When is the New York Stock Exchange closed?

As a financial professional, I'm curious about the operational schedule of one of the world's most renowned stock exchanges. Could you please clarify when the New York Stock Exchange is closed? Specifically, I'm interested in knowing about its regular weekend closures, as well as any holidays or special occasions that might affect its trading hours. It's important for investors and traders to be aware of these closures in order to plan their strategies accordingly. Thank you for your assistance in clarifying this matter.