Update all dates to use utc, only in the template is it converted to british time.

app/main/views/dashboard.py

@@ -109,7 +109,7 @@ def weekly(service_id):
                 date_from=earliest_date
             )['data']
         ),
-        now=datetime.now()
+        now=datetime.utcnow()
     )
 
 
@@ -154,7 +154,7 @@ def add_rates_to(delivery_statistics):
             if delivery_statistics['sms_requested'] else 0
         ),
         week_end_datetime=parser.parse(
-            delivery_statistics.get('week_end', str(datetime.now()))
+            delivery_statistics.get('week_end', str(datetime.utcnow()))
         ),
         **delivery_statistics
     )

app/main/views/register.py

@@ -81,7 +81,7 @@ def _do_registration(form, service=None, send_sms=True, send_email=True):
 
         if send_sms:
             user_api_client.send_verify_code(user.id, 'sms', user.mobile_number)
-        session['expiry_date'] = str(datetime.now() + timedelta(hours=1))
+        session['expiry_date'] = str(datetime.utcnow() + timedelta(hours=1))
         session['user_details'] = {"email": user.email_address, "id": user.id}
         return True
     else: