# std::chrono::month_day::month_day

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< cpp‎ | chrono‎ | month day

month_day() = default; | (1) | (since C++20)
constexpr month_day( const std::chrono::month& m, const std::chrono::day& d ) noexcept; | (2) | (since C++20)

Constructs a `month_day`.

1) Default constructor leaves the stored month and day values uninitialized.
2) Constructs a `month_day` that stores the month m and the day d.

### Notes

A more convenient way to construct a `month_day` is with operator/, e.g., std::chrono::April/1.

### Example

Run this code

    #include <chrono>
    #include <iostream>

    int main()
    {
        using namespace std::chrono_literals;
        constexpr auto mo_da = std::chrono::month_day(std::chrono::February, 29d);
        std::cout << static_cast<unsigned>(mo_da.day()) << '/'
                  << static_cast<unsigned>(mo_da.month()) << '\n';
    }

Output:

    29/2

### See also

operator/ (C++20) | conventional syntax for Gregorian calendar date creation (function)

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