周日运动 meaning in Chinese

daily motion
daily rotation
diurnal motion
diurnal rotation

Mean diurnal motion
平均周日运动
Luckily , this motion will not cause any harm to the living things on earth . actually , noticeable effects are mainly astronomical : the pole star changes , and the position of the equinoxes and the solstices shifted westward
我们每天看见太阳月球和恒星由东方升起及西方落下，这个运动称为周日运动，但它并非天体真正的运动，而是由于地球每天不断由西向东自转所做成。