In sports there are three regions. Because a disproportionate number of those teams are in the East, Pittsburgh, Cleveland, Cincinnati and Detroit were moved to the Central Divisions.
The US is divided into four time zones. All four of those cities are in the East. One could argue that all four cities are Eastern cities.
The US is divided into four time zones. All four of those cities are in the East. One could argue that all four cities are Eastern cities.