Alternative spelling of light year

a year with an extra day, a leap year

The time that it takes for the Sun to return to the same position along the ecliptic, as viewed from the Earth, especially: / A vernal equinox year, the time between two successive vernal equinoxes.

Operating or continuing throughout the year.

Continuing throughout the year.

The orbital period of the Earth; a measure of the time it takes for the Sun to return to the same position with respect to the stars of the celestial sphere. A sidereal year is about 20.4 minutes longer than the tropical year (which is what is kept stable by the Gregorian calendar) due to precession of the equinoxes.

On or happening at the end of the year (e.g., late December).

One person's working time for a year, or the equivalent, used as a measure of how much work or labor is required or consumed to perform some task.

The time it takes the Earth to pass once around the Sun, as reckoned with respect to the seasons and not the fixed stars (for instance from vernal equinox to vernal equinox).

The time it takes the Earth to pass once around the Sun, particularly a tropical, sidereal, or anomalistic year.