Why does the moon appear in the daytime?

Sunrise is a natural phenomenon, which is caused by the different rotation periods of the earth around the sun and the moon around the earth. Direct observation of the sun, moon and sky with naked eyes requires certain conditions. Generally, it can only be seen in broad daylight when the sky is clear and the visibility is good from February/Kloc-0 to March in the autumn lunar calendar.

When the sun rises or is about to set, the brightness of the sky can easily meet this condition (even in cities).

Extended information visibility is high under the scorching sun, and Nanjing staged a scene of "the sun and the moon shine together"

August 2, 20 18, the sun was shining in Nanjing. Many citizens found the sun shining at 8 o'clock in the morning, but when they turned around, they saw half a moon hanging high in the air, showing the scene of "the sun and the moon shining together". In addition to surprises, many people are also a little confused. "The sun and the moon shine together" often appears in the early morning or evening.

Modern Express reporter consulted Zhang _, director of the Science Department of Purple Mountain Observatory, Chinese Academy of Sciences. He explained that it is a common astronomical phenomenon that the sun and the moon shine together. Generally speaking, before and after the lunar month (15 or 16), as long as the atmospheric conditions permit, "the sun and the moon shine together" may appear, usually when the sun rises or sets.

As for the "Sunrise and Sunrise" staged at 8: 00 this morning, Zhang _ explained that it was related to the trajectories of the sun, the moon and the earth and their relative positions. From the earth, the moon is getting closer to the sun from west to east day by day, and the angle between them is getting smaller and smaller, and the moon looks higher and higher.

The setting time of the moon is getting later and closer to that of the sun. However, we may not see it because it is blocked by sunlight. However, if the weather is clear and the visibility is high, you can still see the scene of "the sun and the moon shining together" at 8: 00 in the morning.

Baidu encyclopedia-the sun and the moon shine together