The period of the mean lunar day, approximately 24.84 solar hours, is derived from the rotation of the earth on its axis relative to the movement of the moon about the earth.
(The period of the mean lunar day; is derived; from the rotation of the earth on its axis relative to the movement of the moon about the earth)
The period of the mean lunar day
is derived
from the rotation of the earth on its axis relative to the movement of the moon about the earth