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Why is Saint Patrick’s Day on March 17?
March 17 is the feast day of Saint Patrick. The Library of Congress describes the holiday as commemorating the traditional date of his death, and the National Museum of Ireland identifies March 17 as the patron saint’s feast day. The date of his death is traditional, not a precisely established historical fact.
For many people, the day remains a religious observance honoring Ireland’s patron saint. The National Museum of Ireland notes customs including attending Mass, sharing a meal and raising a toast. The same day also serves as a celebration of Irish heritage and culture, so religious and cultural meanings coexist rather than compete.
How did it become a public celebration?
Public customs grew in different places and at different times. The National Museum of Ireland records temperance processions in the first half of the nineteenth century that developed into early carnival-style parades. Irish benevolent societies also organized parades in diaspora communities in Britain, America, Canada and Australia.
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New York’s parade began with Irish expatriates
The official history of the New York City St. Patrick’s Day Parade dates its first parade to March 17, 1762. It says the participants included Irish expatriates and Irish military members serving with the British Army. The parade gave them a public occasion to speak Irish, wear green, sing Irish songs and play Irish tunes. Irish fraternal and benevolent societies later took on organizing roles.
Ireland’s parade and festival traditions developed separately
Parade “firsts” depend on what is being counted. Ireland.ie dates the first parade in Ireland to Waterford in 1903. The National Museum of Ireland describes a Dublin parade showcasing Irish industry in the early 1950s; it dates the establishment of a St. Patrick’s Day Committee to 1995, followed by the development of a weekend festival. These milestones describe distinct stages, not one single origin for every parade or festival.
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What do shamrocks have to do with the day?
Wearing shamrock is a documented Saint Patrick’s Day custom. The familiar story that Patrick used a shamrock to explain the Christian Holy Trinity, however, is a relatively late tradition, according to the National Museum of Ireland; it should not be treated as a verified event in his life. Anyone marking the custom can wear shamrock or a shamrock pin, but the accessory is only one part of a holiday with religious and cultural traditions.
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Sources
- National Museum of Ireland, “St. Patrick”
- St. Patrick’s Day Parade, Inc., “History | The NYC St. Patricks Day Parade”
- U.S. Census Bureau, “Fun Facts: St. Patrick’s Day–March 17”
- Ireland.ie, “What is St Patrick’s Day?”
- Library of Congress, “Today in History – March 17”
- RTÉ, “The rise of the St Patrick’s Day Parade,” March 16, 2021
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