With green and glee, Savannah, other major US city parades mark St. Patrick's Day — a little early

FILE - Kelsey Goran of Kennesaw, Ga., left, kisses a sailor from the USS Alaska as he marches in the 194-year-old Savannah St. Patrick's Day parade, March 17, 2018, during the St. Patrick's Day parade in Savannah, Ga. Savannah, Georgia's oldest city, is planning a supersized celebration as it marks the 200th anniversary of its beloved St. Patrick's Day parade. City Manager Jay Melder says he's expecting historic crowds for the Irish-themed parade Saturday, March 16, 2024. (AP Photo/Stephen B. Morton, file)

People across the United States celebrated Irish heritage at several major St. Patrick’s Day parades Saturday, marking the holiday a day early at events that included a big anniversary in Savannah, Georgia, and honored a pioneering female business leader as grand marshal in New York.

The holiday commemorates Ireland’s patron saint and was popularized largely by Irish Catholic immigrants. While St. Patrick’s Day falls on March 17, some parades were moved up from Sunday, a day of worship for the Christian faithful.

Manhattan’s St. Patrick’s Day Parade, which dates to 1762 — 14 years before the U.S. Declaration of Independence — is one of the world’s largest Irish heritage festivities.