "getter" methods (method names starting with "get", "has", or "is")
-     and a few common methods such as "id" and "label" are available. Calling
-     other methods (such as node.delete) will result in an exception.
+ *   Only "getter" methods (method names starting with "get", "has", or "is")
+ *   and a few common methods such as "id" and "label" are available. Calling
+ *   other methods (such as node.delete) will result in an exception.
+ *   There are available following properties for node variable:
+ *   - id: The node ID.
+ *   - bundle: The type of the node, for example, "page" or "article".
+ *   - ownerId: The user ID of the node author.
+ *   - createdTime: Time the node was published formatted in Unix timestamp.
+ *   - changedTime: Time the node was changed formatted in Unix timestamp.
  * - label: The title of the node.
- * - content: All node items. Use {{ content }} to print them all,
- *   or print a subset such as {{ content.field_example }}. Use
+ * - content: All node items. Use {{ content }} to print them all, or print a
+ *   subset such as {{ content.field_example }}. Use
  *   {{ content|without('field_example') }} to temporarily suppress the printing
  *   of a given child element.
  * - author_picture: The node author user entity, rendered using the "compact"
@@ -36,12 +41,12 @@
  *     teaser listings.
  *   - node--unpublished: Appears on unpublished nodes visible only to site
  *     admins.
- * - title_attributes: Same as attributes, except applied to the main title
+ * - title_attributes: Same as attributes, except applied to the main title tag
+ *   that appears in the template.
+ * - content_attributes: Same as attributes, except applied to the main content
  *   tag that appears in the template.
- * - content_attributes: Same as attributes, except applied to the main
- *   content tag that appears in the template.
- * - author_attributes: Same as attributes, except applied to the author of
- *   the node tag that appears in the template.
+ * - author_attributes: Same as attributes, except applied to the author of the
+ *   node tag that appears in the template.
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
  * - title_suffix: Additional output populated by modules, intended to be
@@ -53,8 +58,8 @@
  *   node cannot hold the main body content.
  * - logged_in: Flag for authenticated user status. Will be true when the
  *   current user is a logged-in member.
- * - is_admin: Flag for admin user status. Will be true when the current user
- *   is an administrator.
+ * - is_admin: Flag for admin user status. Will be true when the current user is
+ *   an administrator.
  *
  * @see template_preprocess_node()
  */
diff --git a/core/themes/classy/templates/content/node.html.twig b/core/themes/classy/templates/content/node.html.twig
index 5af7c25..c73bf5e 100644
--- a/core/themes/classy/templates/content/node.html.twig
+++ b/core/themes/classy/templates/content/node.html.twig
@@ -4,13 +4,18 @@
  * Theme override to display a node.
  *
  * Available variables:
- * - node: The node entity with limited access to object properties and methods.
-     Only "getter" methods (method names starting with "get", "has", or "is")
-     and a few common methods such as "id" and "label" are available. Calling
-     other methods (such as node.delete) will result in an exception.
+ *   Only "getter" methods (method names starting with "get", "has", or "is")
+ *   and a few common methods such as "id" and "label" are available. Calling
+ *   other methods (such as node.delete) will result in an exception.
+ *   There are available following properties for node variable:
+ *   - id: The node ID.
+ *   - bundle: The type of the node, for example, "page" or "article".
+ *   - ownerId: The user ID of the node author.
+ *   - createdTime: Time the node was published formatted in Unix timestamp.
+ *   - changedTime: Time the node was changed formatted in Unix timestamp.
  * - label: The title of the node.
- * - content: All node items. Use {{ content }} to print them all,
- *   or print a subset such as {{ content.field_example }}. Use
+ * - content: All node items. Use {{ content }} to print them all, or print a
+ *   subset such as {{ content.field_example }}. Use
  *   {{ content|without('field_example') }} to temporarily suppress the printing
  *   of a given child element.
  * - author_picture: The node author user entity, rendered using the "compact"
@@ -36,12 +41,12 @@
  *     teaser listings.
  *   - node--unpublished: Appears on unpublished nodes visible only to site
  *     admins.
- * - title_attributes: Same as attributes, except applied to the main title
+ * - title_attributes: Same as attributes, except applied to the main title tag
+ *   that appears in the template.
+ * - content_attributes: Same as attributes, except applied to the main content
  *   tag that appears in the template.
- * - content_attributes: Same as attributes, except applied to the main
- *   content tag that appears in the template.
- * - author_attributes: Same as attributes, except applied to the author of
- *   the node tag that appears in the template.
+ * - author_attributes: Same as attributes, except applied to the author of the
+ *   node tag that appears in the template.
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
  * - title_suffix: Additional output populated by modules, intended to be
@@ -53,8 +58,8 @@
  *   node cannot hold the main body content.
  * - logged_in: Flag for authenticated user status. Will be true when the
  *   current user is a logged-in member.
- * - is_admin: Flag for admin user status. Will be true when the current user
- *   is an administrator.
+ * - is_admin: Flag for admin user status. Will be true when the current user is
+ *   an administrator.
  *
  * @see template_preprocess_node()
  *
diff --git a/core/themes/stable/templates/content/node.html.twig b/core/themes/stable/templates/content/node.html.twig
index 68a92ea..979c844 100644
--- a/core/themes/stable/templates/content/node.html.twig
+++ b/core/themes/stable/templates/content/node.html.twig
@@ -4,13 +4,18 @@
  * Theme override to display a node.
  *
  * Available variables:
- * - node: The node entity with limited access to object properties and methods.
-     Only "getter" methods (method names starting with "get", "has", or "is")
-     and a few common methods such as "id" and "label" are available. Calling
-     other methods (such as node.delete) will result in an exception.
+ *   Only "getter" methods (method names starting with "get", "has", or "is")
+ *   and a few common methods such as "id" and "label" are available. Calling
+ *   other methods (such as node.delete) will result in an exception.
+ *   There are available following properties for node variable:
+ *   - id: The node ID.
+ *   - bundle: The type of the node, for example, "page" or "article".
+ *   - ownerId: The user ID of the node author.
+ *   - createdTime: Time the node was published formatted in Unix timestamp.
+ *   - changedTime: Time the node was changed formatted in Unix timestamp.
  * - label: The title of the node.
- * - content: All node items. Use {{ content }} to print them all,
- *   or print a subset such as {{ content.field_example }}. Use
+ * - content: All node items. Use {{ content }} to print them all, or print a
+ *   subset such as {{ content.field_example }}. Use
  *   {{ content|without('field_example') }} to temporarily suppress the printing
  *   of a given child element.
  * - author_picture: The node author user entity, rendered using the "compact"
@@ -36,12 +41,12 @@
  *     teaser listings.
  *   - node--unpublished: Appears on unpublished nodes visible only to site
  *     admins.
- * - title_attributes: Same as attributes, except applied to the main title
+ * - title_attributes: Same as attributes, except applied to the main title tag
+ *   that appears in the template.
+ * - content_attributes: Same as attributes, except applied to the main content
  *   tag that appears in the template.
- * - content_attributes: Same as attributes, except applied to the main
- *   content tag that appears in the template.
- * - author_attributes: Same as attributes, except applied to the author of
- *   the node tag that appears in the template.
+ * - author_attributes: Same as attributes, except applied to the author of the
+ *   node tag that appears in the template.
  * - title_prefix: Additional output populated by modules, intended to be
  *   displayed in front of the main title tag that appears in the template.
  * - title_suffix: Additional output populated by modules, intended to be
@@ -53,8 +58,8 @@
  *   node cannot hold the main body content.
  * - logged_in: Flag for authenticated user status. Will be true when the
  *   current user is a logged-in member.
- * - is_admin: Flag for admin user status. Will be true when the current user
- *   is an administrator.
+ * - is_admin: Flag for admin user status. Will be true when the current user is
+ *   an administrator.
  *
  * @see template_preprocess_node()
  *