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In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured.
Read the full article →Not who you're looking for? Others named epoch: moment in time used as a reference point for some time-varyi · subdivision of geological time; shorter than a period and lo · anthology of science fiction stories · magazine of Fyodor and Mikhail Dostoyevsky (1864—1865)