مواقيت و ضوابط نويافته

Mawaqlt and Recently Found Rules

Having briefly been reviewed the historical process of changing the formulae for determining the times of Islamic prayers, two newly found formulae and a new rule for establishing the times of prayers would be discussed. These matters have been exploited from four texts, still preserved as manuscript: (1) Siyyid plya al-DTn ShushtarTs $ad Bab dar Macrifa al-A?turlab., (2) BlrunTʹs ʹIstfab fT cIlm al- A?turlab, (3) Muhammad Madjd al-DTn b. Zayn al-DTn Muhammad HamidanTʹs ʹAnis al-Tullab fi Macrifa al-A$turlab, and (4) an anonymous treatise named Al- \Istfab li- ʹl-Amal bi-$adr al- Waza wa- ʹl-Jinah al-Ghurab. In the end, the accuracy of the numeral results derived from those formulae would be presented, by making a comparison with each other as well as with the standard rules.