The longest total solar eclipse

On Friday, August 1 2008, people can enjoy a wonderful total solar eclipse in a narrow corridor that spans half the world. This long and narrow total lunar eclipse belt, formed by the umbra of the moon, started in Canada, passed through northern Greenland, the Arctic, central Russia and Mongolia, and finally ended in China. The partial solar eclipse caused by the penumbra of the moon can be seen in a wider range, including northeastern North America and most parts of Europe and Asia.

The total solar eclipse began in northern Canada. At 9: 23 UTC 1 August, the umbra of the moon swept Nu Loewit for the first time. At the center of this 206-kilometer-wide total solar eclipse belt, the duration of the total solar eclipse is 1 min 30 seconds. The northern boundary of the moon shadow swept through the southeast of Cornwallis Island, just missed the high arctic latitude area of Rexolute Town.

The umbra of the moon continues to move northeast, passing through devon island and reaching the south coast of ellesmere island and northern Greenland. The lunar umbra continues to move northeast, and the lunar umbra continues to move northeast.

Enter, cross devon island, and reach the south coast of ellesmere island and the northern part of Greenland. After passing through Greenland, the total solar eclipse belt passes through Franz Josef Land and Svalbard Islands. When the centerline reaches the northern coastline of Niigata Island (10:00 UTC), the total solar eclipse lasts for 2 minutes and 23 seconds. Before reaching Yamal Peninsula and Russia, the total solar eclipse belt will also sweep the Kara Sea and its islands.

When the moon's shadow axis passes through the nearest point to the center of the earth, the total solar eclipse lasts the longest, and the universal time at this time is 10:2 1:07. The total solar eclipse lasted for 2 minutes and 27 seconds, the sun was 34 degrees high, the total solar eclipse bandwidth was 237 kilometers, and the moving speed of the lunar umbra was 0.507 kilometers per second.

In the next hour, the umbra of the moon will pass through Central Asia and meander eastward, and the moving speed will gradually accelerate. Novosibirsk is only 18km away from the center line of the total lunar eclipse belt, the total lunar eclipse lasts for 2 minutes 18 seconds, and the height of the sun is 30 degrees. A few minutes later, Banauer ushered in a total solar eclipse lasting 2 minutes 16 seconds.

The center of the total solar eclipse belt continues to be hundreds of kilometers eastward along the border between China and Mongolia, and the duration of the total solar eclipse and the height of the sun gradually decrease. In Altay, China, the total solar eclipse started at Beijing time 18: 59 (Universal Time 10: 59) and lasted for 1 min for 25 seconds, with the sun at a height of 25 degrees. Ten minutes later, Beijing time 19: 10 (universal time 1 1: 10), the umbra of the moon just passed through Hami, Xinjiang, and the partial solar eclipse in Hami reached 0.998. This area in the northwest of China is specifically mentioned because it is the only place in the whole food belt where the weather is most favorable for observing the total solar eclipse. The monsoon, which affects the weather in Southeast Asia, is helpless to this area located in the east of Gobi Desert and the west of Taklimakan Desert, so as to ensure the clear sky in Wan Li on the day of the total solar eclipse as much as possible.

The umbra of the moon swept the northern part of China in the last ten minutes, and the height of the sun and the duration of the total lunar eclipse gradually decreased. Xi 'an, the ancient capital, is the southernmost demarcation point of the total solar eclipse, and the height of the sun is only 4 degrees when the total solar eclipse occurs. A few seconds later, the center of the moon shadow left the earth, and the whole total solar eclipse ended at Beijing time 19: 20 (Universal Time 1 1:20).

The moon shadow will return to the south of China one year later, that is, during the total solar eclipse on July 22nd, 2009.