Comment 4 for bug 494145

Thank you for your reply.

> Is it possible to solve this glitch or to add every timezone available in the gnome-clock?
This is an decision from the GNOME developers not to include every timezone, but use only the minimum necessary time zone identifiers instead of all the historical names. For this part of your report, I would not consider it a bug. Also, except from displaying America/Toronto even if you are in Montreal, it should not have any difference on the behavior of the computer.

There was a bug in the original libgweather package that may come from the installation discs causing the weather not to appear for some cities, such as Montreal. This fix is included in libgweather 2.28.0-1ubuntu2. I am not sure what needs to be done to make it work if the weather location is set to Montreal before the package is updated. For more info, see the discussion for this bug: https://bugs.launchpad.net/libgweather/+bug/404616

Is it possible for you to use a Live CD and attempt to reproduce the bug? I am not able to see this with a currently working system. There is a possibility that the libgweather update fixes this bug after installation.