On September 16, 1965 (August 21, 1965), astronomers discovered Yangtze Valley and Yangtze Valley (C/1965S1), a non-cyclic comet discovered by the Japanese amateur astronomer Yangtze Valley and Yangtze Valley on September 18, 1965. On October 21, Yangtze Valley and Yangtze Valley (C/1965S1), a non-cyclic comet discovered by Yangtze Valley and Yangtze Valley on September 18, 1965. Yangtze Valley and Yangtze Island (C/1965S1), a non-cyclic comet discovered by the Japanese amateur astronomer Yangtze Valley and Yangtze Valley on September 18, 1965. Yangtze Valley refers to a very small comet that is close to the sun (about 450,000 km from the sun's surface) and that the total of the observed Yangtze Valley and Yangtze Valley