{
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  "calendarDateRemoved": "2025-01-09",
  "officialSource": "https://ir.theice.com/press/news-details/2024/The-New-York-Stock-Exchange-Will-Close-Markets-on-January-9-to-Honor-the-Passing-of-Former-President-Jimmy-Carter-on-National-Day-of-Mourning/default.aspx",
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  "dataVintagePolicy": "The corrected ledger is a fresh full Yahoo replay. Tiny vendor precision deltas are retained and disclosed rather than represented as bitwise-identical history.",
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