[tz] uptodate data PS

Alois Treindl alois at astro.ch
Thu Nov 14 06:41:42 UTC 2019

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 
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.
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