When is the next New York Stock Exchange holiday?

Excuse me, I was wondering if you could provide some information regarding the upcoming holiday schedule for the New York Stock Exchange. Specifically, I'm interested in knowing when the next one will be. Is there a specific date that has been announced, or is it still to be determined? Additionally, could you possibly elaborate on any potential changes to the usual holiday calendar that investors should be aware of? Thank you for your time and assistance.