Saint Patrick day's

[b][u]Saint Patrick :
was a Roman Britain-born Christian missionary and is the patron saint of Ireland along with Brigid of Kildare and Columba. When he was about sixteen he was captured by Irish raiders and taken as a slave to Ireland, where he lived for six years before escaping and returning to his family. He entered the church, as his father and grandfather had before him, becoming a deacon and a bishop. He later returned to Ireland as a missionary in the north and west of the island, but little is known about the places where he worked and no link can be made between Patrick and any church. By the eighth century he had become the patron saint of Ireland. The Irish monastery system evolved after the time of Patrick and the Irish church did not develop the diocesan model that Patrick and the other early missionaries had tried to establish.
http://upload.wikimedia.org/wikipedia/en/2/2f/Stpatrick.jpg

[/b][u]St. Patrick's Day :
is an annual feast day which celebrates Saint Patrick.
The day is the national holiday of Ireland. It is a bank holiday in Northern Ireland and a public holiday in the Republic of Ireland, Montserrat, and the Canadian province of Newfoundland and Labrador. In the rest of Canada, the United Kingdom, Australia, the United States and New Zealand, it is widely celebrated but is not an official holiday. [1]

It became a feast day in the Roman Catholic Church due to the influence of the Waterford-born Franciscan scholar Luke Wadding[2] in the early part of the 17th century, and is a holy day of obligation for Roman Catholics in Ireland. The date of the feast is occasionally, yet controversially, moved by church authorities when March 17 falls during Holy Week; this happened in 1940 when Saint Patrick's Day was observed on April 3 in order to avoid it coinciding with Palm Sunday, and happened again in 2008, having been observed on 14 March.[3] March 17 will not fall during Holy Week again until 2160.[4]
http://search.ke.voila.fr/S/orange?rtype=kw&profil=smart_box&bhv=askimage&kw=+&profil=orange&rdata=st+patrick+days#

some pictures of st patrick's day
http://search.ke.voila.fr/S/orange?rtype=kw&profil=orange&bhv=images&rdata=st+patrick+days&ap=7&logid=0104700000120603587597528&an=16&askiap=7&prevnbans=16#

http://search.ke.voila.fr/S/orange?rtype=kw&profil=orange&bhv=images&rdata=st+patrick+days&ap=6&logid=0104700000120603587597528&an=16&askiap=6&prevnbans=16#

http://search.ke.voila.fr/S/orange?rtype=kw&profil=orange&bhv=images&rdata=st+patrick+days&ap=6&logid=0104700000120603587597528&an=16&askiap=6&prevnbans=16#

[edit] Wearing of the green
St. Patrick's Blue, not green, was the colour long-associated with St. Patrick. Green, the colour most widely associated with Ireland, with Irish people, and with St. Patrick's Day in modern times, may have gained its prominence through the phrase "the wearing of the green" meaning to wear a shamrock on one's clothing. At many times in Irish history, to do so was seen as a sign of Irish nationalism or loyalty to the Roman Catholic faith. St. Patrick used the shamrock, a three-leaved plant, to explain the Holy Trinity to the pre-Christian Irish. The wearing of and display of shamrocks and shamrock-inspired designs have become a ubiquitous feature of the saint's holiday.[5] The change to Ireland's association with green rather than blue probably began around the 1750s.[6][7]

http://upload.wikimedia.org/wikipedia/commons/0/0c/Irish_clover.jpg