Your World Clock Listing of place names and sort order Sucks
No offense, but the Selection Dialog Box for the World Clock setting sucks. It is NOT alphabetically sorted by Country/Region/City.
It appears to be sorted by Time Zones, but it appears to use some not so common terms for City/State Names.
You may wish to look at how the majority of World Time Clock Listings, Web Sites, and International Standards to see what Country/Continent/Region/State/City Names are used and redo your very confusing list.
It looks like your List is sorted by GMT +/- Time Zone Order. People do not think like that. Most people simply choose from a list of perhaps 50 or 100 Major City Names that their particular town/city is located in.
Here are Some Examples:
Toronto/New York/Miami -X GMT
Quebec/Cincinnati/New Orleans -y GMT
Chicago/Houston/Mexico City/Panama -z GMT
Seattle/San Francisco/Los Angeles/Tijuana/ -a GMT
Or:
US/AST/Atlantic/New York/Miami -X GMT
US/CST/Central/Cincinnati/Louisville/New Orleans -Y GMT
US/MST/Mountain/Denver/Phoenix -Z GMT
US/WST/Western/Seattle/San Francisco/Los Angeles/Tijuana -A GMT
MEX/Monterrey/ -Y GMT
MEX/Mexico City/ -X GMT
Or Continent:
North America/Toronto/New York/Miami/Buenos Aires -Y GMT
North America/Quebec/Chicago/New Orleans/Mexico City/Lima Peru -Z GMT
The point being the list should be created and sorted by common consumer/citizen perspective terms not in order by Time Zone and not with non-standard place names or mixed up geo boundaries.
If it was sorted by Major City Name or by Country and Major City Name, that would make it fast and easy to set it up right.
bajacaribe