St Patrick’s Day, a set on Flickr.
Via Flickr:
Saint Patrick’s Day (Irish: Lá ’le Pádraig or Lá Fhéile Pádraig), colloquially St. Paddy’s Day or simply Paddy’s Day, is an annual feast day which celebrates Saint Patrick (circa AD 385–461), the most commonly recognised of the patron saints of Ireland, and is generally celebrated on 17th of March.Chicago dyes its river green and has done so since 1961 when sewer workers used green dye to check for sewer discharges and got the idea to turn the river green for St. Patrick’s Day.