[tz] DST changes in Hungary (full historical revision)

[Paul Eggert]

On 10/10/20 1:51 PM, Michael H Deckers via tz wrote:

>    • sources 
> [https://library.hungaricana.hu/hu/view/Delmagyarorszag_1981_01/?pg=79]
>      and 
> [https://library.hungaricana.hu/hu/view/DTT_KOZL_TanacsokKozlonye_1983/?pg=85]
>      seem to be inconsistent: both mention two different date for the switch back
>      in autumn (1981-09-26 and 1981-09-27 resp 1983-09-24 and 1983-09-25); I
>      could make sense of different dates for the steps forward (from 24 h to 01 h)
>      but not for the steps back.

That makes sense to me, when documenting a fall back from 01:00 to 24:00 the 
previous day.

Traditionally, midnight is in both adjacent days (or in neither day). Although 
the recent advent of computer-based clocks has promoted the currently-popular 
approach that midnight is part of the next day not the previous one, this 
approach surely hadn't taken hold in Hungary circa 1980.

I installed the attached to try to cover your other comments; thanks.
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