{
 "id": "source/thomann-jalali-calendar-2021",
 "class": "source",
 "slug": "thomann-jalali-calendar-2021",
 "label": {
  "ar": "إنشاء التقويم الجلالي وتعايشه مع القديم — يوهانس تومان",
  "en": "Jalali calendar institution and cohabitation — Johannes Thomann",
  "ur": "جلالی تقویم کا قیام اور پرانے تقویم کے ساتھ استعمال — یوہانس تھومان"
 },
 "summary": {
  "ar": "مقارنة بين الأخبار والشواهد الفعلية، تحفظ خلاف البداية ودور الخيام واختلاف الاستعمال عن برنامج الإصلاح.",
  "en": "Literary/documentary comparison preserving epoch and Khayyam-role uncertainties and the distinction between reform programme and actual use.",
  "ur": "ادبی و دستاویزی مقابلہ، آغاز و خیام کے کردار کا اختلاف اور اصلاحی منصوبے سے اصل استعمال کا فرق محفوظ رکھتا ہے۔"
 },
 "stub": false,
 "wings": [],
 "regions": [],
 "periods": [],
 "tags": [],
 "aliases": [],
 "themes": [],
 "data": {
  "kind": "secondary",
  "type": "chapter",
  "title": "The Institution of the Jalālī Calendar in 1079 CE and Its Cohabitation with the Older Persian Calendar",
  "author": [
   {
    "family": "Thomann",
    "given": "Johannes"
   }
  ],
  "publisher": "Calendars in the Making: The Origins of Calendars from the Roman Empire to the Later Middle Ages, edited by Sacha Stern; Leiden: Brill, chapter5, pp.210–244",
  "issued": {
   "date-parts": [
    [
     2021
    ]
   ]
  },
  "language": "en",
  "DOI": "10.1163/9789004459694_007",
  "URL": "https://www.academia.edu/107829859/The_Institution_of_the_Jal%C4%81l%C4%AB_Calendar_in_1079_CE_and_Its_Cohabitation_with_the_Older_Persian_Calendar",
  "edition": "Actual publicly rendered ZORA accepted-version text; repository DOI10.5167/uzh-202848",
  "open_access": true,
  "reliability_note": "Read actual main sections1–6, not all appendices or every referenced primary; anchors use sections, not invented pagination of accepted version. Distinguishes anonymous reform astronomers from named observers, questions whether Khayyam designed the calendar, retains1076/1079 epochs and conflicting intercalation. Documentary section5 and figure5.1 identify Berlin Ms.or.quart.211/1804 alongside other calendars; manuscript image/PD metadata separately inspected. His limited-use/astrological interpretation is attributed, not proof of universal absence or endorsement of astrology. Academia AI abstract/key takeaways excluded; actual chapter text used. ZORA normal DOI returned Anubis, not bypassed.",
  "status": {
   "review": "published",
   "completeness": 2,
   "generated_by": "Copilot SDK in VS Code"
  },
  "provenance": {
   "generated_by": "Copilot SDK in VS Code",
   "model": "unknown",
   "run": "inventions-p3-b51",
   "source": "Actual accepted-version main text sections1–6 and publication metadata, not search synthesis or uninspected appendices"
  }
 },
 "prose": {},
 "degree": 0,
 "contemporaries": [],
 "updated": "2026-11-06",
 "connections": [],
 "related": [],
 "license": {
  "prose": "CC BY-SA 4.0",
  "data": "CC0 1.0"
 }
}