[tz] About the core city of a tz region

David Patte ₯ dpatte at relativedata.com
Mon Jul 20 04:10:56 UTC 2015

I am curious about the protocol that tz uses to specify the name of each 
tz region.

Is the core city in a region always the most populous city in the tz region?

And what is done if a smaller city's population overtakes the named 
city? Is the zone renamed?

Also, since historical data (pre-1970) is now maintained only for the 
named city in a region, does it not make sense to use the population as 
of 1970, since the historical records actually affected more people at 
that time?

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