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This is a scheduled post planned to be published at 1462865068000 at 1462865068000
On this day in 28 BC – The first recorded observation of a sunspot was made by Han dynastyastronomers during the reign of Emperor Cheng of Han. On this day in 28 BC – The first recorded observation of a sunspot was made by Han dynastyastronomers during the reign of Emperor Cheng of Han.
1462865068000 at 1462865068000

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