Amina Inloes, Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the... Answered 1 year ago

It depends on what one understands "easts" and "wests" to mean. 

It is narrated from Imam Ali (A) that this is because the sun rises in a different place every day; this spot changes throughout the year. "Easts" can be taken to mean literally "places of sunrise" and "wests" can be taken to mean "places of sunset". So it refers to all the different places where the sun rises and sets as one of the divine signs.