The clock applet has a neat feature which allows the user to keep track of the time in various timezones.  The user configures this by selecting the timezones from a list; he can then hover over the clock applet to see other timezones.  The name of a city associated with the timezone is displayed next to its time.

However, the practice of naming timezones after cities causes a great deal of confusion.  I need to keep track of the time in Houston, but there's no timezone named "Houston"; I have to use "Chicago" instead, and then later remember that "Chicago"=Houston when reading the widget's pop-up dialog.  This gets very annoying when one has a lot of timezones in one's list.

To solve this problem, it would be great to have feature to allow the user to create aliases or nicknames for timezones.  Therefore I can configure the clock to display "Houston" for the Chicago timezone and "Toronto" for the New York timezone without having to remember which city is in which arbitrarily-named timezone.

Note 1: This bug is a reincarnation of Bug 185337.

Note 2: I'm filing this issue against the Digital Clock component, though it probably also applies to the Analogue Clock.