2050th anniversary: Chinese astronomers during the Han dynasty made the first precisely dated...
History · Anniversaries · Tue, May 10, 2022
-28: Chinese astronomers during the Han dynasty made the first precisely dated observation of a sunspot.
Source, method and history
- Source
- Wikipedia
- How we know
- Wikipedia "On this day" selected anniversary, 2050 years (-28 to 2022).
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- 2026-09-25: added to 2022-05-10