{
 "id": "source/iranica-calendars-abdollahy",
 "class": "source",
 "slug": "iranica-calendars-abdollahy",
 "label": {
  "ar": "التقاويم في العصر الإسلامي — رضا عبد اللهي، إيرانيكا",
  "en": "Calendars in the Islamic period — Reza Abdollahy, Iranica",
  "ur": "اسلامی دور میں تقاویم — رضا عبداللہی، ایرانیکا"
 },
 "summary": {
  "ar": "عرض للتقويم الجلالي وشهوره وكبائسه وللفرق عن الإصلاح الهجري الشمسي الحديث؛ لا خوارزمية أصلية ثابتة إلى الأبد.",
  "en": "Jalali months/intercalation and distinctions from modern Solar Hijri reform; not an original perpetually fixed algorithm.",
  "ur": "جلالی مہینے و کبیسہ اور جدید ہجری شمسی اصلاح سے فرق؛ اصل دائمی مقررہ الگورتھم کا دعویٰ نہیں۔"
 },
 "stub": false,
 "wings": [],
 "regions": [],
 "periods": [],
 "tags": [],
 "aliases": [],
 "themes": [],
 "data": {
  "kind": "secondary",
  "type": "article",
  "title": "CALENDARS ii. In the Islamic period",
  "author": [
   {
    "family": "Abdollahy",
    "given": "Reza"
   }
  ],
  "publisher": "Encyclopaedia Iranica; CALENDARS print entry vol.IV, fasc.6–7, pp.658–677",
  "issued": {
   "date-parts": [
    [
     1990,
     12,
     15
    ]
   ]
  },
  "edition": "Web update16 December2016; named author/publication metadata checked on actual rendered page",
  "language": "en",
  "URL": "https://www.iranicaonline.org/articles/calendars/calendars-ii-in-the-islamic-period/",
  "open_access": true,
  "reliability_note": "Read actual Jalali subsection and modern Solar Hijri comparison, selected surrounding fiscal/date-conversion context; not every bibliography item. Describes30-day historical months, later variant intercalation and1925 month-length reform. Gives9 Ramadan471/15 March1079 and interprets468 as fiscal era, unlike Thomann's account of1076/468 AH and10 Ramadan471; retain disagreement, do not silently harmonize. Historical formulae and modern-cycle discussion are dated author accounts, not verified present-day legal conversion software. Omit misleading precision/eternal-accuracy claims.",
  "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 named-author page, Jalali and modern Solar Hijri subsections plus metadata; not AI search synthesis",
   "extensions": [
    {
     "generated_by": "Copilot SDK in VS Code",
     "model": "unknown",
     "run": "inventions-p3-b88",
     "source": "Additionally read actual lunar-Hejri subsection: adoption16/17/18AH, consultation, reported earlier letters, Muharram/RabiI distinction,15July622epoch and observational/artificial calendars. Original letters/histories not independently authenticated; Britannica16July variant retained."
    }
   ]
  }
 },
 "prose": {},
 "degree": 0,
 "contemporaries": [],
 "updated": "2026-11-06",
 "connections": [],
 "related": [],
 "license": {
  "prose": "CC BY-SA 4.0",
  "data": "CC0 1.0"
 }
}