When is St. Patrick’s Day?

Why do we observe it?

Originally a Christian feast for Ireland’s patron saint, the day became a wider celebration of Irish culture in the United States.

Traditions and celebrations

Parades, Irish music and green attire are familiar traditions.

Planning tips

Check parade routes and transit changes in major cities.

Is it a federal holiday?

No. It is a widely observed occasion, but it is not a U.S. federal holiday. School and business schedules depend on local policies.

Is it a bank holiday? What’s open and closed

St. Patrick’s Day is not a federal holiday, so banks, the post office, the stock market and most government offices operate normally across the country. Individual banks, school districts and employers can still make their own call, so confirm directly if a closure affects an important errand or appointment.

The history behind the day

St. Patrick’s Day began as a religious feast day honoring St. Patrick, the patron saint credited with bringing Christianity to Ireland in the 5th century. Irish immigrants brought the observance to America, and the first known parade was held in New York City in 1762, more than a decade before the American Revolution.

The holiday grew into a broader celebration of Irish-American heritage over the 19th and 20th centuries, as large waves of Irish immigrants settled in cities like Boston, New York and Chicago and used the day to publicly celebrate their identity at a time when they faced significant discrimination.

How it’s marked across the country

Modern celebrations include parades in nearly every major U.S. city, the wearing of green, and Chicago’s tradition of dyeing the Chicago River green, which began in 1962. Corned beef and cabbage, though more of an Irish-American dish than a traditionally Irish one, remains a signature meal for the day.

One thing you might not know

The shamrock became associated with the holiday because St. Patrick is said to have used the three-leafed plant to explain the Christian Holy Trinity to pagan Ireland.

A cultural observance, not a public-office holiday

St. Patrick’s Day is widely celebrated but does not create a federal closure. Banks, mail, markets, government offices and most schools use their normal weekday schedules unless another local condition applies.

Major parades and festivals may close streets or change transit service, sometimes on a weekend rather than March 17. Check the organizer and transit agency before planning a route.

St. Patrick’s Day planning checklist

• Before the date: Confirm whether the local parade occurs on March 17 or a nearby weekend.
• Check locally: Review street closures, parking restrictions and transit changes.
• For travel: Book busy restaurants and events in advance.
• Final check: Do not assume schools, banks or government offices are closed.