Always make timezones aware even if UTC is disabled. Fixes #943.

celery/schedules.py

@@ -134,9 +134,7 @@ class schedule(object):
         return schedstate(is_due=False, next=remaining_s)
 
     def maybe_make_aware(self, dt):
-        if self.utc_enabled:
-            return maybe_make_aware(dt, self.tz)
-        return dt
+        return maybe_make_aware(dt, self.tz)
 
     def __repr__(self):
         return '<freq: {0.human_seconds}>'.format(self)