diff --git a/app/templates/post/_post_full.html b/app/templates/post/_post_full.html
index 9ae42048..1e6ed8b5 100644
--- a/app/templates/post/_post_full.html
+++ b/app/templates/post/_post_full.html
@@ -16,9 +16,9 @@
             {% endif -%}
             <p>{% if post.reports > 0 and current_user.is_authenticated and post.community.is_moderator(current_user) -%}
                     <span class="red fe fe-report" title="{{ _('Reported. Check post for issues.') }}"></span>
-                {% endif -%}<small>submitted {{ arrow.get(post.posted_at).humanize(locale=locale) }} by
+                {% endif -%}<small>submitted <time datetime="{{ arrow.get(post.posted_at) }}" title="{{ arrow.get(post.posted_at) }}">{{ arrow.get(post.posted_at).humanize(locale=locale) }}</time> by
                 {{ render_username(post.author) }}
-                {% if post.edited_at -%} edited {{ arrow.get(post.edited_at).humanize(locale=locale) }}{% endif -%}</small>
+                {% if post.edited_at -%} edited <time datetime="{{ arrow.get(post.posted_at) }}" title="{{ arrow.get(post.posted_at) }}">{{ arrow.get(post.edited_at).humanize(locale=locale) }}{% endif -%}</time></small>
             </p>
             {% if post.type == POST_TYPE_IMAGE -%}
                 <div class="post_image">
diff --git a/app/templates/post/_post_reply_teaser.html b/app/templates/post/_post_reply_teaser.html
index 1f57ea73..155da4d1 100644
--- a/app/templates/post/_post_reply_teaser.html
+++ b/app/templates/post/_post_reply_teaser.html
@@ -34,7 +34,7 @@
             {% endif -%}
         </div>
         <div class="col-auto text-muted small pt-05">
-            {{ arrow.get(post_reply.posted_at).humanize(locale=locale) }}{% if post_reply.edited_at -%}, edited {{ arrow.get(post_reply.edited_at).humanize(locale=locale) }}{% endif -%}
+            <time datetime="{{ arrow.get(post_reply.posted_at) }}" title="{{ arrow.get(post_reply.posted_at) }}">{{ arrow.get(post_reply.posted_at).humanize(locale=locale) }}</time>{% if post_reply.edited_at -%}, edited <time datetime="{{ arrow.get(post_reply.posted_at) }}" title="{{ arrow.get(post_reply.posted_at) }}">{{ arrow.get(post_reply.edited_at).humanize(locale=locale) }}</time>{% endif -%}
         </div>
         <div class="col-auto">
             {% if post_reply.reports and current_user.is_authenticated and post_reply.post.community.is_moderator(current_user) -%}
diff --git a/app/templates/post/post_teaser/_title.html b/app/templates/post/post_teaser/_title.html
index 41606ba4..4860b41d 100644
--- a/app/templates/post/post_teaser/_title.html
+++ b/app/templates/post/post_teaser/_title.html
@@ -26,4 +26,4 @@
 <span class="author small">{% if show_post_community -%}<a href="/c/{{ post.community.link() }}" aria-label="{{ _('Go to community %(name)s', name=post.community.name) }}">
     {% if post.community.icon_id and not low_bandwidth %}<img class="community_icon_small rounded-circle" src="{{ post.community.icon_image('tiny') }}" alt="Community icon" />{% endif -%}
     c/{{ post.community.name }}</a>{% endif -%}
-    by {{ render_username(post.author) }} <time datetime="{{ post.last_active }}">{{ post.posted_at_localized(sort, locale) }}</time></span>
\ No newline at end of file
+    by {{ render_username(post.author) }} <time datetime="{{ post.last_active }}" title="{{ post.last_active }}">{{ post.posted_at_localized(sort, locale) }}</time></span>