On 2019-03-05 02:49, rhiccarddo rcd wrote:
If the "normally" parameter used to define which city will serve as a reference for the time zone within the operating system is that of the most populous city, I ask: Why are there only seven locations randomly registered between cities and states, that exists even more than one city of the same state (state of Pará for example) among the seven currently registered, since Brazil has 27 states and 5570 municipalities and what, at least should be registered is the federal capital, whose name is Brasilia, reference for more than two hundred million Brazilians as official time?
The most populous city in a time zone whose clocks have agreed since 1970 may now also be in a different country, and once a city has been designated, is unlikely to be changed, unless there are changes in the history of the clocks; see: https://data.iana.org/time-zones/theory.html
The attached images serve to illustrate the above subject.
Those images are of user interfaces provided by some software suppliers. Please refer any issues with those interface displays to those software suppliers: that is their interface decision. Time zones provide a technical means of supporting time zones and maintaining the underlying information. Some suppliers use their own time zone sources and data, notably MS Windows OS, not that available at IANA, and some suppliers modify the IANA information for greater compatibility with their app and user bases. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised.