diff --git a/src/bornhack/settings.py b/src/bornhack/settings.py
index 91590962..d2d0d465 100644
--- a/src/bornhack/settings.py
+++ b/src/bornhack/settings.py
@@ -63,7 +63,7 @@ STATICFILES_DIRS = [local_dir('static_src')]
 LANGUAGE_CODE = 'en-us'
 #USE_I18N = True
 #USE_L10N = True
-USE_TZ = True
+USE_TZ = False
 SHORT_DATE_FORMAT = 'd/m-Y'
 DATE_FORMAT = 'd/m-Y'
 DATETIME_FORMAT = 'd/m-Y H:i'
diff --git a/src/program/models.py b/src/program/models.py
index f7dd62d7..486021b2 100644
--- a/src/program/models.py
+++ b/src/program/models.py
@@ -732,8 +732,8 @@ class EventInstance(CampRelatedModel):
             'title': self.event.title,
             'slug': self.event.slug + '-' + str(self.id),
             'event_slug': self.event.slug,
-            'from': self.when.lower.astimezone().isoformat(),
-            'to': self.when.upper.astimezone().isoformat(),
+            'from': self.when.lower.isoformat(),
+            'to': self.when.upper.isoformat(),
             'url': str(self.event.get_absolute_url()),
             'id': self.id,
             'bg-color': self.event.event_type.color,