std::chrono::month_day_last
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <chrono> | ||
| class month_day_last; | (since C++20) | |
The class month_day_last represents the last day of a specific month, of some yet to be specified year.
month_day_last is a TriviallyCopyable StandardLayoutType.
Member functions
| constructs a month_day_last(public member function) | |
| accesses the stored month (public member function) | |
| checks if the stored month is valid (public member function) | 
Nonmember functions
| compares two month_day_lastobjects(function) | |
| outputs a month_day_lastinto a stream(function template) |