if you don't want to use WS you can put your spl code into a .frag file under the site/mods/interp folder.
Then create a .bat/.sh file to run the frag using bop_cmd.
Use the task scheduler (if you using window) or a cron job to run that bat on your prefred schedule.
I think this is more simple and less consuming that trying to play with triggers and events directly into SMD
My 2 cents
/J