See title, above.
Caid mille failte!
This day, March 17th, is now a national holiday in Ireland, celebrating the culture of the Irish people, complete with a week long festival held in Dublin (not Ohio) featuring parades, music, art, and plays.
The original idea behind St. Patrick's Day was to commemorate the life of said saint, the man who is credited with helping to firmly establish Christianity in Ireland. It was originally only a holy day for Irish Catholics.
March 17 was chosen as it was his date of death, in 461 A.D.
Note I said "A.D.", and not the ever-increasingly used "BCE", or, Before the Common Era, for those who despise religiosity in all its forms.
While there are certainly more revels leading up to the holiday than in the past in Ireland, there (fortunately) is no equivalent to the green beer driven Bacchanalia that has evolved here in the US.
Whether you are Irish by birth, ancestrally in part, or just like to wear green once a year, here's a hearty Happy St. Patrick's Day wish for you and yours!
And it is not St. Paddy's Day, either; many Irish consider "Paddy" to be stereotypical and untoward, although many Patricks are called Paddy.
Time for some Irish stew and soda bread!
Bushmills, Bailey's and Guinness are permitted, in moderation today.
Not certain why a certain university named for a French cathedral has taken Fighting Irish for the name of it's sports teams, however.