The following code example is taken from the book
C++20 - The Complete Guide
by Nicolai M. Josuttis,
Leanpub, 2021
The code is licensed under a
Creative Commons Attribution 4.0 International License.
// raw code
#include "offsetzone.hpp"
#include <iostream>
int main()
{
using namespace std::literals; // for h and min suffix
// timezone with 3:45 offset:
OffsetZone p3_45{3h + 45min};
// convert now to timezone with offset:
auto now = std::chrono::system_clock::now();
std::chrono::zoned_time<decltype(now)::duration, OffsetZone*> zt{&p3_45, now};
std::cout << "UTC: " << zt.get_sys_time() << '\n';
std::cout << "+3:45: " << zt.get_local_time() << '\n';
std::cout << zt << '\n';
}