The case of the Airport Killing

"at 8 A.M. on Monday, March 4,1968, you were drinking coffee in a rear booth in the Sandwich Shop at the airport?" asked the district attorney.
" I was," answered McCarthy, the murder defendant.
"And you didn't see the man in the booth across the aisle---not five feet from you---stabbed to death!"
"NO, I was reading the local morning newspaper."
“ The cashier remembers you. You were in an awful hurry. You gave her a half-dollar in payment of a 15-cent check, and you didn’t wait for your change.”
“ I had to catch a plane.”
“You were aware of the time, but you didn’t notice the man in the next booth was dead---with a knife sticking out of his chest?”
“I might have seen him, but I never looked directly at him.”
“You didn’t hear him order eggs and coffee?”
“I might have. I don’t remember. I was busy reading the New York Stock Exchange Listings. I own some shares.”
“How long did that take you?”
“A couple of minutes. Then I read the market news. There was a long article forecasting steel prospects for next year. After I finished reading the article, I noticed the time. I had less than two minutes to catch my plane to Los Angeles.”
In the rear of the courtroom, Dr. Haledjian leaned over and whispered to Inspector Winters: “If he isn’t convicted of murder, he’ll draw a stiff sentence for perjury!”

How come?

注意：
at 8 A.M. on Monday, March 4,1968。。。。。。。reading the local morning newspaper。。reading the New York Stock Exchange Listings。
1968年，某个星期一早上8点钟。。。正在看报。。纽约股票交易所股票上市信息。
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在1968年，纽约股票交易所的工作时间是星期一到星期五。
星期二早上可以看到昨天，星期一的股票交易情况。
星期三早上可以看到昨天，星期二的股票交易情况。
星期四早上可以看到昨天，星期三的股票交易情况。
等等。
周五下午收市。周六，日关门。所以，星期一早上8点，在1968年，没有股票交易信息。
这就是疑点。犯罪嫌疑人当时在撒谎。