[tz] What are the interfaces to the TZDB?

[Paul Eggert]

On 11/9/21 06:52, Tom Lane wrote:
> AFAIK, the only way to enumerate the available zones in a typical
> installation is to search the directory tree.

Although that was true years ago, since 2017c tzdb has distributed a 
file tzdata.zi that also works. For example, on my Fedora 35 host, the 
shell command:

awk '/^Z/ {print $2}' /usr/share/zoneinfo/tzdata.zi

lists a name for each distinct TZif file.