Is There No Arafat Except the One in Arafat? by Abdullah bin Hamid Ali

In addition to the ongoing disagreements over when Ramadan begins and ends, there is a dispute every year over whether or not the correct day of Arafat is the one being observed by those making the pilgrimage to Mecca. A considerable number of Muslims assume that Islam demands that every Muslim community in the world adjust their local calendars to conform to the Saudi Arabian Islamic calendar...more here.