Historiografi Hisab Rukyah

The development of Hisab-Rukyah is not widely disclosed academically because Falak Science does currently have its place in society. Hisab Rukyah, course, must be re-expressed to show that this science has had a special the midst Islamic history. reckoning rukyah at time Prophet Muhammad was still level worship and simple. At Companions, also much different, but during Caliph `Umar Ibn Khattab calendar system successfully formulated. During tabi`in period, reached peak progress reign Abbasids, especially caliphate al-Ma'mun. This marked by emergence important figures their works which later influenced after even day. In Middle Ages, experienced setback due chaos world time, field astronomy were destroyed an attack Mongols, able rise again until modern times we are experiencing now.