Saint Patrick's Day, or the Feast of Saint Patrick, is a religious and cultural holiday held on 17 March, the traditional death date of Saint Patrick, the foremost patron saint of Ireland.
Saint Patrick depicted in a stained-glass window at Saint Benin's Church in Kilbennen, near Tuam, in County Galway, Ireland
Traditional Saint Patrick's Day badges from the early 20th century, Museum of Country Life in County Mayo
According to legend, Saint Patrick used the three-leaved shamrock to explain the Holy Trinity to Irish pagans.
Sydney Opera House lit up green in honour of Saint Patrick in Sydney, Australia
A shamrock is a type of clover, used as a symbol of Ireland. The word shamrock comes from Irish seamróg, which is the diminutive of the Irish word seamair and simply means "young clover".
Saint Patrick's Day
…heritage and culture of the Irish in general. Celebrations generally involve public parades and festivals, céilithe, and the wearing of green attire or shamrocks. Christians who belong to liturgical denominations also attend church services. Historically, the Lenten restrictions on fasting and drinking alcohol…
White clover (Trifolium repens) and yellow wood sorrel (Oxalis stricta)
This flowering shamrock is a South American species of wood sorrel, Oxalis regnellii.