President's Day is Monday. Here's what to know about it's history, including how it got started and what it has become.

The shift from Washington’s Birthday to Presidents' Day began in the late 1960s, when Congress proposed the Uniform Monday Holiday Act.

Presidents’ Day once belonged to George Washington alone. The federal holiday, which is on Monday, has its roots in honoring the nation’s first president, according to history.com. Washington died in 1799,