Defined in header <chrono>
template <class CharT, class Traits, class Duration, class TimeZonePtr>
std::basic_ostream<CharT, Traits>&
operator<<( std::basic_ostream<CharT, Traits>& os,
            const std::chrono::zoned_time<Duration, TimeZonePtr>& tp );
(since C++20)

Outputs tp to the stream os, as if by std::format(os.getloc(), fmt, tp), where fmt is "{:L%F %T %Z}" if CharT is char, or L"{:L%F %T %Z}" if CharT is wchar_t.


os - output stream
tp - zoned_time to output

Return value



Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
P2372R3 C++20 the given locale was used by default L is needed to use the given locale

See also

specialization of std::formatter that formats a zoned_time according to the provided format
(class template specialization)

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