The World Federation One Stop Fiqh

Ruling 1704

If the first of the month is established in a city, the first of the month will also be established in other cities that are united with it on the horizon. The meaning of ‘unity of horizon’ here is that if the moon is seen in the first city, it would also be seen in the second city if there were no obstacles, such as clouds and dust. This brings about confidence in the case where the second city – if it is to the west of the first city – has a latitudinal position close to that of the first city; and if it is to the east of the first city, then in addition to closeness in latitudinal position, there must not be a large difference in the longitudinal position either.