I’ve written a number of posts about cron jobs becuase cron can be so useful in managing a site, plus cPanel makes it easy to set up and edit one.
Get your  job to include useful info in the email that it sends you.  You can notifiy yourself of success or failure, or post details about [...]

For smart security, put the script that your cron job runs in a directory above your /cgi-bin/ and /www/ or /public_html/ directories.
This is because if your script is in, or under, your /public_html/ directory, then it can be executed via a browser by anyone anytime.

You have an email inbox that is filled up. Or perhaps your “spam box” is filled up. You have so many emails to delete that it would take you forever to clear it out, page by page with NeoMail. One of my customers cried for help because of 35 MBs of spam that [...]

cPanel provides two interfaces that simplify setting up a cron job. This post discusses the “standard” interface because most people find it easier and faster to use than the advanced interface.
Two common problems people often encounter with cron jobs :

a server uses “military” time or a 24-hour clock rather than a 12-hour clock. For example, [...]

Automatically run scripts or commands for your site by setting up a
cron job.” (A bit of trivia: “cron” is short for chronograph.”) Your cron job will run on the server at times and intervals set by the job.
A cron job can automate a repetitive task. For example, a cron job can periodically delete all [...]