On Feb 23, 2026, at 8:46 PM, Matt Johnson-Pint via tz <[email protected]> wrote:
> So all one has to do is convince their government to make a time change for
> even a single day, and that will warrant a new zone. 🤔
Yes.
The tzdd isn't a database of locations, it's a database of timezones, which are
defined as regions "whose clocks all agree about timestamps that occur after
the POSIX Epoch (1970-01-01 00:00:00 UTC)":
https://data.iana.org/time-zones/theory.html
A map from geographic locations to timezones:
https://data.iana.org/time-zones/tz-link.html#boundaries
can be useful when combined with the tzdb, but that's a separate project. A
table giving a list of cities in each timezone would also be useful, but,
again, that's a separate project.
Having a tzdb entry for every city of note is *not* a goal of the tzdb project.
