The president-elect is annoyed that flags will be half-staff for Jimmy Carter and angry that the Senate won’t have his Cabinet in place.

The federal holiday was first observed on January 20, 1986. There have been nine presidential inaugurations since then. Two have fallen on MLK Day: Bill Clinton’s second inauguration in 1997 and Barack Obama’s second inauguration in 2013 (which took place on January 21 because the 20th was a Sunday).

Donald Trump will be sworn in as president of the United States on Jan. 20, ushering in his second term in office and capping one of the most astounding political comebacks in American history. Inauguration Day is,