New ΔT constraints from Ming-era Chinese eclipse records tighten prior estimates and indicate a steeper ΔT decrease between 1514 and 1567 than previously modeled.
We then compared their dates to the union catalog of Chinese astronomical records (中國古代天象記錄總集; Beijing Observatory,
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Variable Earth's Rotation Speed in the 14th to 16th Centuries: New {\Delta}T Constraints from Chinese Eclipse Records
New ΔT constraints from Ming-era Chinese eclipse records tighten prior estimates and indicate a steeper ΔT decrease between 1514 and 1567 than previously modeled.