diff --git a/rattail_tempmon/server.py b/rattail_tempmon/server.py
index 58808f8..64daa78 100644
--- a/rattail_tempmon/server.py
+++ b/rattail_tempmon/server.py
@@ -1,8 +1,8 @@
-# -*- coding: utf-8 -*-
+# -*- coding: utf-8; -*-
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2017 Lance Edgar
+#  Copyright © 2010-2018 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -30,6 +30,8 @@ import time
 import datetime
 import logging
 
+import humanize
+
 from rattail.db import Session, api
 from rattail_tempmon.db import Session as TempmonSession, model as tempmon
 from rattail.daemon import Daemon
@@ -183,6 +185,10 @@ class TempmonServerDaemon(Daemon):
             if (self.now - probe.status_changed) <= timeout:
                 return
 
+        since = localtime(self.config, probe.status_changed, from_utc=True)
+        data['status_since'] = since.strftime('%I:%M %p')
+        data['status_since_delta'] = humanize.naturaltime(self.now - probe.status_changed)
+
         msgtypes = {
             self.enum.TEMPMON_PROBE_STATUS_LOW_TEMP             : 'tempmon_low_temp',
             self.enum.TEMPMON_PROBE_STATUS_HIGH_TEMP            : 'tempmon_high_temp',