[tz] DST existed in Portugal 1950

Alois Treindl alois at astro.ch
Sun Feb 7 21:58:05 UTC 2021


More information about the history of legal time in Portugal is here
http://oal.ul.pt/hora-legal/legislacao-sobre-a-hora-legal/

On 07.02.21 09:48, Alois Treindl wrote:
>
> TZ claims that in 1950 there was no DST in Portugal, zone Europe/Lisbon.
>
> While it was continuously applied between 1916 and 1965.
>
> The sources quoted in file europe are poor, it is only Whitman versus 
> Shanks/Pottenger.
>
> I have research online law collection for Portugal at https://dre.pt/ 
> and searched for 'hora de verão'.
> The results are sparse, but what I find on legal texts does not 
> indicate any interruption of the 1916 law for the year 1950.
>
> This Wikipedia page shows a list
> https://pt.wikipedia.org/wiki/Lista_de_per%C3%ADodos_em_que_vigorou_o_hor%C3%A1rio_de_ver%C3%A3o_em_Portugal
> and mentions the Decreto-Lei nº 37048 for 1949-1965.
>
> That law says 'first Sunday in April to first Sunday in October.
>
> No exception for 1950.
>
> Here is a list from the Lisbon astronomical observatory, which says 
> the same thing.
>
> http://oal.ul.pt/documentos/2018/01/hl1911a2018.pdf/
>
> I suggest that the rules for Europe/Lisbon should be updated accordingly.
>
>
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