[tz] Portugal

[Alois Treindl]

Thank you for all the effort your made. Looks excellent.
It was worth it to wait for your profound analysis.

On 12.03.24 23:51, Tim Parenti wrote:
> (was: error Portugal 1980)
>
> On Thu, 29 Feb 2024 at 18:45, Alois Treindl via tz <tz at iana.org> wrote:
>
>     I have the impression that the document form the Lisbon
>     astronomical observatory, which I linked in my first post, is
>     quite reliable.
>
>     https://oal.ul.pt/hora-legal/legislacao-sobre-a-hora-legal/
>
> Yes, I had gotten the same impression when I began my research on this 
> in 2021, though I did find what appears to be at least one error in 
> even the Observatory's data based on the laws I inspected.
>
>      It names the law numbers, which are easy to find here
>     https://diariodarepublica.pt/dr/home
>
> Of course, but there are over 50 referenced decrees and ordinances, 
> and the Observatory's listing for continental Portugal didn't mention 
> the islands when we already knew there was some divergence from the 
> mainland in the 1980s.  Hence the call for assistance earlier.
>
> Thankfully, the Observatory has another page that lists the laws 
> currently in force for the mainland and the islands:
> https://oal.ul.pt/hora-legal/legislacao/
> Using those references, I was able to work backward through each 
> law's revocations and abrogations to a clearer point, constructing a 
> history for the islands.  (Without those footholds, I would have had 
> nowhere to even start.)
>
> Attached is a draft patch summing up the results of this research for 
> the Portuguese mainland, the islands, and some of its former overseas 
> territories.  It is not yet ready for merge, as it still needs a NEWS 
> item and commit message which I'll work on shortly, but more 
> importantly it needs review from the list.  There are a few 
> editorial/stylistic decisions I made, mostly to keep things 
> simpler, that could be changed if there are compelling reasons… but it 
> should mostly only need spot-checks for correctness, which hopefully 
> the added commentary will help with.
>
> The patch can also be reviewed (temporarily) on GitHub at:
> https://github.com/timparenti/tz-development/commit/0588a349673bfd5b4edadb3e5c66266854ebf08e
>
> --
> Tim Parenti
>
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