Eleven days a year, the federal government of the United States shuts its doors — but who decides which days? How the US federal holiday calendar is set each year involves Congress, the President and a little-known agency called the Office of Personnel Management. The process is part law, part tradition, and it has produced some fascinating history, including the newest federal holiday, Juneteenth.
Congress Writes the List Into Law
The foundation is federal statute: Congress has designated eleven permanent federal holidays in law. The list — New Year’s Day, Martin Luther King Jr.’s Birthday, Washington’s Birthday, Memorial Day, Juneteenth National Independence Day, Independence Day, Labor Day, Columbus Day, Veterans Day, Thanksgiving Day and Christmas Day — applies to federal employees and the District of Columbia by statute. Only Congress can add a permanent federal holiday, which is why the list changes so rarely: Juneteenth, added in 2021, was the first addition in nearly four decades. A bill to add a twelfth holiday would need to pass both houses and be signed by the President, just like any other law.
The President and OPM Handle the Details
While Congress sets the list, the Office of Personnel Management (OPM) publishes the actual calendar each year — the specific dates, including the observed days when a holiday falls on a weekend. Under federal rules, when a holiday falls on a Saturday, it is observed on the preceding Friday; when it falls on a Sunday, it is observed on the following Monday. That is why Independence Day in 2026 is observed on Friday 3 July (the 4th being a Saturday). The President can also declare one-time federal observances — such as a national day of mourning, which has occasionally closed federal offices — through executive order or proclamation.
How a New Holiday Gets Added: The Juneteenth Story
Juneteenth’s path shows the process in action. For decades it was observed in Texas (where it originated, marking 19 June 1865) and gradually adopted by other states, building grassroots and corporate momentum. Bipartisan legislation finally passed Congress in June 2021 and was signed into law, making 19 June the eleventh federal holiday — the first new one since Martin Luther King Jr. Day in 1983. The lesson: federal holidays are lagging indicators. They tend to formalise observances that states, businesses and communities have already embraced, rather than inventing new ones from scratch.
What the Federal Calendar Does and Doesn’t Control
A common misconception is that federal holidays are mandatory days off for everyone. They are not: the law covers federal employees, and by convention the Federal Reserve, the markets and many private employers follow suit — but private businesses are free to stay open, and many do. States set their own calendars on top (see our guide to state holidays), and there is no federal law requiring private employers to give any holiday off or pay a premium for working one. So the federal calendar is best understood as the nation’s official rhythm — influential, widely followed, but not the whole story of American days off.