diff --git a/src/Content/Conversation.php b/src/Content/Conversation.php
index d8cbbf7cbb..8fb078fce3 100644
--- a/src/Content/Conversation.php
+++ b/src/Content/Conversation.php
@@ -669,6 +669,7 @@ class Conversation
 						'folders'              => $folders,
 						'text'                 => strip_tags($body_html),
 						'localtime'            => DateTimeFormat::local($item['created'], 'r'),
+						'utc'                  => DateTimeFormat::utc($item['created'], 'c'),
 						'ago'                  => (($item['app']) ? $this->l10n->t('%s from %s', Temporal::getRelativeDate($item['created']), $item['app']) : Temporal::getRelativeDate($item['created'])),
 						'location_html'        => $location_html,
 						'indent'               => '',
diff --git a/src/Module/Settings/TwoFactor/Trusted.php b/src/Module/Settings/TwoFactor/Trusted.php
index e38d64ac04..844cd4dff4 100644
--- a/src/Module/Settings/TwoFactor/Trusted.php
+++ b/src/Module/Settings/TwoFactor/Trusted.php
@@ -8,6 +8,7 @@ use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
 use Friendica\Core\Renderer;
 use Friendica\Module\BaseSettings;
 use Friendica\Security\TwoFactor;
+use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Temporal;
 use UAParser\Parser;
 
@@ -88,7 +89,11 @@ class Trusted extends BaseSettings
 		$trustedBrowserDisplay = array_map(function (TwoFactor\Model\TrustedBrowser $trustedBrowser) use ($parser) {
 			$dates = [
 				'created_ago' => Temporal::getRelativeDate($trustedBrowser->created),
+				'created_utc' => DateTimeFormat::utc($trustedBrowser->created, 'c'),
+				'created_local' => DateTimeFormat::local($trustedBrowser->created, 'r'),
 				'last_used_ago' => Temporal::getRelativeDate($trustedBrowser->last_used),
+				'last_used_utc' => DateTimeFormat::utc($trustedBrowser->last_used, 'c'),
+				'last_used_local' => DateTimeFormat::local($trustedBrowser->last_used, 'r'),
 			];
 
 			$result = $parser->parse($trustedBrowser->user_agent);
diff --git a/src/Security/TwoFactor/Model/AppSpecificPassword.php b/src/Security/TwoFactor/Model/AppSpecificPassword.php
index cab1604838..0c47ed5564 100644
--- a/src/Security/TwoFactor/Model/AppSpecificPassword.php
+++ b/src/Security/TwoFactor/Model/AppSpecificPassword.php
@@ -87,6 +87,8 @@ class AppSpecificPassword
 
 		array_walk($appSpecificPasswords, function (&$value) {
 			$value['ago'] = Temporal::getRelativeDate($value['last_used']);
+			$value['utc'] = DateTimeFormat::utc($value['last_used'], 'c');
+			$value['local'] = DateTimeFormat::local($value['last_used'], 'r');
 		});
 
 		return $appSpecificPasswords;
diff --git a/view/templates/settings/twofactor/app_specific.tpl b/view/templates/settings/twofactor/app_specific.tpl
index 1f58267445..965caffc8c 100644
--- a/view/templates/settings/twofactor/app_specific.tpl
+++ b/view/templates/settings/twofactor/app_specific.tpl
@@ -30,9 +30,7 @@
 		                {{$app_specific_password.description}}
 					</td>
 					<td>
-						<span class="time" title="{{$app_specific_password.last_used}}" data-toggle="tooltip">
-							<time datetime="{{$app_specific_password.last_used}}">{{$app_specific_password.ago}}</time>
-						</span>
+						<time class="time" title="{{$app_specific_password.local}}" data-toggle="tooltip" datetime="{{$app_specific_password.utc}}">{{$app_specific_password.ago}}</time>
 					</td>
 					<td>
 						<button type="submit" name="revoke_id" class="btn btn-default btn-small" value="{{$app_specific_password.id}}">{{$revoke_label}}</button>
diff --git a/view/templates/settings/twofactor/trusted_browsers.tpl b/view/templates/settings/twofactor/trusted_browsers.tpl
index e6d434b4fe..29d2ab29c6 100644
--- a/view/templates/settings/twofactor/trusted_browsers.tpl
+++ b/view/templates/settings/twofactor/trusted_browsers.tpl
@@ -28,14 +28,10 @@
 		                {{$trusted_browser.browser}}
 					</td>
 					<td>
-						<span class="time" title="{{$trusted_browser.created}}" data-toggle="tooltip">
-							<time datetime="{{$trusted_browser.created}}">{{$trusted_browser.created_ago}}</time>
-						</span>
+						<time class="time" title="{{$trusted_browser.created_local}}" data-toggle="tooltip" datetime="{{$trusted_browser.created_utc}}">{{$trusted_browser.created_ago}}</time>
 					</td>
 					<td>
-						<span class="time" title="{{$trusted_browser.last_used}}" data-toggle="tooltip">
-							<time datetime="{{$trusted_browser.last_used}}">{{$trusted_browser.last_used_ago}}</time>
-						</span>
+						<time class="time" title="{{$trusted_browser.last_used_local}}" data-toggle="tooltip" datetime="{{$trusted_browser.last_used_utc}}">{{$trusted_browser.last_used_ago}}</time>
 					</td>
 					<td>
 						<button type="submit" name="remove_id" class="btn btn-default btn-small" value="{{$trusted_browser.cookie_hash}}">{{$remove_label}}</button>
diff --git a/view/templates/wall_thread.tpl b/view/templates/wall_thread.tpl
index c7da59a0de..d0e3b51eab 100644
--- a/view/templates/wall_thread.tpl
+++ b/view/templates/wall_thread.tpl
@@ -53,7 +53,7 @@
 		</div>
 		<div class="wall-item-author">
 				<a href="{{$item.profile_url}}" target="redir" title="{{$item.linktitle}}" class="wall-item-name-link"><span class="wall-item-name{{$item.sparkle}}" id="wall-item-name-{{$item.id}}">{{$item.name}}</span></a>{{if $item.owner_url}} {{$item.to}} <a href="{{$item.owner_url}}" target="redir" title="{{$item.olinktitle}}" class="wall-item-name-link"><span class="wall-item-name{{$item.osparkle}}" id="wall-item-ownername-{{$item.id}}">{{$item.owner_name}}</span></a> {{$item.vwall}}{{/if}}<br />
-				<div class="wall-item-ago" id="wall-item-ago-{{$item.id}}" title="{{$item.localtime}}"><time class="dt-published" datetime="{{$item.localtime}}">{{$item.ago}}</time><span class="pinned">{{$item.pinned}}</span></div>
+				<div class="wall-item-ago" id="wall-item-ago-{{$item.id}}"><time class="dt-published" title="{{$item.localtime}}" datetime="{{$item.utc}}">{{$item.ago}}</time><span class="pinned">{{$item.pinned}}</span></div>
 		</div>
 		<div class="wall-item-content" id="wall-item-content-{{$item.id}}">
 			<div class="wall-item-title p-name" id="wall-item-title-{{$item.id}}" dir="auto">{{$item.title}}</div>
diff --git a/view/theme/frio/templates/search_item.tpl b/view/theme/frio/templates/search_item.tpl
index e31537b159..c6f19eb168 100644
--- a/view/theme/frio/templates/search_item.tpl
+++ b/view/theme/frio/templates/search_item.tpl
@@ -67,7 +67,11 @@
 
 					<div class="additional-info text-muted">
 						<div id="wall-item-ago-{{$item.id}}" class="wall-item-ago">
-							<small><a href="{{$item.plink.orig}}"><span class="time" title="{{$item.localtime}}" data-toggle="tooltip">{{$item.ago}}</span></a></small>
+							<small>
+								<a href="{{$item.plink.orig}}">
+									<time class="time" title="{{$item.localtime}}" data-toggle="tooltip" datetime="{{$item.utc}}">{{$item.ago}}</time>
+								</a>
+							</small>
 						</div>
 
 						{{if $item.location_html}}
diff --git a/view/theme/frio/templates/wall_thread.tpl b/view/theme/frio/templates/wall_thread.tpl
index bbacdfc5b2..d6790b3e84 100644
--- a/view/theme/frio/templates/wall_thread.tpl
+++ b/view/theme/frio/templates/wall_thread.tpl
@@ -168,9 +168,7 @@ as the value of $top_child_total (this is done at the end of this file)
 					<div id="wall-item-ago-{{$item.id}}" class="wall-item-ago">
 						<small>
 							<a href="{{$item.plink.orig}}">
-								<span class="time" title="{{$item.localtime}}" data-toggle="tooltip">
-									<time class="dt-published" datetime="{{$item.localtime}}">{{$item.ago}}</time>
-								</span>
+								<time class="time dt-published" title="{{$item.localtime}}" data-toggle="tooltip" datetime="{{$item.utc}}">{{$item.ago}}</time>
 							</a>
 							{{if $item.owner_self}}
 								{{include file="sub/delivery_count.tpl" delivery=$item.delivery}}
@@ -201,7 +199,9 @@ as the value of $top_child_total (this is done at the end of this file)
 					<a href="{{$item.profile_url}}" title="{{$item.linktitle}}" class="wall-item-name-link userinfo hover-card"><span>{{$item.name}}</span></a>
 					<p class="text-muted">
 						<small>
-							<a class="time" href="{{$item.plink.orig}}"><span class="wall-item-ago">{{$item.ago}}</span></a>
+							<a href="{{$item.plink.orig}}">
+								<time class="time" class="wall-item-ago" datetime="{{$item.utc}}">{{$item.ago}}</time>
+							</a>
 							{{if $item.location_html}}&nbsp;&mdash;&nbsp;({{$item.location_html nofilter}}){{/if}}
 							{{if $item.owner_self}}
 								{{include file="sub/delivery_count.tpl" delivery=$item.delivery}}
@@ -220,7 +220,9 @@ as the value of $top_child_total (this is done at the end of this file)
 					<a href="{{$item.profile_url}}" title="{{$item.linktitle}}" class="wall-item-name-link userinfo hover-card"><span class="fakelink">{{$item.name}}</span></a>
 					<span class="text-muted">
 				<small>
-					<a class="time" href="{{$item.plink.orig}}" title="{{$item.localtime}}" data-toggle="tooltip">{{$item.ago}}</a>
+					<a href="{{$item.plink.orig}}">
+						<time class="time" title="{{$item.localtime}}" data-toggle="tooltip" datetime="{{$item.utc}}">{{$item.ago}}</time>
+					</a>
 					{{if $item.location_html}}&nbsp;&mdash;&nbsp;({{$item.location_html nofilter}}){{/if}}
 					{{if $item.owner_self}}
 						{{include file="sub/delivery_count.tpl" delivery=$item.delivery}}
diff --git a/view/theme/quattro/templates/wall_thread.tpl b/view/theme/quattro/templates/wall_thread.tpl
index 3eab3f5690..29dae72b43 100644
--- a/view/theme/quattro/templates/wall_thread.tpl
+++ b/view/theme/quattro/templates/wall_thread.tpl
@@ -90,7 +90,7 @@
                                 title="{{$item.linktitle}}"
                                 class="wall-item-name-link"><span
                                 class="wall-item-name{{$item.sparkle}}">{{$item.name}}</span></a>
-                                <span class="wall-item-ago" title="{{$item.localtime}}"><time class="dt-published" datetime="{{$item.localtime}}">{{$item.ago}}</time></span>
+                                <span class="wall-item-ago"><time class="dt-published" title="{{$item.localtime}}" datetime="{{$item.utc}}">{{$item.ago}}</time></span>
 				<span class="pinned">{{$item.pinned}}</span>
 				 {{if $item.owner_url}}<br/>{{$item.to}} <a href="{{$item.owner_url}}" target="redir" title="{{$item.olinktitle}}" class="wall-item-name-link"><span class="wall-item-name{{$item.osparkle}}" id="wall-item-ownername-{{$item.id}}">{{$item.owner_name}}</span></a> {{$item.vwall}}
 				 {{/if}}
diff --git a/view/theme/smoothly/templates/wall_thread.tpl b/view/theme/smoothly/templates/wall_thread.tpl
index 37bff21544..773938f3c5 100644
--- a/view/theme/smoothly/templates/wall_thread.tpl
+++ b/view/theme/smoothly/templates/wall_thread.tpl
@@ -54,7 +54,7 @@
 			<span class="wall-item-name{{$item.sparkle}}" id="wall-item-name-{{$item.id}}">{{$item.name}}</span>
 			</a>
 			<div class="wall-item-ago">&bull;</div>
-			<div class="wall-item-ago" id="wall-item-ago-{{$item.id}}" title="{{$item.localtime}}"><time class="dt-published" datetime="{{$item.localtime}}">{{$item.ago}}</time><span class="pinned">{{$item.pinned}}</span></div>
+			<div class="wall-item-ago" id="wall-item-ago-{{$item.id}}"><time class="dt-published" title="{{$item.localtime}}" datetime="{{$item.utc}}">{{$item.ago}}</time><span class="pinned">{{$item.pinned}}</span></div>
 		</div>
 
 		<div>
diff --git a/view/theme/vier/templates/wall_thread.tpl b/view/theme/vier/templates/wall_thread.tpl
index 1d13b9e528..f2bd02e7e7 100644
--- a/view/theme/vier/templates/wall_thread.tpl
+++ b/view/theme/vier/templates/wall_thread.tpl
@@ -56,7 +56,7 @@
 			<a href="{{$item.profile_url}}" target="redir" title="{{$item.linktitle}}" class="wall-item-name-link"><span class="wall-item-name{{$item.sparkle}}">{{$item.name}}</span></a>
 			{{if $item.owner_url}}{{$item.via}} <a href="{{$item.owner_url}}" target="redir" title="{{$item.olinktitle}}" class="wall-item-name-link"><span class="wall-item-name{{$item.osparkle}}" id="wall-item-ownername-{{$item.id}}">{{$item.owner_name}}</span></a>{{/if}}
 			<span class="wall-item-ago">
-				{{if $item.plink}}<a title="{{$item.plink.title}}" href="{{$item.plink.href}}" class="u-url" style="color: #999"><time class="dt-published" datetime="{{$item.localtime}}">{{$item.created}}</time></a>{{else}} <time class="dt-published" datetime="{{$item.localtime}}">{{$item.created}}</time> {{/if}}
+				{{if $item.plink}}<a title="{{$item.plink.title}}" href="{{$item.plink.href}}" class="u-url" style="color: #999"><time class="dt-published" datetime="{{$item.utc}}">{{$item.created}}</time></a>{{else}} <time class="dt-published" datetime="{{$item.utc}}">{{$item.created}}</time> {{/if}}
 				{{if $item.owner_self}}
 					{{include file="sub/delivery_count.tpl" delivery=$item.delivery}}
 				{{/if}}