year

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year

(yēr),
An approximately 365-day period, the time the earth takes to revolve around the sun.
[O.E. gēar ]
References in periodicals archive ?
(4) This is the modern value of the tropical year. In the ancient world, observers were limited to an accuracy of about six hours in their estimates of the true solstice and equinoctial times.
Here we focalize our attention on an instrument used for the determination of the tropical year (the time between two spring equinoxes) that belongs to the history of the astronomy and the evolution of the calendar.
The more accurate tropical year -- the average time between successive vernal equinoxes -- is roughly 365.2422 days.