Shiavault - a Vault of Shia Islamic Books Mahdi in the Quran According to Shi‘ite Quran Commentators Dates The date formulae used throughout this study, as well as in bibliographical references, are the following: • Islamic lunar year AH (After Hijra) and Gregorian year, e.g. 468 AH / 1075 AD • Iranian solar year designated by the abbreviation Sh (for Shamsi) and Gregorian year, e.g. 1256 Sh /1877 AD Previous Next