[tz] Historical discrepancies for Italy.
Michael H Deckers
michael.h.deckers at googlemail.com
Mon Oct 24 19:32:41 UTC 2016
On 2016-10-24 15:59, Pierpaolo Bernardi wrote:
> This page http://www.renzobaldini.it/le-ore-legali-in-italia/ has
> still diferent data for 1944.
> It divides Italy in two, as there were effectively two governments at
> the time, north of gotic line
> (https://en.wikipedia.org/wiki/Gothic_Line) German controlled
> territory, official government RSI
> (https://en.wikipedia.org/wiki/Italian_Social_Republic), and south of
> gothic line, controlled by allied armies.
> Data for neither of the two zones agrees with INRIM, as far as I can
> tell from a cursory examination.
Yes, this has puzzled me. It turns out that the INRiM page is wrong
for both changes in 1944: the switch they give for summer time is
obeying C-Eur Rules and was applied in RSI but not south of the
the switch to winter time on Sep 17 went from 03 to 02 h, not from
02 to 01 h
as given by INRiM:
-Rule Italy 1944 only - Apr 3 2:00
+Rule Italy 1944 only - Apr 2 2:00
+Rule Salò 1944 only - Apr 3 2:00
-Rule Italy 1944 only - Sep 17 2:00
+Rule Italy 1944 only - Sep 17 3:00
+Rule Salò 1944 only - Oct 2 3:00
The correct switches applying in Rome (in the "regno") in 1944 can
up in [augusto.agid.gov.it/gazzette/index/download/id/1944062_P1S.pdf]
on page 374, DECRETO LEGISLATIVO LUOGOTENENZIALE 14 settembre 1944,
Visto il R. decreto-legge 29 marzo 1944, n. 92, col
quale l'ora normale è stata anticipata di sessanta mi-
nuti primi a partire dalle ore due del 2 aprile 1944;.
[Considering the royal law-decree 1944 March 29, n. 92, by which
standard time has been advanced by sixty minutes from
1944 April 2, two hours]
A partire dalle ore tre del giorno 17 settembre 1944 é
ripristinata l'ora normale.
[From three hours on the day 1944 September 17 standard
time is resumed.]
The text goes on to explain that the jump causes the hours
from 02 h until 03 h to be repeated, so that we can be certain that
a jump from 03h to 02 h is implied. One could even argue that
the text implies that 02:00 is assumed twice but 03:00 is not
(so that the time scale is a right continuous function of UT).
The decree was issued in Rome on 1944-09-14 (very short notice!)
and signed UMBERTO DI SAVOIA.
The corresponding switch in the RSI can be looked up in
on page 1512. It uses the C-Eur rules and is signed MUSSOLINI.
Nice history lesson!
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