std::chrono:: operator==,<=> (std::chrono::time_zone)

From cppreference.com
Utilities library
General utilities
Relational operators (deprecated in C++20)
Defined in header <chrono>
bool operator == ( const std:: chrono :: time_zone & x,
const std:: chrono :: time_zone & y ) noexcept ;
(1) (since C++20)
(2) (since C++20)

Compares the two time_zone values x and y by name.

The < , <= , > , >= , and != operators are synthesized from operator <=> and operator == respectively.

Return value

1) x. name ( ) == y. name ( )
2) x. name ( ) <=> y. name ( )