[tz] Question about historical TZData for North Carolina

Zoidsoft zoidsoft at gmail.com
Mon Dec 7 02:39:24 UTC 2015

Paul's right.  I've come to the conclusion that it is better to view any
data pre-1970 as a suggestion provided to the end user with warnings.
Expanding the data to include more questionable data just leads to a false
sense of security.

On Sun, Dec 6, 2015 at 4:49 PM, Paul Eggert <eggert at cs.ucla.edu> wrote:

> Clifford Ribaudo wrote:
>> I would like to propose that Zone Names be added for each state and which
>> at a minimum simply model the adoption of DST in 1966.
> As you know, the U.S. was a huge zoo of local time zone jurisdictions
> before 1970, and the same is true elsewhere in the world. The tzdata
> project considers most of this data to be out of scope, as we simply don't
> have the resources to maintain the large, unreliable database that would be
> needed to cover the world before 1970.
> That being said, there is a spot for out-of-scope data if you can find
> good sources for it. It's the file 'backzone', and it contains entries such
> as Europe/Guernsey that can be helpful for apps like yours, along with some
> other entries that are dicier. If you can come up with well-sourced data
> for North Carolina and propose a patch for 'backzone', we could slide it in
> there.  For info about doing that, please see:
> https://github.com/eggert/tz/blob/master/CONTRIBUTING
> https://github.com/eggert/tz/blob/master/Theory
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