Monday will be an especially noteworthy day on America’s calendar — and it’s one that will be marked by various closings, including that of financial markets. For starters, it’s Martin Luther King Jr.

Indexes closed lower on Thursday, with the tech-heavy Nasdaq falling almost 1%, led by a slide in mega-cap tech stocks like Apple and Nvidia.

As the nation pauses to remember Dr. Martin Luther King, Jr. and his legacy to the United States, the stock markets in the country will close for the day. The New York Stock Exchange will close for a long weekend after normal trading hours on Friday,

Here's what you need to know about whether U.S. stock markets will be open on Martin Luther King Jr., Day this year.

Martin Luther King Jr. Day is a federal holiday, so some businesses will be closed in Massachusetts. Here's what you need to know.