Use timezone when getting PPD

boards/models/post.py

@@ -174,8 +174,10 b' class PostManager(models.Manager):'
         for i in POSTS_PER_DAY_RANGE:
             day_end = today + timedelta(i - 1)
             day_start = today + timedelta(i - 2)
-            day_time_start = datetime.combine(day_start, dtime())
-            day_time_end = datetime.combine(day_end, dtime())
+            day_time_start = timezone.make_aware(datetime.combine(day_start,
+                dtime()), timezone.get_current_timezone())
+            day_time_end = timezone.make_aware(datetime.combine(day_end,
+                dtime()), timezone.get_current_timezone())
 
             posts_per_days.append(float(self.filter(
                 pub_time__lte=day_time_end,