Post #24584 20 Dec 29, 2025, 12:23 UTC Exploring C++20 std::chrono - Calendar Typeshttps://www.cppstories.com/2025/chrono-calendar-types/https://redd.it/1pyk3lr@r_cpp C++ Stories Exploring C++20 std::chrono - Calendar Types Before C++20, <chrono> gave us a solid foundation for working with clocks, durations, and time points - but it didn’t really know anything about the civil calendar. If you needed to represent “March 15”, check whether a date is valid, compute “the third Monday…