How do I execute a script on Heroku once a week?

Question

Python

Suppose I have an application hosted on Heroku. There are two scripts main.py and mailing.py
It is necessary that main.py is always executed, and mailing.py only on Saturdays, at 10 o'clock Moscow time. How to implement it?

Answer 1

https://devcenter.heroku.com/articles/scheduler
UPD: https://elements.heroku.com/addons/temporize