Is there any convenient class in the c++ libraries for working with dates?

Question

C++ / C#

Good time!
I am writing now under MFC, and I need a class for convenient work with dates. Need the possibility of increments by months, days; arithmetic operations with dates. And shift the responsibility for the correct dates to this class, so that as a result of some kind of gesture, an incorrect date does not turn out.
Perhaps this is some kind of wrapper over SYSTEMTIME.

Answer 1

And there is also a standard time_point. Comfortable, official, happy to take responsibility. :)
You can read it here:
en.cppreference.com/w/cpp/chrono/time_point

Answer 2

There is a self-written lib https://github.com/sitev/cjCore it has a self-written DateTime class... If necessary, I'll finish it for your needs...