In your cPanel, you may notice that the existing cron jobs look like this:
* * * * * command(s)
| * (asterisk operator) | This means any value or always. If you selected an asterisk in the Hour field, then it means the task will be performed each hour. |
| , (comma operator) | This allows you to specify a list of values for repetition. |
| – (hyphen operator) | This allows you to specify a range of values. |
| / (slash operator) | This allows you to specify values that will be repeated over a certain interval between them |