Publisher's Synopsis
The first critical edition of an A.D. 1271 almanac, compiled by Yemeni sultan al-Malik al-Ashraf `Umar ibn Yusuf as one chapter in his Instruction in the Science of Astronomy and Astrology . It is the earliest of the eight extant Rasulid almanacs. The English translation is followed by the Arabic text, the two comprising only 40 pages. The rest of