display time for last-seen

server/templates/instances.html.j2

@@ -82,7 +82,8 @@
               {%- else -%}
                 {# <!-- no healthy entries, show last time host was seen healthy --> #}
                 {%- if host.last_healthy -%}
-                Last seen healthy: {{host.last_healthy | truncate(length=10, end="") | replace(from="-", to=".")}}
+                Last seen healthy: {{host.last_healthy | truncate(length=16, end="") | replace(from="-", to=".") | replace(from="T", to=" ")}}
+                <a rel="nofollow" href="https://time.is/UTC">UTC</a>
                 {%- else -%}
                 Never seen healthy.
                 {%- endif -%}