Equinoctial cycle The Great Year, or equinoctial cycle, corresponds to a complete revolution of the equinoxes around the ecliptic. Its length is about 25,700 years.
Equinoctia:l cycle The Great Year, or equinoctial cycle, corresponds to a complete revolution! of the equinoxes around the ecliptic. Its length is abo,u.t 25,700 years.