std::chrono::operator ==,!=,<,<=,>,>= (std::chrono::year)
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | constexpr bool operator==(const std::chrono::year& x, const std::chrono::year& y) noexcept; | (1) | (since C++20) | 
| constexpr bool operator!=(const std::chrono::year& x, const std::chrono::year& y) noexcept; | (2) | (since C++20) | 
| constexpr bool operator< (const std::chrono::year& x, const std::chrono::year& y) noexcept; | (3) | (since C++20) | 
| constexpr bool operator<=(const std::chrono::year& x, const std::chrono::year& y) noexcept; | (4) | (since C++20) | 
| constexpr bool operator> (const std::chrono::year& x, const std::chrono::year& y) noexcept; | (5) | (since C++20) | 
| constexpr bool operator>=(const std::chrono::year& x, const std::chrono::year& y) noexcept; | (6) | (since C++20) | 
Compare the two std::chrono::year x and y.
Return value
1) int(x) == int(y)
2) int(x) != int(y)
3) int(x) <  int(y)
4) int(x) <= int(y)
5) int(x) >  int(y)
6) int(x) >= int(y)