The dates are irrelevant because of the simple fact that Kavanaugh has already admitted to the Senate about knowing in advance and he never said exactly when he first found out. He generalized.
When asked this is what he testified. “When did you first hear of Ms. Ramirez’s allegations against you?” Kavanaugh replied, “In the last week — in the period since then, the New Yorker story.”
He never said he first heard about the allegations by reading the New Yorker or when the story first came out. He said he heard about them during the period of the story. I already pointed out that the allegations were public for days before the story was printed and Kavanaugh is on record with the Senate staff telling them he heard about it through the grapevine before the story was printed because Ramirez and the New Yorker were calling around asking people about it and trying to jog her memory.