How to work with academic date and time?

Question

Python

While working on an online school project, or rather with a schedule, I ran into the following problem.
To work with the academic date and time, many crutches have been written with which it is getting harder and harder to work with time. Therefore, I decided to find a possible solution in the open spaces of the "Toaster".
By academic week, I mean a year that does not start on 01.01.YYYY, but on 09.01.YYYY

Answer 1

It was not necessary to write crutches, but to inherit from the same Calendar and override the necessary methods.