Title: Muʻādalat al-Tamīmī al-falakīyah li-taḥwīl al-sanah al-qamarīyah (al-Hijrīyah) ilá mā yuqābiluhā min sanah shamsīyah (Mīlādīyah) aw al-ʻaks
Subjects: Islamic calendar, Gregorian Calendar, Mathematics, Formulae