The Jalālī (or Malikī) Calendar is well known to Iranian and Western researchers. It was established by the order of Sulṭān Jalāl al-Dīn Malikshāh-i Saljūqī in the 5th c. A.H. (The dates which are designated with A.H. indicate the Hijrī Calendar.)/11th c. A.D. in Isfahan. After the death of Yazdigird III (the last king of the Sassanid dynasty), the Yazdigirdī Calendar, as a solar one, gradually lost its position, and the Hijrī Calendar replaced it. After the rise of Islam, nonetheless, Iranians preferred various solar calendars to the Hijrī one. The Jalālī Calendar must be considered the culmination of such efforts. The present article deals with the riddle of the radix date (epoch) of the Jalālī Calendar. The author examines the problem through a historical approach and provides a novel solution to the question.

中文翻译：

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Jalālī 日历：其基数日期之谜

Jalālī（或 Malikī）日历为伊朗和西方研究人员所熟知。它由 Sulṭān Jalāl al-Dīn Malikshāh-i Saljūqī 的命令在 5 世纪建立。AH（以 AH 指定的日期表示回历。）/11 世纪。AD在伊斯法罕。亚兹迪格三世（萨珊王朝最后一位国王）死后，作为太阳历的亚兹迪格日逐渐失去地位，取而代之的是回历。尽管如此，在伊斯兰教兴起之后，伊朗人更喜欢各种阳历而不是回历。必须将 Jalālī 日历视为此类努力的顶点。这篇文章处理的是Jalālī历的基数日期（纪元）之谜。作者通过历史方法研究了这个问题，并为这个问题提供了一个新的解决方案。