An Irish friend, seeing the parallel, has renamed St. Patrick’s Day as “Cinco de Erin”.
Cinco de Mayo, “The Fifth of May”, is a pseudo-Mexican holiday which celebrates “El Día de la Batalla de Puebla” (The Day of the Battle of Puebla), and is almost entirely celebrated only in the US.
So why “Cinco de Erin?” Well, Erin means Ireland, and Fifth is the amount of whiskey someone might drink on the 17th of April.
“Cinco de Mayo, “The Fifth of May”, is a pseudo-Mexican holiday”
My friend from Mexico laughs about Cinco de Mayo celebrations in USA. She said it’s a big fat nothing in Mexico.