Depending on context, epoch can refer to: Period of time · a distinctive historical period or era · a unit of the geologic time scale, less than a period and greater than an age · a phase in the development of the universe with distinctive properties · a religion Moment in time An Epoch signifies a significant event, time, or moment which is chosen as a new origin for time measurements, usually as the delimiting factor of an era: · References to such may include Epochal date, Epochal event, Epochal moment as covered in · the main article 'epoch . · epoch , and Epochal moment regard a precise moment in time for which celestial coordinates or orbital elements are specified. Time benchmark in Computing · a step in the training process of an artifici