diff --git a/src/g5505_utils.py b/src/g5505_utils.py
index 401c3d0..fda1bbb 100644
--- a/src/g5505_utils.py
+++ b/src/g5505_utils.py
@@ -101,16 +101,12 @@ def make_file_copy(source_file_path, output_folder_name : str = 'tmp_files'):
     return tmp_file_path
 
 def created_at():
-
     now = datetime.datetime.now()
-    # Populate now object with time zone infotmation obtained from the local system
+    # Populate now object with time zone information obtained from the local system
     now_tz_aware = now.astimezone()
     tz = now_tz_aware.strftime('%z')
-    #created_at = now_tz_aware.strftime('%Y-%m-%d_%H-%M-%S')+'_utcoffset_' + tz
-    #created_at = now_tz_aware.strftime('%Y-%m-%d')+'_UTC-OFST_' + tz
-    created_at = now_tz_aware.strftime('%Y-%m-%d %H:%M:%S') +'_UTC-OFST_' + tz
-    # Make created at timestamp with tz information
-    #created_at = now.isoformat()
+    # Replace colons in the time part of the timestamp with hyphens to make it file name friendly
+    created_at = now_tz_aware.strftime('%Y-%m-%d_%H-%M-%S') + '_UTC-OFST_' + tz
     return created_at
 
 def dataframe_to_np_structured_array(df: pd.DataFrame):