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apr 1, 365 BC - Gan De: He was one of the first Chinese astronomers. He recorded his observations using coordinated and dates. This shows that there are different stars visible at different times of the year.

Added to timeline:

History of Astronomy Timeline

ByAndie Doscher
4 Dec 2021
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436

Date:

apr 1, 365 BC
Now
~ 2392 years ago

Images:

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