diff --git a/src/data_integration_lib.py b/src/data_integration_lib.py
index 950f67c..9f54d2c 100644
--- a/src/data_integration_lib.py
+++ b/src/data_integration_lib.py
@@ -80,15 +80,15 @@ def integrate_data_sources(yaml_config_file_path, log_dir='logs/'):
 
             config_dict['experiment_startdate'] = min(datetime_augment_dict.keys())
             config_dict['experiment_enddate'] = max(datetime_augment_dict.keys())
-            startdate = config_dict['experiment_startdate']
-            enddate = config_dict['experiment_enddate']
+            startdate = config_dict['experiment_startdate'].strftime('%Y-%m-%d')
+            enddate = config_dict['experiment_enddate'].strftime('%Y-%m-%d')
             root_metadata_dict.update({'experiment_startdate': startdate,
                                        'experiment_enddate': enddate})
 
             date_str = f'{startdate}_{enddate}'
             output_filename_path = create_hdf5_file(date_str, select_file_keywords, root_metadata_dict)
     else:
-        startdate = config_dict['experiment_startdate']
+        startdate = config_dict['experiment_startdate'] 
         enddate = config_dict['experiment_enddate']
         root_metadata_dict.update({'experiment_startdate': startdate,
                                    'experiment_enddate': enddate})