Wiktionary
common years
n. (common year English)
Usage examples of "common years".
Afterwards when astronomers invented the great year of 25 and 36 thousand common years, which had for its object the bringing back all the stars to one point of departure and a general conjunction, the ambiguity of the terms introduced a similar ambiguity of ideas.
Her most recent non-fiction books are Animals at War and The Common Years.