The exact time of the total solar eclipse in 2009

The specific time of the total solar eclipse in 2009 is 8: 00 am on July 22 (the first day of the sixth lunar month), and the longest duration of the total solar eclipse can be about 6 minutes.

In the middle and lower reaches of the Yangtze River in China, Chengdu, Chongqing, Wuhan, Hefei, Hangzhou, Shanghai and other cities have seen the longest total solar eclipse in this century. In many places, the total solar eclipse lasts for five or six minutes, and Tongling, Anhui Province is identified as the best observation point in the world. In this process, the umbra of the moon travels eastward along the Yangtze River, sweeping the middle and lower reaches of the Yangtze River.

Extended data:

The cause of total solar eclipse

Because the diameter of the sun is about 400 times that of the moon, the distance from the sun to the earth is about 400 times that of the moon, but the distance from the sun to the moon is just 400 times.

Therefore, when the sun, the moon and the earth move in a straight line, due to symmetry, the shadow of the moon, that is, the shadow that falls on the surface of the earth, is just wide enough to cover the whole sun. The sun ball is completely covered by the moon, and the original bright sun disk is covered by the shadow of the moon, forming a total solar eclipse.

Baidu encyclopedia-Yangtze daquan gourmet