diff --git a/rattail_tempmon/server.py b/rattail_tempmon/server.py
index 7b834dc..615bddc 100644
--- a/rattail_tempmon/server.py
+++ b/rattail_tempmon/server.py
@@ -183,13 +183,12 @@ class TempmonServerDaemon(Daemon):
             return False
 
     def update_status(self, probe, status, reading=None):
-        now = localtime(self.config)
         data = {
             'probe': probe,
             'status': self.enum.TEMPMON_PROBE_STATUS[status],
             'reading': reading,
             'taken': localtime(self.config, reading.taken, from_utc=True) if reading else None,
-            'now': now,
+            'now': localtime(self.config, self.now, from_utc=True),
         }
 
         prev_status = probe.status
@@ -232,10 +231,10 @@ class TempmonServerDaemon(Daemon):
         # fetch last 90 minutes of readings
         session = orm.object_session(probe)
         recent_minutes = 90     # TODO: make configurable
-        cutoff = now - datetime.timedelta(seconds=(60 * recent_minutes))
+        cutoff = self.now - datetime.timedelta(seconds=(60 * recent_minutes))
         readings = session.query(tempmon.Reading)\
                           .filter(tempmon.Reading.probe == probe)\
-                          .filter(tempmon.Reading.taken >= make_utc(cutoff))\
+                          .filter(tempmon.Reading.taken >= cutoff)\
                           .order_by(tempmon.Reading.taken.desc())
         data['recent_minutes'] = recent_minutes
         data['recent_readings'] = readings