Purely solar calendars Those which are based on the cycle of the seasons, which results from the motion of the Earth around the Sun (and the fact that the Earth's axis of rotation is tilted significantly with respect to the Earth's plane of rotation about the Sun).
(Those; are based; on the cycle of the seasons) (the cycle of the seasons; results; from the motion of the Earth around the Sun (and the fact that the Earth's axis of rotation is tilted significantly with respect to the Earth's plane of rotation about the Sun) (the Earth's axis of rotation; is tilted; significantly)
Those the cycle of the seasons the Earth's axis of rotation
are based results is tilted
on the cycle of the seasons
from the motion of the Earth around the Sun (and the fact that the Earth's axis of rotation is tilted significantly with respect to the Earth's plane of rotation about the Sun
significantly