change low create_utc_filter to minus 2 days (#328)

Author: peterdudfield

nowcasting_datamodel/read/read.py

@@ -505,9 +505,9 @@ def get_forecast_values(
 
         # also filter on creation time, to speed up things
         if created_utc_limit is None:
-            created_utc_filter = start_datetime - timedelta(days=1)
+            created_utc_filter = start_datetime - timedelta(days=2)
         else:
-            created_utc_filter = min([created_utc_limit, start_datetime]) - timedelta(days=1)
+            created_utc_filter = min([created_utc_limit, start_datetime]) - timedelta(days=2)
 
         query = query.filter(model.created_utc >= created_utc_filter)
         query = query.filter(ForecastSQL.created_utc >= created_utc_filter)