How long has st.Patricks day been celebrated?

St. Patrick's Day has been celebrated for over a thousand years, with its origins tracing back to the 9th or 10th century. Initially observed as a religious feast day commemorating St. Patrick, the patron saint of Ireland, it became an official public holiday in Ireland in 1903. The day has evolved into a global celebration of Irish culture, marked by parades, music, and festivities.