std::chrono::operator<<(std::chrono::local_time) - cppreference.com (original) (raw)
template< class CharT, class Traits, class Duration >
std::basic_ostream<CharT, Traits>&
operator<<( std::basic_ostream<CharT, Traits>& os,
const std::chrono::local_time<Duration>& tp );
(since C++20)