Thank you very much! This was really helpful and helped me figure out the major issue. I will start a new thread with the actual change necessary.
On Tue, Mar 18, 2025, 5:18 AM Jon Skeet <jonathan.sk...@gmail.com> wrote: > As an online alternative to enh's option, > https://nodatime.org/tzvalidate/generate can be used to generate a tzvalidate > format <https://github.com/nodatime/tzvalidate/blob/main/format.md> report. > The version can be specified as a query parameter, along with the zone, > start year and end year. For example: > > https://nodatime.org/tzvalidate/generate?version=2025a&zone=Asia/Tehran&startYear=1976&endYear=1982 > (I've extended the year range there just for clarity) > > That generates: > > Asia/Tehran > Initially: +03:30:00 standard +0330 > 1977-03-21 19:30:00Z +04:30:00 daylight +0430 > 1977-10-20 19:30:00Z +04:00:00 standard +04 > 1978-03-24 20:00:00Z +05:00:00 daylight +05 > 1978-08-04 20:00:00Z +04:00:00 standard +04 > 1978-12-31 20:00:00Z +03:30:00 standard +0330 > 1979-05-26 20:30:00Z +04:30:00 daylight +0430 > 1979-09-18 19:30:00Z +03:30:00 standard +0330 > 1980-03-20 20:30:00Z +04:30:00 daylight +0430 > 1980-09-22 19:30:00Z +03:30:00 standard +0330 > > (A quick scan suggests that's the same data as produced by zdump, which is > certainly what I'd expect...) > > > > On Tue, 18 Mar 2025 at 11:13, Roozbeh Pournader via tz <tz@iana.org> > wrote: > >> Can someone please kindly give me a dump of Asia/Tehran changes according >> to the latest tzdata for the years 1977-1981? >> >> I'm trying to piece together the newspaper bits and pieces and compare >> with the tz database, and it seems that there is clearly some transitions >> missing. Specifically, I find the following lines confusing: >> >> 4:00 Iran %z 1979 >> 3:30 Iran %z >> >> Does that mean we think Iran switched from UTC+4:00 to UTC+3:30 on Jan 1, >> 1979? >> >> Thanks a lot, >> Roozbeh >> >>
