diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 5fc0075..496e269 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -24,6 +24,8 @@ and this project adheres to https://semver.org/spec/v2.0.0.html[Semantic Version
 
 - Revert the site layout.
 
+- Update the datetime string for the appropriate components.
+
 
 
 
diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index c52ec00..918e64e 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -35,12 +35,12 @@
     <!-- Only show the creation date if the `date` field is valid. -->
     {{- if ne (.PublishDate.Format "2006") "0001" -}}
     <!-- Publication date. -->
-    <p data-content-publication-date="{{ .PublishDate }}">{{ i18n "published_on" }}: <time datetime="{{ .PublishDate.Format "2006-01-02" }}">{{ .PublishDate.Format "2006-01-02" }}</time></p>
+    <p data-content-publication-date="{{ .PublishDate.Format "2006-01-02T15:04:05Z07:00" }}">{{ i18n "published_on" }}: <time datetime="{{ .PublishDate.Format "2006-01-02T15:04:05Z07:00" }}">{{ .PublishDate.Format "2006-01-02" }}</time></p>
     {{- end }}
 
     <!-- Modification date (will only appear if the publication date is less than the modified date.) -->
     {{- if ne .PublishDate .Lastmod }}
-    <p data-content-modification-date="{{ .Lastmod }}">{{ i18n "updated_on" }}: <time datetime="{{ .Lastmod.Format "2006-01-02" }}">{{ .Lastmod.Format "2006-01-02" }}</time></p>
+    <p data-content-modification-date="{{ .Lastmod.Format "2006-01-02T15:04:05Z07:00" }}">{{ i18n "updated_on" }}: <time datetime="{{ .Lastmod.Format "2006-01-02T15:04:05Z07:00" }}">{{ .Lastmod.Format "2006-01-02" }}</time></p>
     {{- end }}
 
     <!-- Link the translated versions if the article has at least one translated page. -->
diff --git a/layouts/partials/components/post-meta.html b/layouts/partials/components/post-meta.html
index 1400327..a031a28 100644
--- a/layouts/partials/components/post-meta.html
+++ b/layouts/partials/components/post-meta.html
@@ -2,19 +2,24 @@
   The component where it will display the metadata of the post.
   This is used on list templates but feel free to change that.
 */ -}}
+{{- $RFC3339 := "2006-01-02T15:04:05Z07:00" }}
 <div class="list post__meta" aria-hidden="true">
   {{- if ne (.PublishDate.Format "2006") "0001" -}}
-  <time datetime="{{ .PublishDate }}" title="{{ i18n "published_on" }}">
+  <span>
     {{ partial "components/heroicon.html" "calendar" }}
-    <span style="margin-left: 0.5em;">{{ .PublishDate.Format "2006-01-02" }}</span>
-  </time>
+    <time datetime="{{ .PublishDate.Format $RFC3339 }}" title="{{ i18n "published_on" }}" style="margin-left: 0.5em;">
+      {{ .PublishDate.Format "2006-01-02" }}
+    </time>
+  </span>
   {{- end }}
 
   {{- if and .GitInfo (ne (.PublishDate.Format "2006-01-02") (.Lastmod.Format "2006-01-02")) }}
-  <time datetime="{{ .Lastmod }}" title="{{ i18n "updated_on" }}">
+  <span>
     {{ partial "components/heroicon.html" "arrow-path" }}
-    <span style="margin-left: 0.5em;">{{ .Lastmod.Format "2006-01-02" }}</span>
-  </time>
+    <time datetime="{{ .Lastmod.Format $RFC3339 }}" title="{{ i18n "updated_on" }}" style="margin-left: 0.5em;">
+      {{ .Lastmod.Format "2006-01-02" }}
+    </time>
+  </span>
   {{- end }}
 
   {{- /* The authors are appended with 'et al' if there's more than one author in the map. */ -}}