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
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 artificial neural network.
Epoch , The award-winning literary magazine of Cornell University.
Epoch , a science fiction film directed by Matt Codd
The sequel Epoch: Evolution
The Epoch Game Pocket