Some legal issues and validation and verification maybe? On 2/11/19 11:49, Steve Allen wrote:
On Tue 2019-02-05T14:52:41-0800 Kim Davies hath writ:
In short, ISO is a forum for standards development and unlikely to play any operational role in maintaining any speculated registry. This is perhaps akin to the split of responsibilities between the IETF and IANA. For comparison with the IANA tz data, the IATA has a database of time zones as an appendix to a document called SSIM. That consists of records of 390 ASCII characters in columns at a cost of $1329.00 USD https://www.iata.org/publications/store/Documents/Passenger%20Standards/spec...
SSIM is structured as the offsets currently in effect; history is not included. It is unclear to me why an airline would subscribe to this information rather than rely on IANA tz.
-- Steve Allen <sla@ucolick.org> WGS-84 (GPS) UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 https://www.ucolick.org/~sla/ Hgt +250 m