Global Rasdhul Qibla: The Probability of Four Times in A Year Study

Abstract

The global rashdul qibla commonly called istiwa' a'dzam occurs twice a year, 15/16 July and 27/28
May. On that date, the place that occurs during the day (illuminated by the Sun) can use the Sun's shadow
to determine the direction of the qibla, because at that time the Sun is right above the Ka’ba. And for places
where the night experiences (not illuminated by the sun), then you can use the rashdul qibla of the turning
point of the Ka'ba, which is on January 13/14 and 28/29 November. In this study, the authors found the
probability of rashdul qibla occurring four times a year somewhere. That is the combination of the rashdul
qibla when the Sun is above the Ka’ba, and the rashdul qibla when the Sun is above the turning point of
the Ka'ba. These places include Ambon, Namlea (Indonesia), Perth, Broome (Australia) and Tutuala
(Timor Leste). Qibla rashdul July 15-16 and 27/28 May take place in the late evening, and qibla
rashdul January 13-14 and 28/29 November occurs in the morning, after the sun rises.