27 Time library [time]

27.10 Time zones [time.zone]

27.10.5 Class time_­zone [time.zone.timezone]

27.10.5.1 Overview [time.zone.overview]

namespace std::chrono {
  class time_zone {
  public:
    time_zone(time_zone&&) = default;
    time_zone& operator=(time_zone&&) = default;

    // unspecified additional constructors

    string_view name() const noexcept;

    template<class Duration> sys_info   get_info(const sys_time<Duration>& st)   const;
    template<class Duration> local_info get_info(const local_time<Duration>& tp) const;

    template<class Duration>
      sys_time<common_type_t<Duration, seconds>>
        to_sys(const local_time<Duration>& tp) const;

    template<class Duration>
      sys_time<common_type_t<Duration, seconds>>
        to_sys(const local_time<Duration>& tp, choose z) const;

    template<class Duration>
      local_time<common_type_t<Duration, seconds>>
        to_local(const sys_time<Duration>& tp) const;
  };
}
A time_­zone represents all time zone transitions for a specific geographic area.
time_­zone construction is unspecified, and performed as part of database initialization.
[Note
:
const time_­zone objects can be accessed via functions such as locate_­zone.
end note
]