PS: Also for your country Netherlands, the zone Europe/Amsterdam is not correct for all towns. We use 9 different tables to represent pre-1946 time zone history for Netherlands. The problem there is the different beginning and end of German occupation in Worldwars I and II, for some small pockets of Dutch area. On 09.11.19 12:51, Jean via tz wrote:
Hello, I hope i can ask this question here. I am the programmer of a popular freeware astrology program (planetdance). I have been using the data from the Olson database by means of a script using zdump on linux to get me data for a period of years for all timezones. The method works well enough but i find the data is not uptodate. For instance Morocco dropped it's DST in 2018 and zdump still happily reports DST for the next years. I have been looking for a way to get the uptodate Olson data into my program for many hours, also looked at the official way of compiling the data but i fear that is a bit too difficult for me. There are also commercial solutions but as i am not able nor willing to pay 500 / year to a company and a product i don't like so that's out of the question. So i'm asking for help here. Maybe there is some linux distribution that does have an uptodate tzdata? Or any other means?
ps. There are other problems, like the America/Chicago timezone which is notorious for giving false results for years before 1970 but i guess it's too much asked, i'd be happy if you could help me with uptodate data.