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1092
| 1092 • The Song Dynasty Chinese scientist and statesman Su Song publishes his Xin Yi Xiang Fa Yao, a treatise outlining the construction and operation of his complex astronomical clocktower built in Kaifeng, China. It also includes a celestial atlas of five star maps. |
1154
Nov 18
Age: 62y
| 1154 • Belgrade is rebuilt by Byzantine emperor Manuel I Comnenus. |