std::chrono::locate_zone

 

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Defined in header <chrono>
const std::chrono::time_zone* locate_zone( std::string_view tz_name );		(since C++20)

Convenience function for locating a time zone in the time zone database. Equivalent to std::chrono::get_tzdb().locate_zone(tz_name).

Parameters

tz_name

-

a time zone name to locate

Exceptions

std::runtime_error if the specified time zone cannot be found, or if this is the first reference to the time zone database and the time zone database cannot be initialized.

Notes

A call to this function that is the first reference to the time zone database will cause it to be initialized.

Example

Run this code

#include <chrono>
#include <iostream>
 
int main()
{
    try
    {
        for (const auto zone : {"Atlantic/Bermuda", "Alcatraz"})
            std::cout << std::chrono::locate_zone(zone)->name() << '\n';
    }
    catch(const std::runtime_error& ex)
    {
        std::cout << ex.what() << '\n';
    }
}

Possible output:

Atlantic/Bermuda
std::chrono::tzdb: cannot locate zone: Alcatraz

See also

locate_zone	locate a time zone with the given name (public member function of std::chrono::tzdb)
get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)	accesses and controls the global time zone database information (function)