On Wed, 22 Sept 2021 at 22:05, Guy Harris via tz <tz@iana.org> wrote:
On Sep 22, 2021, at 3:52 AM, Stephen Colebourne via tz <tz@iana.org> wrote:
More broadly, different individuals, some representing organizations, have expressed different opinions on what they do or do not want from the tzdb data set. Some would like a full historical record of time zone data, others want stability, many I suspect have absolutely no interest whatsoever in pre-1970 data.
Presumably "stability" here includes "don't convert existing tzdb regions to links merely because they have the same 1970-and-later data" (putting them into the "don't merge" camp);
Yes.
does it also include "don't split existing tzdb regions due to the discovery that different parts of those regions had different pre-1970 data"? (Those who want a full historical record of time zone data would presumably want those existing regions split.)
Yes, personally I have no desire to split zones solely because of pre-1970 data. (The concept of splitting zones to get one per ISO country is one possible solution to the issue, but not one I am tied to if a different more acceptable rule can be derived) The question is really down to which of the post-1970 zones we do have are entitled to have pre-1970 data. Stephen