Tropical year Still known as the solar year - a period of time during which the sun completes one cycle of changing seasons, as can be seen from the Earth, such as the time from one vernal equinox to the next, or from one of the summer solstice to another.
Anomalistic year - It is the Earth's orbital period relative to the points of its elliptical orbit, called apses - this is the time where the Earth is closest to the Sun , and apocentre where Earth is farthest from the Sun .
