epoch

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moment in time used as a reference point for some time-varying astronomical quantity

Adnoddau allanol

astronomical concepts^[4]

epoch

Encyclopædia Britannica 11th edition

mae'r datganiad yn destun o: 1911 Encyclopædia Britannica/Epoch

Explanatory Dictionary of the Living Great Russian Language

mae'r datganiad yn destun o: Q30177827

Wikipedia:Vital articles/Level/4

pwynt mewn amser: 31 Hydref 2022

epoc