Happy St. Patrick's Day

St. Patrick's Day is celebrated on March 17, his religious feast day and the anniversary of his death in the fifth century. The Irish have observed this day as a religious holiday for over a thousand years. On St. Patrick's Day, which falls during the Christian season of Lent, Irish families would traditionally attend church in the morning and celebrate in the afternoon.

In modern-day Ireland, St. Patrick's Day has traditionally remained a religious occasion. In fact, up until the 1970s, Irish laws mandated that pubs be closed on March 17. Beginning in 1995, however, the Irish government began a national campaign to use St. Patrick's Day as an opportunity to drive tourism and showcase Ireland to the rest of the world. Last year, close to one million people took part in Ireland 's St. Patrick's Festival in Dublin, a multi-day celebration featuring parades, concerts, outdoor theater productions and fireworks shows.

Today, St. Patrick's Day is celebrated by people of all backgrounds in the United States, Canada and Australia. Although North America is home to the largest productions, St. Patrick's Day has been celebrated in other locations far from Ireland, including Japan, Singapore and Russia.

Chicago is famous for a somewhat peculiar annual event: dyeing the Chicago River green. The tradition started in 1962, when city pollution-control workers used dyes to trace illegal sewage discharges and realized that the green dye might provide a unique way to celebrate the holiday. That year, they released 100 pounds of green vegetable dye into the river—enough to keep it green for a week!

The first St. Patrick's Day parade took place not in Ireland but in the United States. Irish soldiers serving in the English military marched through New York City on March 17, 1762. Along with their music, the parade helped the soldiers reconnect with their Irish roots, as well as fellow Irishmen serving in the English army.

Now each year in New York City nearly three million people line the 1.5-mile parade route to watch the procession, which takes more than five hours. Boston, Chicago, Philadelphia and Savannah also celebrate the day with parades involving between 10,000 and 20,000 participants.