diff --git a/app/helpers/changesets_helper.rb b/app/helpers/changesets_helper.rb
index 9d46de120..3a26c2001 100644
--- a/app/helpers/changesets_helper.rb
+++ b/app/helpers/changesets_helper.rb
@@ -14,16 +14,18 @@ module ChangesetsHelper
       action = :created
       time = time_ago_in_words(changeset.created_at, :scope => :"datetime.distance_in_words_ago")
       title = l(changeset.created_at)
+      datetime = changeset.created_at.xmlschema
     else
       action = :closed
       time = time_ago_in_words(changeset.closed_at, :scope => :"datetime.distance_in_words_ago")
       title = safe_join([t("browse.created"), ": ", l(changeset.created_at), "
".html_safe, t("browse.closed"), ": ", l(changeset.closed_at)])
+      datetime = changeset.closed_at.xmlschema
     end
 
     if params.key?(:display_name)
-      t "browse.#{action}_ago_html", :time_ago => tag.abbr(time, :title => title)
+      t "browse.#{action}_ago_html", :time_ago => tag.time(time, :title => title, :datetime => datetime)
     else
-      t "browse.#{action}_ago_by_html", :time_ago => tag.abbr(time, :title => title),
+      t "browse.#{action}_ago_by_html", :time_ago => tag.time(time, :title => title, :datetime => datetime),
                                         :user => changeset_user_link(changeset)
     end
   end
diff --git a/test/helpers/changesets_helper_test.rb b/test/helpers/changesets_helper_test.rb
index f6cfb3c06..067c2b071 100644
--- a/test/helpers/changesets_helper_test.rb
+++ b/test/helpers/changesets_helper_test.rb
@@ -17,11 +17,11 @@ class ChangesetsHelperTest < ActionView::TestCase
     # We need to explicitly reset the closed_at to some point in the future, and avoid the before_save callback
     changeset.update_column(:closed_at, Time.now.utc + 1.day) # rubocop:disable Rails/SkipsModelValidations
 
-    assert_match %r{^Created <abbr title="Mon, 01 Jan 2007 00:00:00 \+0000">.*</abbr> by anonymous$}, changeset_details(changeset)
+    assert_match %r{^Created <time title="Mon, 01 Jan 2007 00:00:00 \+0000" datetime="2007-01-01T00:00:00Z">.*</time> by anonymous$}, changeset_details(changeset)
 
     changeset = create(:changeset, :created_at => Time.utc(2007, 1, 1, 0, 0, 0), :closed_at => Time.utc(2007, 1, 2, 0, 0, 0))
     user_link = %(<a href="/user/#{ERB::Util.u(changeset.user.display_name)}">#{changeset.user.display_name}</a>)
 
-    assert_match %r{^Closed <abbr title="Created: Mon, 01 Jan 2007 00:00:00 \+0000&#10;Closed: Tue, 02 Jan 2007 00:00:00 \+0000">.*</abbr> by #{user_link}$}, changeset_details(changeset)
+    assert_match %r{^Closed <time title="Created: Mon, 01 Jan 2007 00:00:00 \+0000&#10;Closed: Tue, 02 Jan 2007 00:00:00 \+0000" datetime="2007-01-02T00:00:00Z">.*</time> by #{user_link}$}, changeset_details(changeset)
   end
 end