Hi, The CdT en the Anuuaire are still published each year
https://www.imcce.fr/publications/publications-institutionnelles/ but the most recent issues are not yet available online from Gallica. Rob van Gent -----Original Message----- From: Paul Eggert <[email protected]> Sent: Monday, 21 July, 2025 20:44 To: Gent, R.H. van (Rob) <[email protected]> Cc: Time zone mailing list <[email protected]> Subject: Re: [tz] Annuaire pour l'an ...., publié par le Bureau de Longitudes as a useful source for historical time zone changes CAUTION: This email originated from outside of Utrecht University. Do not click links or open attachments unless you recognize the sender and know the content is safe. 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://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgall > ica.bnf.fr%2Fark%3A%2F12148%2Fbpt6k9127672b%2Ff52.item&data=05%7C02%7C > R.H.vanGent%40uu.nl%7C8b9c69450b834d1133d708ddc8869278%7Cd72758a0a4464 > e0fa0aa4bf95a4a10e7%7C0%7C0%7C638887202608108289%7CUnknown%7CTWFpbGZsb > 3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjo > iTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Ed0wQ8xVgzIA5iG3MpNxTUutr > 2afgH5wGDTPChV8YkA%3D&reserved=0 (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. 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?
