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
Epoch (race), racial periods in Blavatsky's esoteric theory of the root races
Unix epoch, the starting time for Unix-based operating systems
Epoch (geology), a span of time on the geologic time scale shorter than a period and longer than an age

Arts and entertainment

Epoch Co., a Japanese toy and computer games company
- Epoch Game Pocket Computer, an early hand-held game console produced by Epoch Co.
Epoch (Chrono Trigger), a flying time machine in role-playing game Chrono Trigger
Epoch Hunter, a boss in Caverns of Time from the game World of Warcraft

Epoch (American magazine), literary magazine of Cornell University
Epoch (Russian magazine), literary magazine by Fyodor Dostoyevsky and his brother Mikhail
Ha-Tsfira (lit. Epoch), a Hebrew language newspaper published in 1862 and 1874–1931
The Epoch Times, a privately owned Falun Gong-linked newspaper

EPOCH (chemotherapy), a chemotherapy regimen
EPOCh (Extrasolar Planet Observation and Characterization), a NASA mission associated with EPOXI
Epoch (machine learning), the training of a model for one cycle through the whole training dataset