St. Patrick’s Day: How a religious feast became a worldwide celebration of Irish culture

Historically, the color associated with Saint Patrick was actually Saint Patrick's Blue. Green only became the dominant color during the 1798 Irish Rebellion, when the shamrock became a symbol of nationalism.

Written by Aanya Mehta

March 16, 2026 15:00 IST

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Observed annually on March 17, Saint Patrick’s Day serves as a tribute to the life and enduring legacy of Ireland’s patron saint. What originated in the 17th century as a solemn religious feast has since evolved into a vibrant global phenomenon. Today, the holiday transcends its ecclesiastical roots, manifesting as a worldwide celebration of Irish heritage defined by spirited parades, traditional folk music, and the unmistakable, verdant hue that blankets cities across the globe. (Source: Photo by wikimedia commons )

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Who Was Saint Patrick? Saint Patrick was a 5th century missionary credited with bringing Christianity to Ireland. According to legend, he used the Shamrock to explain the concept of the Holy Trinity. (Source: Photo by wikimedia commons )

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Why Is It Celebrated on March 17? The date marks the traditional death anniversary of Saint Patrick in the 5th century. Over time, March 17 became a day to honour Irish heritage and celebrate the country’s cultural traditions. (Source: Photo by wikimedia commons )

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Traditional Food and Drinks: Classic dishes associated with the holiday include Corned Beef and Cabbage and Irish Soda Bread. Many celebrations also feature Irish music, dancing, and festive gatherings. (wikimedia commons) (Source: Photo by wikimedia commons )

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Why Green Is the Official Colour? Green is strongly associated with Ireland because of its lush landscapes and national symbolism. On St. Patrick’s Day, people often wear green clothing and decorate cities with green lights and flags. (Source: Photo by wikimedia commons )

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Famous St. Patrick’s Day Parades: Major parades take place around the world, especially in Dublin, New York City, and Chicago. Chicago even dyes its river green as part of the celebrations. (Source: Photo by wikimedia commons )

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It is celebrated worldwide: Although it started in Ireland, St. Patrick’s Day is now celebrated across the globe, from United States and Canada to Australia, thanks to Irish diaspora communities and the global popularity of Irish culture. (Source: Photo by wikimedia commons )