plural of regnal year

plural of man-year

plural of school year

A year of rest for the land observed every seven years in ancient Judea, which included allowing the fields to lie without tilling, sowing, or reaping from one autumn to the next in accordance with a Levitical commandment.

plural of gap year

plural of sidereal year

plural of salad year

plural of sabbatical year

solar year

plural of astronomical year