[tz] About the core city of a tz region

Paul Eggert eggert at cs.ucla.edu
Mon Jul 20 21:36:53 UTC 2015

David Patte ₯ wrote:
> in 1970, and maybe much more recently, Montreal was clearly the larger city

The tz project didn't exist in 1970.  When adding cities we use current 
populations (not 1970 populations) to decide which city is larger, and as I 
understand it Toronto was (and still is) larger.

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