29 Time library [time]

29.11 Time zones [time.zone]

29.11.5 Class time_­zone [time.zone.timezone]

29.11.5.3 Non-member functions [time.zone.nonmembers]

bool operator==(const time_zone& x, const time_zone& y) noexcept;
Returns: x.name() == y.name().
strong_ordering operator<=>(const time_zone& x, const time_zone& y) noexcept;
Returns: x.name() <=> y.name().