The length of time between two successive vernal equinoxes.
The average period of the revolution of the Earth around the Sun with respect to the vernal equinox. Its length is approximately 365.242,2 days. The tropical year determines the cycle of changes in the seasons, and is the unit to which the calendar year is adjusted through the occasional introduction of the extra day on leap years.
The interval of time between successive passages of the Sun through the vernal equinox (365.2422 mean solar days).
The time required for the Earth to move around its orbit, relative to the Vernal Equinox. Differs from the sidereal year because of the precession of the Equinoxes.
The time interval between one vernal equinox and the next.
The time required for one complete orbit of the earth, relative to the sun.
The year of the seasons, 365.24220 days, which is when the earth comes back to the same point in its orbit relative to its axial tilt.
the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
a natural division of time, being that in which the sun apparently moves from a tropic or equinox around the heavens to the same point again
The length of time it takes the Sun to circle the sky relative to the vernal equinox. The tropical year is identical to our standard year.
The mean interval between vernal equinoxes.
the time it takes Earth to revolve around the sun with respect to the vernal equinox
The time interval needed for the mean tropical longitude of the Sun to increase by 360 degrees.
the time interval between two successive vernal equinoxes = 365.2422 mean solar days (contrast with sidereal year).
The time that it takes the sun to travel from one vernal equinox to the next.
A tropical year (also known as a solar year) is the length of time that the Sun, as viewed from the Earth, takes to return to the same position along the ecliptic (its path among the stars on the celestial sphere) relative to the equinoxes and solstices. The precise length of time depends on which point of the ecliptic one chooses: starting from the (northern) vernal equinox, one of the four cardinal points along the ecliptic, yields the vernal equinox year; averaging over all starting points on the ecliptic yields the mean tropical year.
