Inauguration Day and Martin Luther King Jr. Day collide Monday in a rare occurrence. The big picture: Stock markets, banks, many schools and the U.S. Postal Service are closed for the federal holiday,

Here’s a look at what’s open and what’s closed on MLK Day 2024: Post office – Closed. No mail will be delivered on Jan. 20th. Post offices will be closed. National parks -Open with free admission on MLK Day.