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std::chrono...ar_month_day(3) C++ Standard Libarystd::chrono...ar_month_day(3)

NAME
       std::chrono::year_month_day - std::chrono::year_month_day

Synopsis
	  Defined in header <chrono>
	  class	year_month_day;	      (since C++20)

	  The class year_month_day represents a	specific year, month, and day.
       It is a
	  field-based  time  point,  with  a  resolution of std::chrono::days.
       std::chrono::years-
	  and std::chrono::months-oriented arithmetic are supported  directly.
       An implicit
	  conversion	 to	and    from    std::chrono::sys_days	allows
       std::chrono::days-oriented
	  arithmetic to	be performed efficiently.

	  year_month_day is a TriviallyCopyable	StandardLayoutType.

Member functions
	  constructor	      constructs a year_month_day
			      (public member function)
	  operator+=	      modifies the time	point by some number of	months
       or years
	  operator-=	      (public member function)
	  year		      accesses the year, month,	and day	stored in this
       object
	  month		      (public member function)
	  day
	  operator sys_days   converts to a std::chrono::time_point
	  operator local_days (public member function)
	  ok		      checks if	the year_month_day represents a	 valid
       date
			      (public member function)

	  Nonmember functions

	  operator==  compares two year_month_day values
	  operator<=> (function)
	  (C++20)
	  operator+    adds  or	 subtracts a year_month_day and	some number of
       years or	months
	  operator-   (function)
	  (C++20)
	  operator<<  outputs a	year_month_day into a stream
	  (C++20)     (function	template)
	  from_stream parses a year_month_day from a stream according  to  the
       provided	format
	  (C++20)     (function	template)

Helper classes
	  std::formatter<std::chrono::year_month_day>  formatting  support for
       year_month_day
	  (C++20)				      (class template special-
       ization)
	  std::hash<std::chrono::year_month_day>      hash support for
	  (C++26)
       std::chrono::year_month_day
						      (class template special-
       ization)

Example
       // Run this code

	#include <chrono>
	#include <iostream>

	int main()
	{
	    const	 std::chrono::time_point	 now{std::chrono::sys-
       tem_clock::now()};

	    const				   std::chrono::year_month_day
       ymd{std::chrono::floor<std::chrono::days>(now)};

	    std::cout << "Current Year:	" <<  static_cast<int>(ymd.year())  <<
       ", "
			 "Month: " << static_cast<unsigned>(ymd.month()) << ",
       "
			 "Day: " << static_cast<unsigned>(ymd.day()) <<	"\n"
			 "ymd: " << ymd	<< '\n';
	}

Possible output:
	Current	Year: 2023, Month: 9, Day: 4
	ymd: 2023-09-04

http://cppreference.com		  2024.06.10	 std::chrono...ar_month_day(3)

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<https://man.freebsd.org/cgi/man.cgi?query=std::chrono::year_month_day&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

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