Add distribution dates

examples/dataset.jsonld

@@ -41,14 +41,16 @@
     {
       "@type": "DataDownload",
       "encodingFormat": "application/sparql-query",
-      "contentUrl": "http://data.bibliotheken.nl/sparql"
+      "contentUrl": "http://data.bibliotheken.nl/sparql",
+      "dateCreated": "2023-06-01T08:00:00+01:00",
+      "dateModified": "2024-03-04T01:09:00+01:00"
     },
     {
       "@type": "DataDownload",
       "encodingFormat": "text/turtle",
       "contentUrl": "http://data.bibliotheken.nl/files/alba_20201016.ttl.gz",
       "name": "Datadump Alba Amicorum",
-      "datePublished": "2019-05-21",
+      "dateCreated": "2019-05-21",
       "dateModified": "2019-08-15",
       "contentSize": "614K"
     }

index.bs

@@ -419,6 +419,26 @@ The distributions are then included under the `distribution` attribute with the
 
 See [[#distribution-attributes]] for a full overview.
 
+### Creation and modification dates ### {#distribution-date}
+
+Publishers *SHOULD* make known when the [=distribution=] was originally created and when it was last updated.
+Please note that this is different from [[#dataset-date|dataset description’s dates]].
+Datetimes (‘2019-08-15T08:05:00Z’) are preferred because they offer greater precision, 
+but simple dates (‘2019-04-14’) are also allowed.
+
+<div class="example">
+    Specify distribution dates:
+
+    <pre highlight=json-ld>
+        {
+          "@context": "https://schema.org/",
+          "@type": "Distribution",
+          "dateCreated": "2019-04-14",
+          "dateModified": "2019-08-15T08:05:00"
+        }
+    </pre>
+</div>
+
 ### Developer documentation ### {#developer-docs}
 
 Publishers *SHOULD* link to documentation URLs via the [schema:usageInfo](https://schema.org/usageInfo) attribute. For datadumps this should be documentation about the