Fix to catch summer/wintertime changes.

 - Legacy-Id: 4210

Author: levkowetz

ietf/meeting/models.py

@@ -44,7 +44,9 @@ def __unicode__(self):
             return self.number
 
     def time_zone_offset(self):
-        return pytz.timezone(self.time_zone).localize(datetime.datetime.combine(self.date, datetime.time(0, 0))).strftime("%z")
+        # Look at the time of 8 o'clock sunday, rather than 0h sunday, to get
+        # the right time after a possible summer/winter time change.
+        return pytz.timezone(self.time_zone).localize(datetime.datetime.combine(self.date, datetime.time(8, 0))).strftime("%z")
     def get_meeting_date (self,offset):
         return self.date + datetime.timedelta(days=offset)