[
  {
    "id": "babylonische-astronomische-tagebuecher-652-v-chr",
    "title": "Babylons ältestes astronomisches Tagebuch stammt von 652 v. Chr.",
    "sources": [
      {
        "url": "https://arxiv.org/pdf/1611.05197",
        "title": "Earliest Datable Records of Aurora-like Phenomena in the Astronomical Diaries from Babylonia (Hayakawa u. a.)",
        "publisher": "arXiv"
      },
      {
        "url": "https://archive.nyu.edu/bitstream/2451/60930/2/Jones%201992%20rev%20Sachs%20Hunger.pdf",
        "title": "Rezension zu Sachs/Hunger, Astronomical Diaries and Related Texts from Babylonia (Alexander Jones, Ancient Philosophy 12, 1992)",
        "publisher": "New York University, Faculty Digital Archive"
      },
      {
        "url": "https://www.livius.org/articles/concept/astronomical-diaries/",
        "title": "Astronomical Diaries",
        "publisher": "Livius.org"
      },
      {
        "url": "https://caeno.org/index.php/contents-1/1-introduction/2-regular-watching",
        "title": "2. Regular Watching",
        "publisher": "CAENO (Feat of Clay)"
      }
    ]
  },
  {
    "id": "beda-de-temporum-ratione-725",
    "title": "Beda vollendet 725 sein Lehrbuch über die Berechnung der Zeit",
    "sources": [
      {
        "url": "https://www.britannica.com/biography/Saint-Bede-the-Venerable",
        "title": "St. Bede the Venerable",
        "publisher": "Encyclopaedia Britannica"
      },
      {
        "url": "https://books.google.de/books/about/Bede_The_Reckoning_of_Time.html?id=yFsw-Vaup6sC&redir_esc=y",
        "title": "Bede: The Reckoning of Time (übers. Faith Wallis), Verlagsbeschreibung",
        "publisher": "Liverpool University Press, über Google Books"
      },
      {
        "url": "https://www.brepolsonline.net/doi/10.1484/J.VIATOR.2.300003",
        "title": "Historical Re-Collections: Rewriting the World Chronicle in Bede's De temporum ratione (Garipzanov, Rabin)",
        "publisher": "Viator, Brepols Publishers"
      },
      {
        "url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/jan2001.html",
        "title": "Bede Writings on the Calendar (Book of the Month, January 2001)",
        "publisher": "University of Glasgow Library, Special Collections"
      },
      {
        "url": "https://www.lindahall.org/about/news/scientist-of-the-day/venerable-bede/",
        "title": "Scientist of the Day – Venerable Bede (William B. Ashworth Jr.)",
        "publisher": "Linda Hall Library"
      },
      {
        "url": "https://codecs.vanhamel.nl/De_temporum_ratione_(Bede)",
        "title": "De temporum ratione (Bede)",
        "publisher": "CODECS, Online Database for Celtic Studies"
      },
      {
        "url": "https://books.openedition.org/irhis/348",
        "title": "Bede’s Scientific Works in the Carolingian Age",
        "publisher": "OpenEdition Books (Presses universitaires du Septentrion)"
      }
    ]
  },
  {
    "id": "cgpm-ende-der-schaltsekunde-2022",
    "title": "Die Generalkonferenz für Maß und Gewicht beschließt 2022 das Ende der Schaltsekunde",
    "sources": [
      {
        "url": "https://www.bipm.org/en/cgpm-2022/resolution-4",
        "title": "Resolution 4 of the 27th CGPM (2022) – On the use and future development of UTC",
        "publisher": "Bureau International des Poids et Mesures (BIPM)"
      },
      {
        "url": "https://phys.org/news/2022-11-global-timekeepers-vote-scrap.html",
        "title": "Global timekeepers vote to scrap leap second by 2035",
        "publisher": "phys.org (AFP)"
      },
      {
        "url": "https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=956869",
        "title": "A Proposal to Change the Leap-Second Adjustments to UTC (Judah Levine)",
        "publisher": "National Institute of Standards and Technology"
      },
      {
        "url": "https://www.itu.int/en/ITU-R/study-groups/rsg7/Documents/Seminar-Science-Services-RR-WRC27-2025/Presentations/4%20-%20Working%20Party%207A%20overview%E2%80%8B%E2%80%8B%20%28Joseph%20Achkar%29.pdf",
        "title": "ITU-R Working Party 7A – Time signals and frequency standard emissions (Joseph Achkar)",
        "publisher": "International Telecommunication Union"
      },
      {
        "url": "https://www.heise.de/news/Ab-2035-Ende-der-Schaltsekunde-beschlossen-Wissenschaft-soll-Loesung-finden-7348300.html",
        "title": "Ab 2035: Ende der Schaltsekunde beschlossen, Wissenschaft soll Lösung finden",
        "publisher": "heise online"
      },
      {
        "url": "https://www.spektrum.de/news/die-schaltsekunde-wird-abgeschafft/2079909",
        "title": "Die Schaltsekunde wird abgeschafft",
        "publisher": "Spektrum der Wissenschaft"
      },
      {
        "url": "https://www.theregister.com/offbeat/2026/09/06/time-lords-prepare-to-kick-leap-seconds-into-the-next-millennium/5294538",
        "title": "Time lords prepare to kick leap seconds into the next millennium",
        "publisher": "The Register (Lindsay Clark)"
      },
      {
        "url": "https://www.itu.int/en/ITU-R/terrestrial/fmd/Documents/WRC_23_Resolutions/E/RES_655(REV.WRC-23)-E.pdf",
        "title": "Resolution 655 (Rev. WRC-23)",
        "publisher": "International Telecommunication Union"
      }
    ]
  },
  {
    "id": "cgpm-kontinuierliche-utc-2026",
    "title": "CGPM 2026: UTC läuft ab 20. Mai 2027 ohne Schaltsekunden",
    "sources": [
      {
        "url": "https://www.bipm.org/en/cgpm-2026/resolution-5",
        "title": "Resolution 5 (2026): On the technical actions needed to ensure the continuity of UTC",
        "publisher": "BIPM"
      },
      {
        "url": "https://www.bipm.org/documents/d/guest/statement-cctf-president-cgpm-2026",
        "title": "Statement by the CCTF President, CGPM 2026",
        "publisher": "BIPM"
      },
      {
        "url": "https://www.bipm.org/en/cgpm-2026/resolution-4",
        "title": "Resolution 4 (2026): On the future definition of the second",
        "publisher": "BIPM"
      },
      {
        "url": "https://www.euronews.com/next/2026/10/16/global-timekeeping-rules-change-leap-second-scrapped-from-2027",
        "title": "Global timekeeping rules change: leap second scrapped from 2027",
        "publisher": "Euronews"
      },
      {
        "url": "https://news.cgtn.com/news/2026-10-17/Time-s-up-for-the-leap-second-1RjMg2Bw4FO/share_amp.html",
        "title": "Time's up for the leap second",
        "publisher": "CGTN"
      },
      {
        "url": "https://www.noovo.info/nouvelles/science-et-nature/article/quelle-heure-est-il-sur-la-lune-les-experts-se-penchent-sur-la-question/",
        "title": "Quelle heure est-il sur la Lune? Les experts se penchent sur la question (AFP)",
        "publisher": "Noovo (AFP)"
      },
      {
        "url": "https://www.bipm.org/en/-/2026-10-15-cgpm-2026-press-conference-announcements-and-media-resources",
        "title": "CGPM 2026: Press conference announcements and media resources",
        "publisher": "BIPM"
      }
    ]
  },
  {
    "id": "chemie-nobelpreis-kagan-soai-2026",
    "title": "Chemie-Nobelpreis 2026 geht an Henri Kagan und Kenso Soai",
    "sources": [
      {
        "url": "https://www.nobelprize.org/prizes/chemistry/2026/press-release/",
        "title": "Press release: The Nobel Prize in Chemistry 2026",
        "publisher": "Royal Swedish Academy of Sciences (NobelPrize.org)"
      },
      {
        "url": "https://www.wunc.org/2026-10-07/scientists-win-chemistry-nobel-for-discoveries-about-mirrored-molecules-that-led-to-many-drugs",
        "title": "Scientists win chemistry Nobel for discoveries about mirrored molecules that led to many drugs (AP)",
        "publisher": "WUNC (Associated Press)"
      },
      {
        "url": "https://www.genengnews.com/topics/drug-discovery/kagan-soai-win-2026-nobel-prize-in-chemistry-for-discoveries-related-to-asymmetric-organic-synthesis/",
        "title": "Kagan, Soai Win 2026 Nobel Prize in Chemistry for Discoveries Related to Asymmetric Organic Synthesis",
        "publisher": "GEN – Genetic Engineering & Biotechnology News"
      },
      {
        "url": "https://www.khaleejtimes.com/world/henri-kagan-kenso-soai-win-2026-nobel-chemistry-prize",
        "title": "Henri Kagan, Kenso Soai win 2026 Nobel chemistry prize (Reuters)",
        "publisher": "Khaleej Times (Reuters)"
      }
    ]
  },
  {
    "id": "dekret-von-kanopus-238-v-chr",
    "title": "Dekret von Kanopus schreibt 238 v. Chr. einen Schalttag vor",
    "sources": [
      {
        "url": "https://www.nationalgeographic.com/premium/article/leap-day-year-canopus-decree-egypt-tanis-stele",
        "title": "This 2,200-year-old slab bears the world's first mention of leap year (Indi Bains)",
        "publisher": "National Geographic"
      },
      {
        "url": "https://ssea2020.thessea.org/images/SSEA_assets/newsletters/2010_2011_3.pdf",
        "title": "SSEA Newsletter 2010–2011, Nr. 3",
        "publisher": "Society for the Study of Egyptian Antiquities"
      },
      {
        "url": "https://www.upo.es/investiga/processionsandempire/trilingual-decree-of-the-priests-gathered-in-canopus-in-honour-of-ptolemy-iii-euergetes-and-berenice/",
        "title": "Trilingual decree of the priests gathered in Canopus in honour of Ptolemy III Euergetes and Berenice (2nd version)",
        "publisher": "Universidad Pablo de Olavide (Emperors and Kings in procession)"
      },
      {
        "url": "https://archaeologymag.com/2025/09/complete-copy-of-the-canopus-decree/",
        "title": "Complete copy of the Canopus Decree unearthed in Egypt after 150 years (Dario Radley)",
        "publisher": "Archaeology News Online Magazine"
      },
      {
        "url": "https://archive.nyu.edu/jspui/bitstream/2451/48023/2/Jones%202000%20Calendrica%20II%20Date%20equations%20ZPE.pdf",
        "title": "Calendrica II: Date Equations from the Reign of Augustus",
        "publisher": "Zeitschrift für Papyrologie und Epigraphik 129 (Alexander Jones), NYU Faculty Digital Archive"
      }
    ]
  },
  {
    "id": "dionysius-exiguus-anno-domini-525",
    "title": "Dionysius Exiguus zählt die Jahre ab Christus statt ab Diokletian",
    "sources": [
      {
        "url": "https://en.wikipedia.org/wiki/Anno_Domini",
        "title": "Anno Domini",
        "publisher": "Wikipedia"
      },
      {
        "url": "https://bmcr.brynmawr.edu/2009/2009.05.57",
        "title": "Rezension zu Alden A. Mosshammer, The Easter Computus and the Origins of the Christian Era (BMCR 2009.05.57)",
        "publisher": "Bryn Mawr Classical Review"
      },
      {
        "url": "https://www.encyclopedia.com/people/history/historians-european-biographies/dionysius-exiguus",
        "title": "Dionysius Exiguus",
        "publisher": "Encyclopedia.com"
      },
      {
        "url": "https://sarahemilybond.com/2018/03/31/anno-domini-computational-analysis-antisemitism-and-the-early-christian-debate-over-easter/",
        "title": "Anno Domini: Computational Analysis, Antisemitism, and the Early Christian Debate Over Easter",
        "publisher": "Sarah E. Bond"
      },
      {
        "url": "https://www.ebsco.com/research-starters/biography/dionysius-exiguus/",
        "title": "Dionysius Exiguus",
        "publisher": "EBSCO Research Starters"
      }
    ]
  },
  {
    "id": "dondi-astrarium-1380",
    "title": "Dondis Astrarium zeigt Stunden und den Lauf von sieben Planeten",
    "sources": [
      {
        "url": "https://www.lindahall.org/about/news/scientist-of-the-day/giovanni-dondi/",
        "title": "Giovanni Dondi (Scientist of the Day)",
        "publisher": "Linda Hall Library"
      },
      {
        "url": "https://heritage.unipd.it/en/storia/giovanni-dondi-dallorologio/",
        "title": "Giovanni Dondi dall'Orologio",
        "publisher": "Università degli Studi di Padova"
      },
      {
        "url": "https://brunelleschi.imss.fi.it/galileopalazzostrozzi/object/GiovanniDeDondisAstrariumWorkingModel.html",
        "title": "Giovanni de' Dondi's astrarium – Working model",
        "publisher": "Museo Galileo (Istituto e Museo di Storia della Scienza)"
      },
      {
        "url": "https://artsandculture.google.com/story/0gURs225ZTyrJA",
        "title": "Giovanni Dondi's astrarium",
        "publisher": "Museo Nazionale della Scienza e della Tecnologia Leonardo da Vinci (Google Arts & Culture)"
      }
    ]
  },
  {
    "id": "encyclopedie-1751",
    "title": "Der erste Band der Encyclopédie erscheint",
    "sources": [
      {
        "url": "https://www.herodote.net/1er_juillet_1751-evenement-17510701.php",
        "title": "1er juillet 1751 — Naissance tumultueuse de l'Encyclopédie",
        "publisher": "Herodote.net"
      },
      {
        "url": "https://www.americanrevolutioninstitute.org/masterpieces-in-detail/diderot-encyclopedie/",
        "title": "The Diderot Encyclopédie",
        "publisher": "American Revolution Institute"
      },
      {
        "url": "https://encyclopedie.uchicago.edu/",
        "title": "ARTFL Encyclopédie",
        "publisher": "ARTFL Project, University of Chicago"
      },
      {
        "url": "https://www.ebsco.com/research-starters/biography/jean-le-rond-dalembert",
        "title": "Jean le Rond d'Alembert — Biography",
        "publisher": "EBSCO Research Starters"
      }
    ]
  },
  {
    "id": "gregorianischer-kalender-1582",
    "title": "Auf den 4. Oktober 1582 folgt der 15. Oktober",
    "sources": [
      {
        "url": "https://www.lindahall.org/about/news/scientist-of-the-day/pope-gregory-xiii/",
        "title": "Pope Gregory XIII (Scientist of the Day)",
        "publisher": "Linda Hall Library"
      },
      {
        "url": "https://encyclopediavirginia.org/entries/the-gregorian-calendar/",
        "title": "The Gregorian Calendar",
        "publisher": "Encyclopedia Virginia"
      },
      {
        "url": "https://aa.usno.navy.mil/faq/calendars",
        "title": "Calendars and their History",
        "publisher": "United States Naval Observatory"
      },
      {
        "url": "https://www.ebsco.com/research-starters/history/gregory-xiii-reforms-calendar",
        "title": "Gregory XIII Reforms the Calendar",
        "publisher": "EBSCO Research Starters"
      }
    ]
  },
  {
    "id": "himmelsscheibe-nebra-1600-v-chr",
    "title": "Himmelsscheibe von Nebra wird um 1600 v. Chr. vergraben",
    "sources": [
      {
        "url": "https://www.unesco.org/en/memory-world/nebra-sky-disc",
        "title": "Nebra Sky Disc",
        "publisher": "UNESCO Memory of the World"
      },
      {
        "url": "https://austriaca.at/0xc1aa5576%200x003bfe98.pdf",
        "title": "Why the Nebra Sky Disc Dates to the Early Bronze Age (Pernicka u. a., Archaeologia Austriaca 104, 2020)",
        "publisher": "Österreichische Akademie der Wissenschaften"
      },
      {
        "url": "https://www.lda-lsa.de/presse-und-oeffentlichkeitsarbeit/presseinformationen/archiv-der-presseinformationen/2020/131120-datierung-himmelsscheibe",
        "title": "Wissenschaftskrimi gelöst: Die Himmelsscheibe von Nebra stammt aus der frühen Bronzezeit",
        "publisher": "Landesamt für Denkmalpflege und Archäologie Sachsen-Anhalt"
      },
      {
        "url": "https://www.bs.ch/medienmitteilungen/2003-himmelsscheibe-von-nebra",
        "title": "Himmelsscheibe von Nebra (Medienmitteilung der Staatsanwaltschaft)",
        "publisher": "Kanton Basel-Stadt"
      },
      {
        "url": "https://www.landesmuseum-vorgeschichte.de/himmelsscheibe-von-nebra/das-universum-der-himmelsscheibe",
        "title": "Das Universum der Himmelsscheibe",
        "publisher": "Landesmuseum für Vorgeschichte Halle"
      }
    ]
  },
  {
    "id": "julianischer-kalender-45-v-chr",
    "title": "Caesars Kalender gilt ab dem 1. Januar 45 v. Chr.",
    "sources": [
      {
        "url": "https://www.ebsco.com/research-starters/history/sosigenes",
        "title": "Sosigenes (Research Starter)",
        "publisher": "EBSCO"
      },
      {
        "url": "https://penelope.uchicago.edu/~grout/encyclopaedia_Romana/calendar/romancalendar.html",
        "title": "Roman Calendar",
        "publisher": "Encyclopaedia Romana (James Grout), University of Chicago"
      },
      {
        "url": "https://robinfo.oma.be/en/astro-info/calendar/the-roman-and-julian-calendars/",
        "title": "The Roman and Julian calendars",
        "publisher": "Royal Observatory of Belgium"
      },
      {
        "url": "https://www.earthmagazine.org/article/geologic-column-beginning-time-we-know-it/",
        "title": "Geologic Column: The beginning of \"time\" as we know it",
        "publisher": "EARTH Magazine (American Geosciences Institute)"
      },
      {
        "url": "https://dictionary.obspm.fr/terms/julian-calendar/",
        "title": "Julian calendar (Etymological Dictionary of Astronomy and Astrophysics)",
        "publisher": "Observatoire de Paris"
      },
      {
        "url": "https://sk.sagepub.com/ency/edvol/embed/time/chpt/calendar-julian",
        "title": "Calendar, Julian (Encyclopedia of Time, hg. H. James Birx)",
        "publisher": "SAGE Knowledge"
      },
      {
        "url": "https://www.britannica.com/science/Julian-calendar",
        "title": "Julian calendar",
        "publisher": "Encyclopaedia Britannica"
      }
    ]
  },
  {
    "id": "karnak-wasseruhr-14-jh-v-chr",
    "title": "Wasseruhr von Karnak zeigt im 14. Jh. v. Chr. die Nachtstunden",
    "sources": [
      {
        "url": "https://aea.mcmaster.ca/index.php/en/database/water-clocks/wco-1-amenhotep-iii-karnak",
        "title": "WCO 1 Amenhotep III Karnak",
        "publisher": "Ancient Egyptian Astronomy, McMaster University"
      },
      {
        "url": "https://edoc.unibas.ch/80750",
        "title": "The Karnak Clepsydra: Votive Gift or Utilitarian Object? (Gautschy)",
        "publisher": "Universität Basel (edoc)"
      },
      {
        "url": "https://arxiv.org/pdf/1504.03905",
        "title": "The water clock of the Bronze Age (Northern Black Sea Coast)",
        "publisher": "arXiv"
      },
      {
        "url": "https://egypt-museum.com/clepsydra-of-karnak/",
        "title": "Clepsydra of Karnak – The Oldest Known Water Clock",
        "publisher": "Egypt Museum (egypt-museum.com)"
      },
      {
        "url": "https://www.ancientworldmagazine.com/articles/water-clocks",
        "title": "Water clocks (Josho Brouwers)",
        "publisher": "Ancient World Magazine"
      }
    ]
  },
  {
    "id": "meridiankonferenz-1884",
    "title": "Die Meridiankonferenz legt Greenwich als Nullmeridian fest",
    "sources": [
      {
        "url": "https://www.gutenberg.org/files/17759/17759-h/17759-h.htm",
        "title": "International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day (Protokoll)",
        "publisher": "Project Gutenberg"
      },
      {
        "url": "https://www.royalobservatorygreenwich.org/articles.php?article=1240",
        "title": "The adoption of a Prime Meridian and the International Meridian Conference of 1884",
        "publisher": "Royal Observatory Greenwich"
      },
      {
        "url": "https://moneyweek.com/351598/13-october-1884-greenwich-adopted-as-the-prime-meridian",
        "title": "13 October 1884: Greenwich adopted as the prime meridian",
        "publisher": "MoneyWeek"
      },
      {
        "url": "https://www.thegreenwichmeridian.org/tgm/articles.php?article=10",
        "title": "Catalogue of Greenwich Meridian markers: International Meridian Conference (1884)",
        "publisher": "The Greenwich Meridian"
      }
    ]
  },
  {
    "id": "meter-kilogramm-archiv-1799",
    "title": "Meter und Kilogramm aus Platin kommen 1799 ins Archiv",
    "sources": [
      {
        "url": "https://www.nist.gov/si-redefinition/kilogram/kilogram-past",
        "title": "Kilogram: The Past",
        "publisher": "National Institute of Standards and Technology (NIST)"
      },
      {
        "url": "https://metrologie-francaise.lne.fr/en/metrology/history-units",
        "title": "The historical evolution of units",
        "publisher": "Laboratoire national de métrologie et d'essais (LNE)"
      },
      {
        "url": "https://observatoiredeparis.psl.eu/10-decembre-1799-bicentenaire-du-systeme-metrique.html",
        "title": "10 décembre 1799 : bicentenaire du Système métrique décimal",
        "publisher": "Observatoire de Paris"
      },
      {
        "url": "https://observatoiredeparis.psl.eu/IMG/article_PDF/Le-mtre-mesure-rpublicaine_a2988.pdf",
        "title": "Le mètre : mesure républicaine",
        "publisher": "Observatoire de Paris"
      }
    ]
  },
  {
    "id": "meterkonvention-1875",
    "title": "Meterkonvention: 17 Staaten gründen 1875 in Paris das BIPM",
    "sources": [
      {
        "url": "https://www.bipm.org/en/metre-convention",
        "title": "Metre Convention",
        "publisher": "Bureau international des poids et mesures (BIPM)"
      },
      {
        "url": "https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-FR.pdf",
        "title": "Le Système international d'unités (SI), 9e édition: Le BIPM et la Convention du Mètre",
        "publisher": "Bureau international des poids et mesures (BIPM)"
      },
      {
        "url": "https://www.bipm.org/en/committees/cg/cgpm/1-1889/resolution-",
        "title": "Declaration of the 1st CGPM (1889): Sanction of the international prototypes of the metre and the kilogram",
        "publisher": "Bureau international des poids et mesures (BIPM)"
      },
      {
        "url": "https://ukma.org.uk/what-is-metric/first-international-prototypes/",
        "title": "The first international prototypes",
        "publisher": "UK Metric Association"
      },
      {
        "url": "https://www.heise.de/en/background/Numbers-please-The-three-original-German-meters-10389937.html",
        "title": "Numbers, please! The three original German meters",
        "publisher": "heise online"
      },
      {
        "url": "https://www.ris.bka.gv.at/Dokumente/Bundesnormen/NOR40096909/NOR40096909.html",
        "title": "Internationale Meter-Convention, RGBl. Nr. 20/1876",
        "publisher": "Rechtsinformationssystem des Bundes (RIS), Österreich"
      },
      {
        "url": "https://www.bipm.org/en/bipm-anniversary",
        "title": "150th anniversary",
        "publisher": "Bureau international des poids et mesures (BIPM)"
      }
    ]
  },
  {
    "id": "meton-zyklus-432-v-chr",
    "title": "Meton macht 432 v. Chr. in Athen den 19-Jahres-Zyklus bekannt",
    "sources": [
      {
        "url": "https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/meton",
        "title": "Meton (Complete Dictionary of Scientific Biography, G. J. Toomer)",
        "publisher": "Encyclopedia.com (Gale)"
      },
      {
        "url": "https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Diodorus_Siculus/12B*.html",
        "title": "Diodorus Siculus, Library of History, Buch XII (Loeb, Übers. C. H. Oldfather)",
        "publisher": "LacusCurtius, University of Chicago"
      },
      {
        "url": "https://cse.buffalo.edu/faculty/rapaport/Papers/Papers.by.Others/ComprHist/freethetal06-antikythera.pdf",
        "title": "Decoding the ancient Greek astronomical calculator known as the Antikythera Mechanism (Freeth et al., Nature 444, 2006)",
        "publisher": "Nature (Kopie der University at Buffalo)"
      },
      {
        "url": "https://www.newadvent.org/cathen/05480b.htm",
        "title": "Epact (Catholic Encyclopedia)",
        "publisher": "New Advent"
      },
      {
        "url": "https://pwg.gsfc.nasa.gov/stargaze/Sjewcale.htm",
        "title": "The Jewish calendar (Stargazers, David P. Stern)",
        "publisher": "NASA Goddard Space Flight Center"
      },
      {
        "url": "https://cojs.org/calendars-_francesca_rochberg-halton_and_james_c-_vanderkam-_anchor_bible_dictionary_-ed-_david_noel_freedman-_doubleday-_new_york_1992/",
        "title": "Calendars (Ancient Near East), F. Rochberg-Halton, Anchor Bible Dictionary (1992)",
        "publisher": "Center for Online Judaic Studies (Wiedergabe des Anchor Bible Dictionary, Doubleday)"
      }
    ]
  },
  {
    "id": "nist-zeit-auf-dem-mars-2025",
    "title": "Uhren auf dem Mars gehen 477 Mikrosekunden am Tag schneller",
    "sources": [
      {
        "url": "https://iopscience.iop.org/article/10.3847/1538-3881/ae0c16",
        "title": "A Comparative Study of Time on Mars with Lunar and Terrestrial Clocks (Ashby, Patla)",
        "publisher": "The Astronomical Journal (IOP Publishing)"
      },
      {
        "url": "https://www.nist.gov/news-events/news/2025/12/what-time-it-mars-nist-physicists-have-answer",
        "title": "What Time Is It on Mars? NIST Physicists Have the Answer.",
        "publisher": "NIST"
      },
      {
        "url": "https://www.yahoo.com/news/articles/clocks-mars-tick-faster-study-201700320.html",
        "title": "Clocks On Mars Tick Faster, And This Study Has A Theory Why",
        "publisher": "Yahoo News (Originalverlag nicht angegeben)"
      }
    ]
  },
  {
    "id": "optische-uhren-vergleich-sechs-laender-2025",
    "title": "Optische Atomuhren: zehn Uhren in sechs Ländern verglichen",
    "sources": [
      {
        "url": "https://arxiv.org/pdf/2505.06763",
        "title": "Coordinated international comparisons between optical clocks connected via fiber and satellite links (Lindvall, Pizzocaro, Godun et al., Preprint)",
        "publisher": "arXiv"
      },
      {
        "url": "https://www.optica.org/about/newsroom/news_releases/2025/unprecedented_optical_clock_network_lays_groundwork_for_redefining_the_second/",
        "title": "Unprecedented optical clock network lays groundwork for redefining the second",
        "publisher": "Optica (Pressemitteilung)"
      },
      {
        "url": "https://physicsworld.com/a/new-definition-of-second-ticks-closer-after-international-optical-clock-comparison/",
        "title": "New definition of second ticks closer after international optical-clock comparison",
        "publisher": "Physics World (IOP Publishing)"
      },
      {
        "url": "https://www.vttresearch.com/en/news-and-ideas/towards-redefining-second-optical-atomic-clocks",
        "title": "Towards redefining the second with optical atomic clocks",
        "publisher": "VTT Technical Research Centre of Finland"
      }
    ]
  },
  {
    "id": "philosophical-transactions-1665",
    "title": "Philosophical Transactions: Aus Briefwechseln wird Zeitschrift",
    "sources": [
      {
        "url": "https://royalsociety.org/journals/publishing-activities/publishing350/history-philosophical-transactions/",
        "title": "History of Philosophical Transactions",
        "publisher": "The Royal Society"
      },
      {
        "url": "https://www.lindahall.org/about/news/scientist-of-the-day/henry-oldenburg/",
        "title": "Henry Oldenburg — Scientist of the Day",
        "publisher": "Linda Hall Library of Science, Engineering & Technology"
      },
      {
        "url": "https://www.the-scientist.com/scientific-publishing-1665-36010",
        "title": "Scientific Publishing, 1665",
        "publisher": "The Scientist"
      }
    ]
  },
  {
    "id": "physik-nobelpreis-halzen-2026",
    "title": "Physik-Nobelpreis 2026 geht an Francis Halzen für IceCube",
    "sources": [
      {
        "url": "https://www.nobelprize.org/prizes/physics/2026/press-release/",
        "title": "Press release: The Nobel Prize in Physics 2026",
        "publisher": "Royal Swedish Academy of Sciences (NobelPrize.org)"
      },
      {
        "url": "https://www.dailymaverick.co.za/article/2026-10-06-francis-halzen-wins-2026-nobel-prize-in-physics/",
        "title": "Francis Halzen wins 2026 Nobel Prize in Physics (Reuters)",
        "publisher": "Daily Maverick (Reuters)"
      },
      {
        "url": "https://physicsworld.com/a/francis-halzen-wins-nobel-prize-in-physics/",
        "title": "Francis Halzen wins Nobel Prize in Physics",
        "publisher": "Physics World (IOP Publishing)"
      },
      {
        "url": "https://www.aljazeera.com/news/2026/10/6/francis-halzen-wins-nobel-prize-in-physics-for-work-on-ghost-particles",
        "title": "Francis Halzen wins Nobel Prize in Physics for work on ‘ghost particles’",
        "publisher": "Al Jazeera (mit AP und Reuters)"
      },
      {
        "url": "https://icecube.wisc.edu/science/icecube/",
        "title": "IceCube",
        "publisher": "IceCube Neutrino Observatory (University of Wisconsin–Madison)"
      },
      {
        "url": "https://arxiv.org/pdf/1108.1838",
        "title": "IceCube: Status and Results",
        "publisher": "arXiv (T. K. Gaisser for the IceCube Collaboration)"
      }
    ]
  },
  {
    "id": "plinius-naturalis-historia-77",
    "title": "Plinius widmet Titus die Naturalis historia",
    "sources": [
      {
        "url": "https://www.gutenberg.org/files/57493/57493-h/57493-h.htm",
        "title": "The Natural History of Pliny, Vol. I (übers. von John Bostock und H. T. Riley, 1855)",
        "publisher": "Project Gutenberg"
      },
      {
        "url": "https://www.livius.org/articles/person/pliny-the-elder/pliny-the-elder-natural-history",
        "title": "Pliny the Elder, Natural History",
        "publisher": "Livius.org (Jona Lendering)"
      },
      {
        "url": "https://en.wikipedia.org/wiki/Natural_History_(Pliny)",
        "title": "Natural History (Pliny)",
        "publisher": "Wikipedia"
      },
      {
        "url": "https://nemoslibrary.com/2021/07/21/letters-of-pliny-the-younger-on-his-uncle-pliny-the-elder/",
        "title": "Letters of Pliny the Younger: On His Uncle Pliny the Elder (Brief 3,5)",
        "publisher": "Nemo's Library"
      },
      {
        "url": "https://www.britannica.com/biography/Pliny-the-Elder",
        "title": "Pliny the Elder",
        "publisher": "Encyclopaedia Britannica"
      }
    ]
  },
  {
    "id": "ptolemaios-almagest-150",
    "title": "Almagest: Ptolemaios vollendet um 150 sein Werk in 13 Büchern",
    "sources": [
      {
        "url": "https://mathshistory.st-andrews.ac.uk/Biographies/Ptolemy/",
        "title": "Ptolemy (85 - 165) - Biography",
        "publisher": "MacTutor History of Mathematics, University of St Andrews"
      },
      {
        "url": "https://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/ptolemy-claudius-ptolemaeus",
        "title": "Ptolemy (Claudius Ptolemaeus) (New Catholic Encyclopedia)",
        "publisher": "Encyclopedia.com"
      },
      {
        "url": "https://www.worldhistory.org/Claudius_Ptolemy/",
        "title": "Claudius Ptolemy",
        "publisher": "World History Encyclopedia"
      },
      {
        "url": "http://www.ianridpath.com/startales/almagest.html",
        "title": "Star Tales – Ptolemy’s Almagest",
        "publisher": "Ian Ridpath"
      },
      {
        "url": "https://apps.lib.umn.edu/bell/map/PTO/WRITE/alma.html",
        "title": "Ptolemy’s Almagest",
        "publisher": "James Ford Bell Library, University of Minnesota"
      },
      {
        "url": "https://arxiv.org/pdf/1712.05437",
        "title": "Where Did Copernicus Obtain the Tools to Build His Heliocentric Model? (mit Übersetzung von Valentin Rose: Ptolemaeus und die Schule von Toledo, 1874)",
        "publisher": "arXiv"
      },
      {
        "url": "https://mathshistory.st-andrews.ac.uk/Biographies/Gherard/",
        "title": "Gherard of Cremona",
        "publisher": "MacTutor History of Mathematics, University of St Andrews"
      }
    ]
  },
  {
    "id": "ramessidische-sternuhren-12-jh-v-chr",
    "title": "Ramessidische Sternuhren lesen die Nachtstunden an einer Figur ab",
    "sources": [
      {
        "url": "https://perimeterinstitute.ca/news/can-data-science-help-decode-3100-year-old-ramesside-star-clocks",
        "title": "Can data science help decode 3,100-year-old “Ramesside star clocks”?",
        "publisher": "Perimeter Institute for Theoretical Physics"
      },
      {
        "url": "https://arxiv.org/pdf/1810.06412",
        "title": "Algol as Horus in the Cairo Calendar: the possible means and the motives of the observations (Porceddu, Jetsu u. a.)",
        "publisher": "arXiv"
      },
      {
        "url": "https://arxiv.org/pdf/physics/0407108",
        "title": "On the possible discovery of precessional effects in ancient astronomy (J. A. Belmonte)",
        "publisher": "arXiv"
      },
      {
        "url": "https://thebanmappingproject.com/tombs/kv-09-rameses-v-and-rameses-vi",
        "title": "Rameses V and Rameses VI (KV 9)",
        "publisher": "Theban Mapping Project"
      },
      {
        "url": "https://www.ucl.ac.uk/museums-static/digitalegypt/chronology/ramsesvi.html",
        "title": "Ramesses VI Nebmaatre-meryamun",
        "publisher": "University College London, Digital Egypt for Universities"
      }
    ]
  },
  {
    "id": "seneca-naturales-quaestiones-62",
    "title": "Seneca schreibt in den 60er-Jahren seine Naturales quaestiones",
    "sources": [
      {
        "url": "https://dcc.dickinson.edu/seneca-natural-questions/intro/introduction",
        "title": "Introduction (Seneca, Natural Questions, Christopher Trinacty)",
        "publisher": "Dickinson College Commentaries"
      },
      {
        "url": "https://oberlinclassics.com/seneca-naturales-quaestiones-3-introduction/",
        "title": "Seneca Naturales Quaestiones 3 Introduction (Christopher Trinacty)",
        "publisher": "Oberlin Classics"
      },
      {
        "url": "https://www.loebclassics.com/view/LCL450/1971/pb_LCL450.xiii.xml",
        "title": "Seneca, Natural Questions, Volume I, Introduction (Thomas H. Corcoran, LCL 450)",
        "publisher": "Loeb Classical Library, Harvard University Press"
      },
      {
        "url": "https://plato.stanford.edu/entries/seneca/",
        "title": "Seneca",
        "publisher": "Stanford Encyclopedia of Philosophy"
      },
      {
        "url": "https://iep.utm.edu/seneca/",
        "title": "Seneca, Lucius Annaeus (Robert Wagoner)",
        "publisher": "Internet Encyclopedia of Philosophy"
      },
      {
        "url": "https://bmcr.brynmawr.edu/2013/2013.04.52/",
        "title": "Rezension zu Beretta/Citti/Pasetti (Hg.), Seneca e le scienze naturali (Arthur Haushalter)",
        "publisher": "Bryn Mawr Classical Review"
      },
      {
        "url": "https://www.cambridge.org/core/journals/classical-quarterly/article/abs/manuscript-tradition-of-senecas-natural-questions-addenda/B5F94C20E85A4A3611FEFFE6C09BC62B",
        "title": "The Manuscript Tradition of Seneca's Natural Questions: Addenda (H. M. Hine)",
        "publisher": "Classical Quarterly, Cambridge University Press"
      }
    ]
  },
  {
    "id": "si-neudefinition-2019",
    "title": "SI-Neudefinition 2019 bindet Kilogramm an Planck-Konstante",
    "sources": [
      {
        "url": "https://www.bipm.org/en/-/resolution-cgpm-26-1",
        "title": "Resolution 1 of the 26th CGPM (2018): On the revision of the International System of Units (SI)",
        "publisher": "Bureau international des poids et mesures (BIPM)"
      },
      {
        "url": "https://www.sciencenews.org/article/official-redefining-kilogram-units-measurement",
        "title": "It's official: We're redefining the kilogram",
        "publisher": "Science News"
      },
      {
        "url": "https://www.nist.gov/si-redefinition/kilogram/kilogram-present",
        "title": "Kilogram: The Present",
        "publisher": "National Institute of Standards and Technology (NIST)"
      },
      {
        "url": "https://www.gov.uk/government/news/a-weight-off-our-minds-farewell-to-the-kilogram-as-we-know-it",
        "title": "A weight off our minds: farewell to the kilogram as we know it",
        "publisher": "Government Chemist (GOV.UK)"
      },
      {
        "url": "https://www.ptb.de/cms/en/presseaktuelles/journals-magazines/ptb-news/ptb-news-ausgaben/archivederptb-news/ptb-news-20103/the-new-kilogram-is-approaching.html",
        "title": "The \"new\" kilogram is approaching (PTB-News 3/2010)",
        "publisher": "Physikalisch-Technische Bundesanstalt (PTB)"
      },
      {
        "url": "https://www.nist.gov/si-redefinition/kilogram-introduction",
        "title": "Kilogram: Introduction",
        "publisher": "National Institute of Standards and Technology (NIST)"
      },
      {
        "url": "https://www.bipm.org/documents/20126/60327947/Convocation-2018.pdf/7ff2076c-1868-9764-1a62-ce22b2cad3c4",
        "title": "Convocation of the General Conference on Weights and Measures (26th meeting)",
        "publisher": "Bureau international des poids et mesures (BIPM)"
      },
      {
        "url": "https://www.euramet.org/publications-media-centre/news/news/scientists-are-set-to-overhaul-the-international-system-of-units",
        "title": "Scientists are set to overhaul the International System of Units",
        "publisher": "EURAMET"
      }
    ]
  },
  {
    "id": "su-song-uhrturm-kaifeng-1092",
    "title": "Su Song baut in Kaifeng einen Uhrturm, den Wasserkraft antreibt",
    "sources": [
      {
        "url": "https://myweb.rollins.edu/jsiry/ChineseClock.html",
        "title": "What was Su Sung's clock?",
        "publisher": "Rollins College"
      },
      {
        "url": "https://www.sciencefocus.com/future-technology/made-in-ancient-china-amazing-inventions-from-the-far-east",
        "title": "Made in (ancient) China: amazing inventions from the Far East",
        "publisher": "BBC Science Focus Magazine"
      },
      {
        "url": "https://hk.space.museum/en/web/spm/resources/curators-blog/2020/12/su-song-and-the-water-driven-astronomical-clock-tower.html",
        "title": "Su Song and the Water-driven Astronomical Clock-tower",
        "publisher": "Hong Kong Space Museum"
      },
      {
        "url": "https://www.nmns.edu.tw/en/exhibitions/galleries/human-cultures-hall/water-powered/index.html",
        "title": "Water-powered Armillary Sphere and Celestial Globe Tower",
        "publisher": "National Museum of Natural Science, Taichung"
      },
      {
        "url": "https://www.taiwan-panorama.com/en/Articles/Details?Guid=afaaecaa-eea3-4511-b6df-745ca92d44a1&CatId=9&postname=Taiwan%27s+Biggest+Cuckoo+Clock%3F--Recreating+an+Astronomical+Timepiece",
        "title": "Taiwan's Biggest Cuckoo Clock?--Recreating an Astronomical Timepiece",
        "publisher": "Taiwan Panorama"
      }
    ]
  },
  {
    "id": "theon-sonnenfinsternis-alexandria-364",
    "title": "Theon von Alexandria hält 364 eine Sonnenfinsternis fest",
    "sources": [
      {
        "url": "https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/theon-alexandria",
        "title": "Theon of Alexandria (Dictionary of Scientific Biography, G. J. Toomer)",
        "publisher": "Encyclopedia.com (Gale)"
      },
      {
        "url": "https://archive.nyu.edu/bitstream/2451/60900/2/Jones%202012%20Theon%20of%20Alexandria%20eclipse%20JHA.pdf",
        "title": "Theon of Alexandria's Observation of the Solar Eclipse of A.D. 364 June 16 (Journal for the History of Astronomy 43, 2012)",
        "publisher": "Alexander Jones, NYU Faculty Digital Archive"
      },
      {
        "url": "https://mathshistory.st-andrews.ac.uk/Extras/Rome_1950_ICM/",
        "title": "The Calculation of an Eclipse of the Sun According to Theon of Alexandria (Adolphe Rome, ICM 1950)",
        "publisher": "MacTutor History of Mathematics, University of St Andrews"
      },
      {
        "url": "https://mathshistory.st-andrews.ac.uk/Biographies/Theon/",
        "title": "Theon of Alexandria (335 - 405) - Biography",
        "publisher": "MacTutor History of Mathematics, University of St Andrews"
      },
      {
        "url": "https://eclipse.gsfc.nasa.gov/LEcat5/LE0301-0400.html",
        "title": "Five Millennium Catalog of Lunar Eclipses: 0301 to 0400",
        "publisher": "NASA Eclipse Web Site (Goddard Space Flight Center)"
      }
    ]
  },
  {
    "id": "thorium-kernuhr-2024",
    "title": "Ein Übergang im Thoriumkern wird 2024 direkt an einer Atomuhr gemessen",
    "sources": [
      {
        "url": "https://arxiv.org/pdf/2406.18719",
        "title": "Frequency ratio of the 229mTh nuclear isomeric transition and the 87Sr atomic clock (Preprint, Zhang et al.)",
        "publisher": "arXiv"
      },
      {
        "url": "https://www.nist.gov/news-events/news/2024/09/major-leap-nuclear-clock-paves-way-ultraprecise-timekeeping",
        "title": "Major Leap for Nuclear Clock Paves Way for Ultraprecise Timekeeping",
        "publisher": "National Institute of Standards and Technology (NIST)"
      },
      {
        "url": "https://www.tuwien.at/tu-wien/aktuelles/news/news/die-erste-atomkern-uhr-der-welt",
        "title": "Die erste Atomkern-Uhr der Welt",
        "publisher": "TU Wien"
      },
      {
        "url": "https://physicsworld.com/a/nuclear-clock-ticks-ever-closer/",
        "title": "Nuclear clock ticks ever closer",
        "publisher": "Physics World (IOP Publishing)"
      },
      {
        "url": "https://www.med.physik.uni-muenchen.de/aktuelles/nuclear-clock-breakthough/index.html",
        "title": "Breakthrough in Nuclear Clock research featured on title page of 'Nature'",
        "publisher": "LMU München, Fakultät für Physik"
      }
    ]
  }
]