It is said that there will be an annular solar eclipse tomorrow. When does it start?

The annular solar eclipse on 202 1 started at Beijing time 16: 08+02 and ended at 2 1: 06: 08+06: 08, lasting nearly 5 hours.

The moon covers most of the center of the sun, revealing the annular edge of the sun, like a shining "golden ring". This kind of annular solar eclipse is invisible in the eastern part of China, and some parts of the north can enjoy the sunset of partial solar eclipse.

Causes of annular eclipse

As a satellite of the earth, the moon goes around the earth. As a planet in the solar system, the earth and the moon revolve around the sun together. A solar eclipse occurs when the sun, the moon and the earth are in a straight line and the moon is between them. If the distance to the moon is far from the earth, and the moon's visual circle can't completely cover the sun, an annular eclipse will occur. ?

Total solar eclipse: because the moon is between the earth and the sun, but closer to the earth, the moon blocks the sun, so people on earth can't see the sun at all.

Partial solar eclipse refers to the astronomical phenomenon that when the moon moves between the earth and the sun and the earth moves to the penumbra of the moon, a part of the earth is blocked by the penumbra outside the shadow of the moon, and a part of the sun seen in this area will be blocked by the moon.