std::chrono::year_month_weekday_last::year, std::chrono::year_month_weekday_last::month, std::chrono::year_month_weekday_last::weekday, std::chrono::year_month_weekday_last::weekday_last
From cppreference.com
                    
                                        
                    < cpp | chrono | year month weekday last
                    
                                                            
                    | constexpr std::chrono::year year() const noexcept; | (since C++20) | |
| constexpr std::chrono::month month() const noexcept; | (since C++20) | |
| constexpr std::chrono::weekday weekday() const noexcept; | (since C++20) | |
| constexpr std::chrono::weekday_last weekday_last() const noexcept; | (since C++20) | |
Retrieves the field values stored in this year_month_weekday_last object.
Return values
1) Returns the stored std::chrono::year value.
2) Returns the stored std::chrono::month value.
3) Returns the stored std::chrono::weekday value.
4) std::chrono::weekday_last(weekday()).