# std::chrono::year_month_day_last::operator sys_days, std::chrono::year_month_day_last::operator local_days

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< cpp‎ | chrono‎ | year month day last

constexpr operator std::chrono::sys_days() const noexcept; | (1) | (since C++20)
constexpr explicit operator std::chrono::local_days() const noexcept; | (2) | (since C++20)

Converts `*this` to a std::chrono::time_point representing the same date as this `year_month_day_last`. This is equivalent to composing a `year_month_day` from `year()`, `month()` and `day()` and converting that `year_month_day` to the destination type.

1) Equivalent to std::chrono::sys_days(year()/month()/day())
2) Equivalent to std::chrono::local_days(year()/month()/day())

### Example

Run this code

    #include <array>
    #include <chrono>
    #include <iostream>
    #include <string_view>
    using namespace std::chrono;
    using namespace std::literals;

    int main()
    {
        constexpr std::array weekdays {
            "Sunday"sv, "Monday"sv, "Tuesday"sv, "Wednesday"sv,
            "Thursday"sv, "Friday"sv, "Saturday"sv
        };
        constexpr std::array quarters {
            "1st"sv, "2nd"sv, "3rd"sv, "4th"sv
        };
        constexpr auto mq {12 / 4}; // months per quarter
        constexpr year y {2021y};
        std::cout << "In " << static_cast<int>(y) << " the\n";
        for (auto q = 1; q < 5; ++q) {
            const auto ls = y / month(q * mq) / Sunday[last];
            const auto ld = y / month(q * mq) / last;
            // subtract last Sunday from last day for day of week
            const auto index = (sys_days(ld) - sys_days(ls)).count();
            std::cout << quarters[q - 1] << " quarter ends on a "
                      << weekdays[index] << (q < 4 ? ',':'.') << '\n';
        }
    }

Output:

    In 2021 the
    1st quarter ends on a Wednesday,
    2nd quarter ends on a Wednesday,
    3rd quarter ends on a Thursday,
    4th quarter ends on a Friday.

### See also

operator sys_days operator local_days | converts to a std::chrono::time_point (public member function of `std::chrono::year_month_day`)

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