[tz] [PATCH 1/1] Add UTC to zone tables

[Paul Eggert]

J William Piggott wrote:
> https://upload.wikimedia.org/wikipedia/commons/e/e8/Standard_World_Time_Zones.png
> ...
> The zone tables are a text representations of the same model

Actually, they're closer to this:

https://commons.wikimedia.org/wiki/File:Tz_world_mp-color.svg

although this isn't quite right either, e.g., for Ürümqi.

> You cannot set /etc/localtime to a posix TZ string.

You can remove /etc/localtime, giving UTC in all implementations I know of.  We 
could approximate this by having a new top-level selection for tzselect which 
acts like TZ='UTC0'. Although that wouldn't be quite the same thing, it might be 
good enough.