IIRC most documents with a date are in invalid YYYY-DD-MM, e.g. the first day the first personal letter between from Roger. There’s just one or two in the valid YYYY-MM-DD I think.
Sorry about the document with a date format ambiguity, I tried not to have date ambiguity but may have missed one. Or I may have labeled the data wrong (in terms of “this doc should be redacted”).