On 2025-07-21 12:44, Paul Eggert via tz wrote:
On 2025-07-21 00:39, Gent, R.H. van (Rob) wrote:
The most recent issue of the Annuaire on Gallica (2021) only lists information
for France
https://gallica.bnf.fr/ark:/12148/bpt6k9127672b/f52.item (with a sourced
list of day light savings from 1916 to 2020)
Thanks for the citation. It agrees with TZDB's Europe/Paris except for spring
1923, where things were chaotic and I see some evidence that TZDB is right and
the Annuaire is wrong. Perhaps someone who knows French could get to the bottom
of what happened to Parisian clocks in spring 1923.
Looked up laws from 1922 and 1923; the latter is after the Spring change so the
prior law should be in effect; but unsure they will be of much help:
Légifrance JORF n° 0073 du 15 mars 1922
https://www.legifrance.gouv.fr/jorf/jo/id/JORFCONT000000008324
Légifrance JORF n° 0139 du 25 mai 1923
https://www.legifrance.gouv.fr/jorf/jo/id/JORFCONT000000008416
(to download you have to answer an arithmetic challenge and sometimes numbers
are expressed in French words)
and attach Google translated extracts of each law (fixups only to «vingt-quatre
heures» times translated as 11pm! instead of 12pm) and verbatim JO extracts of
each law (with OCR fixups but messy layout /sic/).
In the meantime I adjusted comments to note the discrepancies by installing the
attached proposed patches. The first proposed patch updates related commentary
from Brazil's Divisão de Serviços da Hora (DISHO), which seems to have changed
its name and acronym. The second proposed patch notes the spring 1923
disagreement between TZDB and the Annuaire and cites the New York Times report
about Raymond Poincaré.
I was surprised to see that the 2020 Annuaire is the current edition. Have they
stopped publishing it?
The current annual Ephemerides for 2025 can be downloaded free, and you can buy
the current releases of «Guide de données astronomiques, Annuaire du Bureau des
longitudes» PDF from EDP Sciences for €12.99 (but they are not yet free from
Gallica):
https://laboutique.edpsciences.fr/produit/1442/9782759835959/guide-de-donnees-astronomiques-2025
ToC includes «L’heure en France»:
https://www.imcce.fr/content/medias/publications/publications-institutionnelles/TDM_GuideAstro2025.pdf
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher but when there is no more to cut
-- Antoine de Saint-Exupéry————————————————————————————————————————————————————————————————————
15 March 1922 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 2937
————————————————————————————————————————————————————————————————————
…
——————————⋄——————————
ACT repealing the advance of daylight saving time.
The Senate and the Chamber of Deputies have adopted,
The President of the Republic promulgates the law with the following
content:
Art. 1. — The law of February 6, 1920, on the advancement of time in
summer is repealed.
Art. 2. — However, and subject to the terms and conditions set out in
Articles 3 and 4, the legal time set by the law of March 9, 1911 will,
for the year 1922, be advanced sixty minutes from the last Saturday in
March at 11:00 p.m. to the first Saturday in October at 12:00 p.m.
Art. 3. — In municipalities that so request, prefects shall set the
opening and closing times of schools in such a way as to take into
account local customs and the interests of rural populations.
Art. 4. — The prefects shall set the opening and closing hours of fairs
and markets, as well as the timetables of local railways and bus
services, so as to ensure the provisioning of these fairs and markets
and the shipment of the products sold, taking into account the needs of
rural life.
This law, deliberated and adopted by the Senate and the Chamber of
Deputies, shall be executed as a law of the State.
Done in Paris, March 14, 1922.
A. MILLERAND.
By the President of the Republic:
The President of the Council, Minister of Foreign Affairs,
R. POINCARÉ.
The Keeper of the Seals, Minister of Justice,
LOUIS BARTHOU.
The Minister of the Interior,
MAURICE MAUNOURY.
The Minister of Labor,
ALBERT PEYRONNET.
The Minister of Public Works,
YVES LE TROCCQUER.
____________________________________________________________________
————————————————————————————————————————————————————————————————————
…
—————————————————————————————————————————————————————————————————————————
4962 OFFICIAL JOURNAL OF THE FRENCH REPUBLIC 25 May 1923
—————————————————————————————————————————————————————————————————————————
…
________________________________________
————————————————————————————————————————
O F F I C I A L P A R T
————————————————————————————————————————
ACT relating to the amendment of the legal time set by the Act of March 9, 1911.
The Senate and the Chamber of deputies have adopted,
The President of the Republic promulgates the law with the following content:
Art. 1. — Legal time, established by the law of March 9, 1911, shall
be advanced each year, subject to the terms and conditions set out in
Articles 2, 3, and 4, by sixty minutes, from the last Saturday in March
at 11:00 p.m. to the first Saturday in October at 12:00 p.m.
However, in the event of an agreement with neighboring allied nations,
the Government may postpone the first date to the third Saturday in
April and the second to the third Saturday in September.
Art. 2. — The Minister of Public Works shall make, on public interest
networks, any changes to the schedules of early and late-day trains,
workers' trains, and food trains, made necessary by the time change and
compatible with general railway service. It shall also make the
necessary changes to the opening and closing hours of low-speed train
stations.
Art. 3. — In municipalities that so request, prefects shall set the
opening and closing hours of schools in such a way as to take into
account local customs and the interests of rural populations.
Art. 4. — Prefects shall set the opening and closing hours of fairs
and markets, municipal halls and public markets, as well as the
timetables of local railways and bus services, in such a way as to
ensure the supply of these fairs and markets, as well as the shipment of
the products sold, taking into account the needs of rural life.
This law, deliberated and adopted by the Senate and the Chamber of
Deputies, shall be executed as a law of the State.
Done at Paris, May 24, 1923.
A. MILLERAND.
By the President of the Republic:
The President of the Council, Minister of Foreign Affairs,
R. POINCARÉ.
The Keeper of the Seals, Minister of Justice,
MAURICE COLRAT.
The Minister of the Interior,
MAURICE MAUNOURY.
The Minister of Labor,
ALBERT PEYRONNET.
The Minister of Public Education and Fine Arts,
LÉON BÉRARD.
The Minister of Hygiene, Social Welfare and Social Security,
PAUL STRAUSS.
The Minister of Public Works,
YVES LE TROQUER.
________________________________________
————————————————————————————————————————
…
————————————————————————————————————————————————————————————————————
15 Mars 1922 JOURNAL OFFICIEL DE LA RÉPUBLIQUE FRANÇAISE 2937
————————————————————————————————————————————————————————————————————
…
——————————⋄——————————
LOI abrogeant l'avance de l'heure en été.
Le Sénat et la Chambre des députés ont
adopté,
Le Président de la République promul‐
gue la loi dont la teneur suit:
Art. 1er. — La loi du 6 février 1920 sur
l’avance de l’heure en été est abrogée.
Art. 2. — Toutefois, et sous réserve des
modalités qui font l’objet des articles 3
et 4, l’heure légale fixée par la loi du
9 mars 1911 sera, pour l’aimée 1922, avan‐
cée de soixante minutes du dernier samedi
de mars à vingt-trois heures au premier
samedi d’octobre à vingt-quatre heures.
Art. 3. — Dans les communes qui en
feront la demande, les préfets fixeront les
heures d’ouverture et de fermeture des
écoles, de manière à tenir compte des ha‐
bitudes locales et des intérêts des popula‐
tions rurales.
Art. 4. — Les préfets fixeront les heures
d’ouverture et de fermeture des foires et
marchés, ainsi que les horaires des che‐
mins de fer d’intérêt local et des services
d’autobus, de façon à assurer le ravitail-
lement de ces foires et marchés ainsi que
l’expédition des produits vendus en tenant
compte des nécessités de la vie rurale.
La présente loi, délibérée et adoptée par
le Sénat et par la Chambre des députés,
sera exécutée comme loi de l’Etat.
Fait à Paris, le 14 mars 1922.
A. MILLERAND.
Par le Président de la République:
Le président du conseil,
ministre des affaires étrangères,
R. POINCARÉ.
Le garde des sceaux, ministre de la justice,
LOUIS BARTHOU.
Le ministre de l'intérieur,
MAURICE MAUNOURY.
Le ministre du travail,
ALBERT PEYRONNET.
Le ministre des travaux publics,
YVES LE TROCQUER.
____________________________________________
————————————————————————————————————————————
…
—————————————————————————————————————————————————————————————————————————————
4962 JOURNAL OFFICIEL DE LA RÉPUBLIQUE FRANÇAISE 25 Mai 1923
—————————————————————————————————————————————————————————————————————————————
…
___________________________________________________
———————————————————————————————————————————————————
P A R T I E O F F I C I E L L E
———————————————————————————————————————————————————
LOI relative à la modification de l'heure
légale fixée par la loi du 9 mars 1911.
Le Sénat et la Chambre des députés ont
adopté,
Le Président de la République promul-
gue la loi dont la teneur suit:
Art. 1er. — L'heure légale, fixée par la
loi du 9 mars 1911, sera, chaque année, et
sous réserve des modalités qui font l'ob-
jet des articles 2, 3 et 4, avancée de
soixante minutes, du dernier samedi de
mars, à vingt-trois heures, au premier sa-
medi d'octobre, à vingt-quatre heures.
Toutefois, en cas d'entente avec les na-
tions alliées voisines, le Gouvernement
pourra reporter la première date au troi-
sième samedi d'avril et la seconde au troi-
sième samedi de septembre.
Art. 2. — Le ministre des travaux pu-
blics devra apporter, sur les réseaux d'in-
térêt général, aux horaires des trains de
début et de fin de journée, d'ouvriers et
de denrées, les modifications rendues né-
cessaires par le changement d'heure et
compatibles avec le service général des
chemins de fer. II devra également appor-
ter aux heures d'ouverture et de fermeture
des gares de petite vitesse les modifica-
tions nécessaires.
Art. 3. — Dans les communes qui en fe-
ront la demande, les préfets fixèrent les
heures d'ouverture et de fermeture des
écoles, de manière à tenir compte des ha-
bitudes locales et des intérêts des popula-
tions rurales.
Art. 4. — Les préfets fixeront les heures
d'ouverture et de fermeture des foires et
marchés, halles et marchés publics com-
munaux, ainsi que les horaires des che-
mins de fer d'intérêt local et des services
d'autobus, de façon à assurer le ravitaille-
ment de ces foires et marchés, ainsi que
l'expédition des produits vendus, en te-
nant compte des nécessités de la vie ru-
rale.
La présente loi, délibérée et adoptée par
le Sénat et par la Chambre des députés,
sera exécutée comme loi de l'Etat.
Fait à Paris, le 24 mai 1923.
A. MILLERAND.
Par le Président de la République:
Le président du conseil, ministre des
affaires étrangères,
R. POINCARÉ.
Le garde des sceaux, ministre de la justice
MAURICE COLRAT.
Le ministre de l'intérieur,
MAURICE MAUNOURY.
Le ministre du travail,
ALBERT PEYRONNET.
Le ministre de l'instruction publique
et des beaux-arts,
LÉON BÉRARD.
Le ministre de l'hygiène, de l'assistance
et de la prévoyance sociales,
PAUL STRAUSS.
Le ministre des travaux publics,
YVES LE TROCQUER.
__________________________________________
——————————————————————————————————————————
…
