Download or read book In Synchrony with the Heavens, Volume 2 Instruments of Mass Calculation (2 Vols. ) written by David King and published by Islamic Philosophy, Theology a. This book was released on 2013-12 with total page 1146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first investigation of one of the main interests of astronomy in Islamic civilization, namely, timekeeping by the sun and stars and the regulation of the astronomically-defined times of Muslim prayer. The study is based on over 500 medieval astronomical manuscripts first identified by the author, now preserved in libraries all over the world and originally from the entire Islamic world from the Maghrib to Central Asia and the Yemen.