Calendars in the Islamic period — Reza Abdollahy, Iranica

التقاويم في العصر الإسلامي — رضا عبد اللهي، إيرانيكا

Jalali months/intercalation and distinctions from modern Solar Hijri reform; not an original perpetually fixed algorithm.

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islam.museum contributors. “Calendars in the Islamic period — Reza Abdollahy, Iranica”. islam.museum, https://islam.museum/en/source/iranica-calendars-abdollahy/. CC BY-SA 4.0. Last updated 2026-11-06.

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