The LN scenario goes something like this:
Markham’s washateria clock was chronically 6 or 7 minutes slow and she had no other timepiece so she always thought that her 1:22 bus was a 1:15 bus. Therefore, when she said she left at 6 or 7 minutes after 1:00, it was actually 1:12-1:13 and she got to 10th & Patton just in time for Tippit’s shooting at 1:16.
As I recall ...Mrs Markham was on the telephone talking to her daughter when she noticed that the clock in her apartment indicated that it was about 1:00 pm. She told her daughter that she needed to hang up and go to catch the bus . Since she wanted to verify the clock in her apartment was correct she looked at the washateria clock as she walked through that laundry room.... She was acutely aware of the time when she reached the intersection of 10th & Patton....and she said in her sworn affidavit that the time was 1:06 when she saw officer Tippit shot by a young man who had bushy hair, was wearing a jacket that was darker colored than the jacket displayed to her as the jacket of the killer, white shirt and black trousers.
At the theater Lee Oswald was wearing a tawny gray colored shirt, ( Not a white shirt) and gray trousers......
Mr. BALL. Did he have a jacket or a shirt? The man that you saw shoot Officer Tippit and run away, did you notice if he had a jacket on?
Mrs. MARKHAM. He had a jacket on when he done it.
Mr. BALL. What kind of a jacket, what general color of jacket?
Mrs. MARKHAM. It was a short jacket open in the front, kind of a grayish tan.
Mr. BALL. I have here an exhibit, Commission Exhibit 162, a jacket. Did you ever see this before?
Mrs. MARKHAM. No; I did not.
Mr. BALL. Does it look like, anything like, the jacket the man had on?
Mrs. MARKHAM. It is short, open down the front. But that jacket it is a darker jacket than that, I know it was.
Mr. BALL. You don't think it was as light a jacket as that?
Mrs. MARKHAM. No, it was darker than that, I know it was. At that moment I was so excited--
Mr. BALL. I show you a shirt here, which is Exhibit 150. Did you ever see a shirt the color of this?
Mrs. MARKHAM. The shirt that this man had, it was a lighter looking shirt than that.
Mr. BALL. The man who shot Tippit?
Mrs. MARKHAM. Yes, sir; I think it was lighter.