diff --git a/program/admin.py b/program/admin.py
index eb555541a623a6cdea222324fbd05a4a0b99ec56..413531e9c8e8d3e0f475219de122e52a0c367344 100644
--- a/program/admin.py
+++ b/program/admin.py
@@ -19,21 +19,21 @@ class ActivityFilter(admin.SimpleListFilter):
     def queryset(self, request, queryset):
         if self.parameter_name == 'has_timeslots':  # active/inactive ProgramSlots
             if self.value() == 'yes':
-                return queryset.filter(until__gt=datetime.now).distinct()
+                return queryset.filter(until__gt=datetime.now()).distinct()
             if self.value() == 'no':
-                return queryset.filter(until__lt=datetime.now).distinct()
+                return queryset.filter(until__lt=datetime.now()).distinct()
 
         if self.parameter_name == 'has_programslots_timeslots':  # active/inactive Shows
             if self.value() == 'yes':
-                return queryset.filter(programslots__until__gt=datetime.now).distinct()
+                return queryset.filter(programslots__until__gt=datetime.now()).distinct()
             if self.value() == 'no':
-                return queryset.filter(programslots__until__lt=datetime.now).distinct()
+                return queryset.filter(programslots__until__lt=datetime.now()).distinct()
 
         if self.parameter_name == 'has_shows_programslots_timeslots':  # active/inactive Hosts
             if self.value() == 'yes':
-                return queryset.filter(shows__programslots__until__gt=datetime.now).distinct()
+                return queryset.filter(shows__programslots__until__gt=datetime.now()).distinct()
             if self.value() == 'no':
-                return queryset.filter(shows__programslots__until__lt=datetime.now).distinct()
+                return queryset.filter(shows__programslots__until__lt=datetime.now()).distinct()
 
 
 class ActiveProgramSlotsFilter(ActivityFilter):
diff --git a/program/models.py b/program/models.py
index d52d1bf60dbc975960f1fef72e472ae8e4f2aaa6..9945145d34c20fbc7535d227ff89006f357011b9 100644
--- a/program/models.py
+++ b/program/models.py
@@ -226,7 +226,7 @@ class Host(models.Model):
         return reverse('host-detail', args=[str(self.id)])
 
     def active_shows(self):
-        return self.shows.filter(programslots__until__gt=datetime.today)
+        return self.shows.filter(programslots__until__gt=datetime.today())
 
 
 class Show(models.Model):
@@ -404,16 +404,16 @@ class TimeSlotManager(models.Manager):
     @staticmethod
     def get_or_create_current():
         try:
-            return TimeSlot.objects.get(start__lte=datetime.now, end__gt=datetime.now)
+            return TimeSlot.objects.get(start__lte=datetime.now(), end__gt=datetime.now())
         except MultipleObjectsReturned:
-            return TimeSlot.objects.filter(start__lte=datetime.now, end__gt=datetime.now)[0]
+            return TimeSlot.objects.filter(start__lte=datetime.now(), end__gt=datetime.now())[0]
         except ObjectDoesNotExist:
             once = RRule.objects.get(pk=1)
             today = date.today().weekday()
             default = Show.objects.get(pk=1)
 
-            previous_timeslot = TimeSlot.objects.filter(end__lte=datetime.now).order_by('-start')[0]
-            next_timeslot = TimeSlot.objects.filter(start__gte=datetime.now)[0]
+            previous_timeslot = TimeSlot.objects.filter(end__lte=datetime.now()).order_by('-start')[0]
+            next_timeslot = TimeSlot.objects.filter(start__gte=datetime.now())[0]
 
             dstart, tstart = previous_timeslot.end.date(), previous_timeslot.end.time()
             until, tend = next_timeslot.start.date(), next_timeslot.start.time()
diff --git a/program/views.py b/program/views.py
index a9c83e4512bb4c0e7192e704108a84e95d1c8eb2..ddc38cb47d5be471a083b73ed88c5313ac23c8ed 100644
--- a/program/views.py
+++ b/program/views.py
@@ -15,7 +15,7 @@ from program.utils import tofirstdayinisoweek, get_cached_shows
 
 class HostListView(ListView):
     context_object_name = 'host_list'
-    queryset = Host.objects.filter(Q(is_always_visible=True) | Q(shows__programslots__until__gt=datetime.now)).distinct()
+    queryset = Host.objects.filter(Q(is_always_visible=True) | Q(shows__programslots__until__gt=datetime.now())).distinct()
     template_name = 'host_list.html'
 
 
@@ -212,6 +212,7 @@ def json_day_schedule(request, year=None, month=None, day=None):
     return HttpResponse(json.dumps(schedule, ensure_ascii=False, encoding='utf8').encode('utf8'),
                         content_type="application/json; charset=utf-8")
 
+
 def json_timeslots_specials(request):
     specials = {}
     shows = get_cached_shows()['shows']
@@ -220,7 +221,8 @@ def json_timeslots_specials(request):
         if show['type'] == 's':
             specials[show['id']] = show
 
-    for ts in TimeSlot.objects.filter(end__gt=datetime.now, programslot__automation_id__in=specials.iterkeys()).select_related('show'):
+    for ts in TimeSlot.objects.filter(end__gt=datetime.now(),
+                                      programslot__automation_id__in=specials.iterkeys()).select_related('show'):
         automation_id = ts.programslot.automation_id
         specials[automation_id]['pv_id'] = int(ts.show.id)
         specials[automation_id]['pv_name'] = ts.show.name