std::chrono::weekday_last::weekday_last
From cppreference.com
                    
                                        
                    < cpp | chrono | weekday last
                    
                                                            
                    | explicit constexpr weekday_last(const chrono::weekday& wd) noexcept; | (since C++20) | |
Constructs a weekday_last object storing the weekday wd.
Notes
A more convenient way to construct a weekday_last is with weekday's operator[], i.e., wd[std::chrono::last].