std::chrono::operator ==,!= (std::chrono::weekday_last)
From cppreference.com
                    
                                        
                    < cpp | chrono | weekday last
                    
                                                            
                    |   constexpr bool operator==(const std::chrono::weekday_last& x, const std::chrono::weekday_last& y) noexcept;  | 
(1) | (since C++20) | 
|   constexpr bool operator!=(const std::chrono::weekday_last& x, const std::chrono::weekday_last& y) noexcept;  | 
(2) | (since C++20) | 
Compares the two weekday_last objects x and y.
Return value
1) x.weekday() == y.weekday()
1) x.weekday() != y.weekday()