由于地球的自转、月球的公转以及地球的公转 ,产生了日月年的现象 ,因此有些人认为地球自转和月球公转以及地球公转的周期就等于日月年的时间 ,实际上它们并不完全相等而是相差一点 ,下面介绍一下它们的区别 .1　日的概念以地球自转运动周期为基础的时间单位叫日 .根据参考点的 Due to the rotation of the earth, the revolution of the moon, and the revolution of the earth, the phenomenon of the sun, the moon, and the moon has occurred. Therefore, some people think that the cycle of the earth’s rotation, the moon’s revolution, and the revolution of the earth are equal to the time of the sun, the moon, and the moon. Actually, they are not completely equal. But the difference is a little bit different. Here is the difference between them. The concept of the 1st day is based on the rotation cycle of the Earth. The unit of time is called the date. According to the reference point