How to make a timer on the server?

Question

linux

There is a server, the code is written in django. It is necessary to make it so that a timer is constantly running on the server, which, after the time has expired, runs the code from django. How to do this? If you can’t make it so that the code written in django runs, then you need a timer to at least send a command to run the script.

Answer 1

https://en.wikipedia.org/wiki/Cron
https://en.wikipedia.org/wiki/At_(Unix)