I have had a few requests for a bat file that can rename an zip archive as a scheduled task with the date that it renamed it. Below is the results of my effort since it worked so well I thought I would post it. This method actually does Month, Day, Year, though simply rearranging the three date blocks between the % % will give you what you want.

@E:
@cd "E:\Archive\bak_logs\"
ren Log_archive.zip %DATE:~4,2%-%DATE:~7,2%-%DATE:~10,4%-log.zip