std::chrono::year_month::year,std::chrono::year_month::month(3)

NAME
std::chrono::year_month::year,std::chrono::year_month::month - std::chrono::year_month::year,std::chrono::year_month::month

Synopsis
   constexpr std::chrono::year year() const noexcept; (1) (since C++20)
   constexpr std::chrono::month month() const noexcept; (2) (since C++20)
   Retrieves the year and month values stored in this year_month object.

Return value
   1) Returns the stored std::chrono::year value.
   2) Returns the stored std::chrono::month value.

Example
// Run this code
 #include <chrono>
 #include <iostream>
 int main()
 {
     std::cout << std::boolalpha;
     constexpr auto ym{std::chrono::year(2021)/std::chrono::July};
     std::cout << (ym.year() == std::chrono::year(2021)) << ' ';
     std::cout << (ym.month() == std::chrono::month(7)) << '\n';
 }

Output:
 true true