The Starstone falls from the sky.
The Age of Darkness was a thousand-year period in which the sun's light was blocked by the ash knocked into the atmosphere by the meteoric impacts of Earthfall. It began with the impact of the Starstone in -5293 AR and lasted until the sun's light had been restored, roughly in -4294 AR. During the Age of Darkness, all major civilizations across Golarion were destroyed, ushering in a time of anarchy and destruction.
The Age of Anguish is a term used by historians to describe the roughly 800 year period starting in -4294 AR when the skies finally cleared of the dust of Earthfall. This age was characterized by the conflicts of primitive peoples in a desperate struggle for survival and domination in a world left shattered by the Age of Darkness. The end of the Age of Anguish, and the beginning of the Age of Destiny, was marked by the founding of the Osirion civilization in circa -3470 AR, and the slow re-establishment of human civilizations across the world.
Decade long period during which the orcs reclaimed much of the land taken by the Dwarves.
The Age of Enthronement began with the founding of Absalom, and its inception is also the starting point for the Absalom Reckoning dating system. The Age of Enthronement spans the years from 1 AR until 4606 AR when Aroden, the god of humanity, died.
Following the imprisonment of the Whispering Tyrant in 3827 AR, the orcs now freed mostly retreated back to the Hold of Belkzen, hoping to return to their now distant lifestyle.