epoch vs date of reference

date of reference vs epoch

epoch and date of reference both are nouns.

Word	Noun	Adjective	Verb	Adverb
epoch	Yes	No	No	No
date of reference	Yes	No	No	No

As nouns, epoch and date of reference are synonyms defined as:

epoch and date of reference: (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded

epoch (noun)	date of reference (noun)
a period marked by distinctive character or reckoned from a fixed point or event	(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
a unit of geological time that is a subdivision of a period and is itself divided into ages
(astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded

Difference between epoch and date of reference

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