diff --git a/reference/datetime/formats.xml b/reference/datetime/formats.xml
index d3aa74bfb5..d67d55e5b5 100644
--- a/reference/datetime/formats.xml
+++ b/reference/datetime/formats.xml
@@ -123,9 +123,9 @@ class DateTime#1 (3) {
   <para>
    This page describes the different date/time formats that the
    <classname>DateTimeImmutable</classname>, <classname>DateTime</classname>,
-  <function>date_create</function>,
-  <function>date_create_immutable</function>, and
-  <function>strtotime</function> parser understands.
+   <function>date_create</function>,
+   <function>date_create_immutable</function>, and
+   <function>strtotime</function> parser understands.
   </para>
   
   <table>
@@ -281,8 +281,10 @@ class DateTime#1 (3) {
   
   <para>
    This page describes the different date formats that the
-   <function>strtotime</function>, <classname>DateTime</classname> and
-   <function>date_create</function> parser understands.
+   <classname>DateTimeImmutable</classname>, <classname>DateTime</classname>,
+   <function>date_create</function>,
+   <function>date_create_immutable</function>, and
+   <function>strtotime</function> parser understands.
   </para>
   
   <table>
@@ -558,8 +560,10 @@ class DateTime#1 (3) {
   
   <para>
    This page describes the different compound date/time formats that the
-   <function>strtotime</function>, <classname>DateTime</classname> and
-   <function>date_create</function> parser understands.
+   <classname>DateTimeImmutable</classname>, <classname>DateTime</classname>,
+   <function>date_create</function>,
+   <function>date_create_immutable</function>, and
+   <function>strtotime</function> parser understands.
   </para>
   
   <table>
@@ -657,6 +661,72 @@ class DateTime#1 (3) {
    </tgroup>
   </table>
   
+  <table>
+   <title>Standards Formats</title>
+   <tgroup cols="2">
+    <thead>
+     <row>
+      <entry>Description</entry>
+      <entry>Examples</entry>
+     </row>
+    </thead>
+    <tbody>
+     <row>
+      <entry>ATOM</entry>
+      <entry>"2022-06-02T16:58:35+00:00"</entry>
+     </row>
+     <row>
+      <entry>COOKIE</entry>
+      <entry>"Thursday, 02-Jun-2022 16:58:35 UTC"</entry>
+     </row>
+     <row>
+      <entry>ISO8601</entry>
+      <entry>"2022-06-02T16:58:35+0000"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;822">RFC 822</link></entry>
+      <entry>"Thu, 02 Jun 22 16:58:35 +0000"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;850">RFC 850</link></entry>
+      <entry>"Thursday, 02-Jun-22 16:58:35 UTC"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;1036">RFC 1036</link></entry>
+      <entry>"Thu, 02 Jun 22 16:58:35 +0000"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;1123">RFC 1123</link></entry>
+      <entry>"Thu, 02 Jun 2022 16:58:35 +0000"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;2822">RFC 2822</link></entry>
+      <entry>"Thu, 02 Jun 2022 16:58:35 +0000"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;3339">RFC 3339</link></entry>
+      <entry>"2022-06-02T16:58:35+00:00"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;3339">RFC 3339</link> Extended</entry>
+      <entry>"2022-06-02T16:58:35.698+00:00"</entry>
+     </row>
+     <row>
+      <entry><link xlink:href="&url.rfc;7231">RFC 7231</link></entry>
+      <entry>"Thu, 02 Jun 2022 16:58:35 GMT"</entry>
+     </row>
+     <row>
+      <entry>RSS</entry>
+      <entry>"Thu, 02 Jun 2022 16:58:35 +0000"</entry>
+     </row>
+     <row>
+      <entry>W3C</entry>
+      <entry>"2022-06-02T16:58:35+00:00"</entry>
+     </row>
+    </tbody>
+   </tgroup>
+  </table>
+
   <table>
    <title>Localized Notations</title>
    <tgroup cols="3">
@@ -749,8 +819,10 @@ class DateTime#1 (3) {
   <title>Relative Formats</title>
   <para>
    This page describes the different relative date/time formats that the
-   <function>strtotime</function>, <classname>DateTime</classname> and
-   <function>date_create</function> parser understands.
+   <classname>DateTimeImmutable</classname>, <classname>DateTime</classname>,
+   <function>date_create</function>,
+   <function>date_create_immutable</function>, and
+   <function>strtotime</function> parser understands.
   </para>
   
   <table>