This context comes from the book "Black Rednecks And White Liberals" by Thomas Sowell
"Early Lebanese businesses in the United States were noted for “opening 16 to 18 hours daily,” utilizing “the assistance of the whole family."During the earlier rise of Chinese shopkeepers in Southeast Asia, sixteen-to-eighteen hour days were also common""
The word "opening" is confusing to me as I know that "open" means:
c. To begin business or operation: The store opens early on Saturday.(source thefreedictionary)
...so if the Lebanese businesses were noted for "opening" for me this means they were noted only for the hour they began their operation and not for when they were closing, but the sentence states both. Why? Is it just sloppy English?