Epoch (disambiguation)

An epoch is an instant in time chosen as the origin of a particular calendar era.

Epoch or EPOCH may also refer to:


  • Any historical era
  • Epoch (astronomy), a moment in time used as a reference for the orbital elements of a celestial body
  • Epoch (computing), a moment from which system time is usually measured
  • Epoch (cosmology) or cosmologic epoch, a phase in the development of the universe since the Big Bang
  • On the geologic time scale, an epoch is a span of time smaller than a period and larger than an age
  • Epoch (race), racial periods in Blavatsky's esoteric theory of the root races
  • Unix epoch, the starting time for Unix-based operating systems

Arts and entertainmentEdit



Science and technologyEdit

  • EPOCH (chemotherapy), a chemotherapy regimen
  • EPOCh (Extrasolar Planet Observation and Characterization), a NASA mission associated with EPOXI
  • Epoch (machine learning), the complete processing of a (typically large) batch of recorded observations by an artificial neural network


See alsoEdit