19. St. Patrick’s day Saint Patrick's Day is a cultural and religious holiday celebrated on 17 March in Dublin, Ireland.religious holiday Originally, the colour associated with Saint Patrick was blue. Over the years the colour green and its association with Saint Patrick's day grew.Green ribbons and shamrocks were worn in celebration of St Patrick's Day as early as the 17th centuryblueshamrocks

20. According to legend, Saint Patrick used the shamrock, a three-leaved plant, to explain the Holy Trinity to the pre-Christian Irish people. shamrockHoly TrinityshamrockHoly Trinity

21. A St Patrick's Day religious procession in Downpatrick Downpatrick

22. Girls playing Irish folk music during a St Patrick's Day parade in Dublin Irish folk musicIrish folk music