Want to run a command at specific times or dates? Setup a Cron job.

Log in to your control panel
Click on Webmin modules
Click on Scheduled Cron Jobs.
Click on Create a new scheduled cron job
Type in the command to run in the field " Command "

Choose when to run the command. 
A simple schedule or Advanced schedule.

When the Cron job is setup the command will run at the specified times.